26 7

antic2 subcanaliculatd; labio antick callo terminato; labro dila- tato, extus incrassato, marginejlexuoso.

Hab. Isle of Capul, Philippines.

16. RISSOINA CCELATA, A. Adams. R. testd subulato-turritd, albidd, solidd; anfractibus octo, convexiusculis, supremis cla- thratis, ultimo cinyulis elevatis, cequalibus, subdistantibus, transversis, interstitiis lineis elevatis, longitudinalibus e t trans- versis, decussatinz ornato ; aperturd semieUipticd, antic2 sub- canalieulatd; labio calloso ; labro antic2 dilatato, margine in- crassato, subrejlexo.

Mus. Cuming.

Hab. Siquijor. Mus. Cuming.

The two following species are true Rissoa, characterized by the simple aperture, which is not channeled in front, aud by the absence of the calcareous appendage to the operculum. Many species of small shells have been inaccurately referred to Rissoa, some of which belong, however, to entirely different families.

R i s s o A BELLA, A. Adams. R. testa" turrito-subulatd, alhd, solidd; anfractihus quinque, planiusculis ; spird apice obtuso, lineis transversis, elevatis, concentricis, confer tis, ornatd ; aperturd ovali, antic2 integrd; labio subcalloso ; labro sub- dilatato, extus marginato, margine jlexuoso.

Hab. Philippine islands. Mus. Cuming.

RISSOA ELEGANS, A. Adams. R. testd subulato-turritd, albil, sem+ellucidd; anfractibus 7, convexiusculis; suturd canalicu- Eatd, lineis elevatis transversis concentricis et longitudinalibus concinn2 decussata"; aperturd ovali, sUbprOdUCta, antic2 inte- grd; lahio calloso; labro antic2 dilatato, extus varicoso, mar- gine acuto, subrejexo.

Hab. Philippines. Mus. Cuming.

2 . DESCRIPTIONS OF SEVERAL NEW SPECIES OF MUREX, RIS- SOINA, PLANAXIS, AND EULIMA, FROM THE CUMINGIAN COLLECTION. BY ARTHUR ADAMS, F.L.S. ETC.

1. MUREX IOSTOMUS, A. Adams. M. testd ovato-fusiformi; spira" acuminatd; anfractibus planulatis, squamulosis, spinis acutis, in serie elevato disposito ornatis, cinered; anfractu ul- timo spinis elevatis, bz>dis, in seriebus quatuor dispositis in- structo, varicibus sex, longitudinalibus ; aperturd ova fo-oblongd, intus aiolaced; labio subtuherculari; labrojmbriato.

Hab. Philippines. Mus. Cuming.

2. MUREX s o L i m s , A. Adams. M. testd solidd, profund2 um- bilicatd, albd; spird brevi, obtusd; anfractibus planulatis, lon- gitudinaliter plicato-varicosis (varicibus in anfractu ultimo 7), transversim liratis ; &is, ad plicas, incrassatis, interstitiis lon-

368

y i f udinaliter cancellatis ; aper turd subrotundati?; canali recto, aperturnna crqitan te ; labro sitnplici, intais Iavi.

H u b . Ichiboc, West Africa.

3. MUREX,EURACANTHUS, A. Adams.

Mus. Cuniing.

M. testd oijato-fusiformi, urnbilicatii; spird acuminatd; anfractibus planis, serie tuber- culorum spin~~orit i iui~i i n medio dorsi, albtf, spinis e t par-te an- ticti rubro tincfis ; anfractu ultimo lirzs squamulosis, e t spinis tubulosis, longis, in seriebus duobus dispositis, ornafo ; aper- turd oantd, obloiiyd; labia antic2 product0 et tuberczilato ; ca- nali brwi, sirbrecurrc?.

Hab. -1 Mus. Ciiming. Figured by Mr. Reeve as M. noduli@cs, which is wry different

4. MunEx EXASPERATITS, A. Adams. M . t e s t d oiwto-&(forrrii, urnbilicatii, albd, nitidd; spiri? acuminatci; anfractibus angtr- latis, in wiedio lonyitudinaliter plicato-raricosd, fransversim (irntif ; liiiv su6spinulosis ad plicas; aperturd ovafii; canali mediocri, subincurtwfo ; labro intus sulcato.

from the preseiit species.

n a b . -7 . Mus. Cuming.

5 . M ~ I R E X LIGNARIUS, A. Adams. M . test& ovnto-fusiformi, subumbilicatii'; spircf acuminatd, rufo-fiiscc?; anfractibus su- perni excavatis, i n medio liris duabus, elevafis, nodulosis ; trans- versirn liratri, liris elevatis rugulosis, inaqualibus, longitudi- nali fer trivaricosri, varicibuu, in medio, spinis duabus, elevapis, jimbriatis ; aperturd ovato-rotundatd, intus albil; canali aper- turain c r p a n t e , subrecurvato.

Hab. W e s t Africa. Mus. Cuming.

6. MUREX FUSIFORMIS, A. Adams. .&l.testd fusiformi, cinere&, fulvo varieyatii ,- spircf productci; anfractibus rotundis ; vari- cibus longitudinalibus, subelevatis, nodospinosis, et lineis ele- vatis, traiisversis, lot2 clathratd; aperturil oblongo-ovatri; ca- nali aperturam crpuante, recto ; labro extus varicoso, intus sul- cato.

Hab. Africa. Mns. Cuming.

7 . MUREX SPisosus, A. Adams. M . testd ovatd, urnbilicath', albil, lineis rufo-fuscis traiisversis ornatd; anfractibus rotundis, transversim liratc?; vuricibus longitudinalibus reyularihus (6 in. anfractu ultimo), spinis longis, rectis, acutis, armatis ; canali subrecurunto, aperturam aquante ; uperturil ovato-rotundatd.

Hnb. - ? Mus. Cuming.

8. MUREX SEROTINUS, A. Adams. ill. test; oanfo-fusiformi ; spirci peracu fti, serotinci, longitudinaliter pliea td, transversina Iiratd; h i s , ad plicas, noclulosis ; aperfurtf ovatd, ohlongd; Iabio antic2 bihtberculnto ; labro extus incrnssato, maryine den- tato, ititus lirato ; canali m ~ d i o c r i , subrecturiwfo.

Ifah. -- ? Miis. Corning.

2GY

9. MUREX BIFASCIATUS, A. Adams. M. testa ventricosd, pro- fund2 umbilicatd; spird brevi; anft-actibus rotundatis; albd; anfractu ultimo fasciis duabus, latis, rufo-fuscis ornuto, trans- aersim elevatt? liratd, liris rugosis ; Eongitudinaliter varicibus q u a l i b u s (iri anfractu ultimo 9) subeleva tis, rotundatis,Jmbria- ti8 ; aperturd ovato-rotundatd ; labio subprodueto, fu lvo ; canali upcrturd breviore, ealde recurvato.

Hub. Senegal. Mus. Cuming.

10. MUREX CRASSUS, A. Adams. 31. testd ovato-fusiformi, umbi- licatd, solidd, fu lvd; spird mediocri ; a~Efractibus rotundatis, supernk angulatis, obsoletk transversim liratcf, varicihus crassis, distantibus, irregularibus (4 in ultimo anfractu), ornatd; aper- turd ovatd, intus violaced; labro extus incrassato, intus deiz- tato.

Hab. China. Mus. Cuming.

11. MUREX PAGODUS, A. Adams. M. testd ovato-fusiformi; spird acuminatd, Iavi, albd, antic? maculis fuscis sparsim p ie td ; anfractibus sep tem, concazis, seriebus spinarum ornatis, spinis regularibus, tubulosis, recurvatis, marginibus $mbiiatis ; aper- turd subrotundatd; columelld lrevi; canali recuraato, ad dextram inclinato, aperturam cequante.

Eab. -.- ? Mus. Cuming.

12. MUREH EXCAVATUS, A. Adams. 31. testii ovafo-fusifonni, subumbilicat2, albd, solidd; spird acurninatd ; aqfractibus con- caais (quasi excaaatis) ad partem anticam ; in medio angulatis, longitudinaliter plicatd, transversim liratd, liris ud plicas no- dulosis ; anfractu ultimo liris duabus elevatis ornato ; aperturrl semiovali; canali mediocri, vix recto ; labro intus sulcato.

Hab. -? Mus. Cuming.

13. MUREX IivoRivmus, A. Adams. M. testa fustyormi, v d d e unibilicatd ; spird ucumincctd ; anfrrrctibus rotundis, albidd, liris transuersis, elevakis, squamulosis, et nai-icibus Eongitudiiaalibus, rotundatis (in anfractu ultimo i), ornatd; aperturd oaali; camli subrecurvato, aperturain cepuante; labro extus jmbriato, iiitus lirato.

IIab. -7 Mus. Cuming.

14. MUREX OBELiscus, A. Aclams. 1cf testd ovato-pyramidali, subtrigondi ; spird efevatd; anfiuctibus planis, apice obtuso, afbd, seriebus transversis macularum, rufo-ftzcscarum orizatii, trnasversim Piratd, liris subgranosis, vnricibus tribns, lonyit26- dinufibus, varice intermedio, brevi, triangvlari, ,ad partem 110- sticam instructd; aperturd oaatd; canali aalde recuruato.

Hab. - ? Mus. Cuming. 15. MUREX LYRATUS, A. Adams. 31. testd oaato-fusiformi, sub-

wnbilicatd; spirci acuminatil; nnfrncfibus planiuscwlis, ulhd, rwricibus riifo-j~scis ornafri, trnnsaersim liratd; [iris trans-

2 70

versis, angustis, asperulatis, varicibus longitudinalibw, rotun- datis, subjmbriatis (7 in ultimo anfractu) ; aperturd subrotun- datd, intus albd; columelld postict? callosd ; canali brevi, recto, vix clauso; labro intus lirato.

Hab. - ? Mus. Cuming. 16. MUREX PULcnER, A. Adams. M. testd ovato-fusiforrni,

subtTigonali; spird acuminatd; anfractibus rotundatis, nodu- /osis, varicibus tribus subspinosis ; liris transversis, elevatis, alzfractu ultimo varicibus prominentibus, subspinosis, ornato ; varicibus anticBjmbt*iatis et spinosis ; aperturd ovato-rotzmdd; Zaljio tuberczilato ; labro intus crenato-lirato, canali perlongo, subrecurvo, vix clauso.

Hab. St. Croix, 60 fathoms ; M , Sueuson.

17. MUREX SINGAPORENSIS, A. Adams. Mus. Cuming. M. testd ovato- fusG

forrni ; spird acuminatd; anf+actibus rotundatis ; f u h d , longi- tudinaliter plicatd, plicis rotundis, transversim liratd, liris asperulatis, squnmulis aculeatis oh i t i s ; aperturd ovatd, oblonyd, intus lividd; canali aperturam cequante, subrejexo ; labro intus dentato.

Hab. Singapore. Mus. Cuming. 18. MUREX NIVEUS, A. Adams. ' M. testa" ovatd, umljilicatd,

nived; spird btevi, acuminatd; anfractibus rotundatis ; longi- tudinaliter plicatd, plicis rotundis, prominentibus, crassia (8-10 in anfractu ultimo), transversim liratd, liris spuamulis, confertis, longitudinalibus, obsitis ; aperturd ovatd, oblongd; canali brevi, subrectd; labro intus lirato.

Hab. - ? Mus. Cuming.

19. MUREX CUMINGII, A. Adams. M. testd oblongo-jusijormi, triuuricosd ; spird subproductd, anfractibus rotundatis, pallid2 rufo-fuscd, fasciis tribus, transversis, ruf 0- fuscis, ornatd ; vari- cibus longitudinalibus, tribus, continuis, obtusis, liris intermediis nodosis, liris transversis inaqualibus, rufo-fusco articulatis, in- structd ; aperturd ovali, labro intus crenato-lirato extus fimbriato, jimbriis non spuamulosis, canali clauso, antick recurvato.

Hab. Philippines. Mus. Cuming. Somewhat closply allied to M . triquetra of Born.

20. MITRA MARXTESANA, A. Adams. M . testd ovato fusiformi, anfractibus planis, spirb acutb, carneold, maculis albis et lineis un- dulatis, longitudinalibus rufo-juscis, eleganter pictb, longitudinali- ter substriatd, transversim liratd, interstitiis valde punctatis ; aperturb spiram majorem quante , columeJld plicis quinpue in- structd, labro maryine crenato.

Hab. Marquesas. Mus. Cuming. Markings very similar t o those of M. serpentina, Lamk. The

Mitra figured in Mr. Reeve's Monograph, as M. nehulosa of Swain- son, is quite different from that species, and requires therefore a change of name ; I have called it 111. p r o l ~ i i ~ p ~ .

27 1

21. a4NCILLARIA LINEOLATA, A. Adams. A . testd ovato-fusi- formi; spird brevi, subacutd, suturis albis, pallid2 fulvd, lineis longitudinalibus, confertis, fuscis, ornatd; anfractu ultimo cinyuli elevatd transuersd, ad maryinem labri, in dente acuto desinente ; aperturd oblonyd ; columelld tortuosd, albd, antic? plicis oblipuis instructd.

f lab . -? Mus. Cuming. A very pretty species, distinguished by the fine longitudinal brown

22. PLANAXIS OBSCURA, A. Adams. P . testd ovato-conicd, epi- dermide fusco obtectd; fusco-rufescente; anfractibus planis, suturd distinct&, transversim valde sulcatd, interstitiis longitudinaliter striatis ; aperturd ovato-oblongd, columelld longitudinaliter sul- ca td; labro subdilatato, maryine acuto, intus valde lirato.

lines.

Hab. -? Mus. Cuming.

23. PLANAXIS FULVA, A. Adams. P. testd ovato-conicd, fulvd ; spird acuminatd, apice acuto, anfractibus planis, ultimo angulato, transversim teniriter striatd; aperturd ovato-oblonyd; columelld incurvatd, antic? callosd ; labro margine subdilatato, e d u s in- crassato, intus lirato.

Hub. Swan River. Mus. Cuming. Allied to P. mollis, Sowerby, but the last whorl is anplated.

24. PLANAXIS ZONATA, A. Adams. P. testd ovato-conicd, rimatd, glabrd, nitidd ; spird acuminatd ; anfractibus convexiusculis, pal- lid2 lutescente, zonula" transversd rufo-fuscd cinctd ad suturas, et, in anfractu ultimo, fasciis duabus transversis ornatd, transversim tenuissim? striatd ; aperturd ovatci ; coluinelld incurvati ; labro subdilatato, intus lirato.

Hub. Calapan, Philippines. Mus. Cuming.

25. PLANAXIS CINGULATA, A. Adams. P . testa" ovato-conicd, solidif, rimatd ; spird acutci ; anfractibus convexiusculis, fulvd, zonulis rufo-fuscis transversis, p o p e suturas, duplicatis, ornatii', longitudinaliter tenuissim? striatd, transversim valde sulcatd ; aper- turd ovato-oblongd, coarctatd ; columelld incurvatd; labro extus incrnssato, intus dentato-lirato.

Hub. China Seas. Mus. Cuming. Species collected by me during the voyage of H.M.S. Samarang.

2G. PLANAXIS s u c c i N c T A , A. Adams. P . testd ovnto-conic$, spird acuminatd, apice acuto, anfractibus convexiusculis, pallid; fuse&, fasciis linearibus, transversis, multis, rufo#uscis, ornatd, longitudinaliter substriatd ; anfractu ultimo transversim sul- cato ; aperturd ovato-oblonyd; columelld fuscd; labro intus sul- cato.

Hnb. Peru, and the West Indies. Allied to P. Iineata of Montagu, but of larger growth and different

Mus. Cuming.

form.

2 i 2

27. PLANAXIS BUCCINEA, A. Adams. P. testa ouatd; s p i d breui, acutd, apice obtuso, rubro ; anfractibus planis, plicato-gra- nulosis; nigro-fused, cingillis articulatis, transversis, ornatd ; longitudinaliter substriatn“, transversim valde sulcutd ; aperturd ovato-oblongd ; columelld excavatd; labro intus creno-pla’cato, extus incrassato, varicoso.

Hab..West Indies. Mus. Cuming. 28. PLANAXIS LABIOSA, 9. Adams. P. test& ovato-conicd,

spird acuta, anfractibus convexiusculis, atro-purpured, fasciis pallidis (5-6) transversis, in anfractu ultimo; transversim striatd; aperturd ovato-oblong&; columelld incurvatd et dilutatd ; labro dilatato, margine rejlexo et incrussato, intus lirato.

Hub. Sandwich Islands. Mus. Cuming. 29. LAGENA CALIFORNICA, A. Adams. L. testa solida, ouato-

fusiformi ; spird, in medio, tumidd, anfractibus pJaniusculis, in- fern2 nodospinosis, albd, cingulis transversis, eleuatis, rufo-fuscis articulatis ornatd, interstitiis obscuris, fuscis ; anfractu ultimo longitudin_aliter plicato, seriebus duobus tuberculorum subspinoso- rum instructo ; aperturd ovato-oblongd ; columelld carneold, plicis quatuor, albis, obliquis ; labro intus lirato.

Hub. California. Mus. Cuming. Allied to L. picta, Lamk., but of different form and markings. 30. NASSA AUSTRALIS, A. Adams. N. test& ovato-fusiformi ;

spird acuminatd, pallid2 olivacecf, fasciis tribus, transversis, fuscis, ornatd, longitudinaliter valde plicatti, interstitiis valde transversim sulcatis ; anfractu ultimo antic2 liris iransversis subgranosis, postic?, prope suturam, tuberculis moniliformibus ornato ; aper- turd ovato-rotundatd, intus fused, et dentato-liratd; labro margine albo, posticP valge injlexo et dmtato.

Hub. Australia. Mus. Cuming.

November 25, 1851.

W. J. Broderip, Esq., F.R.S., Vice-president, in the Chair.

The following papers were read :-

1. ON A SPECIES OF BQUOREA INHABITING THE BRITISH SEAS. BY PROF. EDWARD FORBES, F.R.S.

(Radiata, P1. IV.) I n the first volume of the ‘ Wernerian Memoirs ’ a ‘‘ Medusa &quo-

rea” is mentioned by Prof. Jameson as an inhabitant of the seas of the north of Scotland, and in the ‘History of British Animals’ by Dr. Fleming, the name “Geryonia aquorea” is used to designate it. As no