L U CI N A . 



Species 41. (Mus. C 



LrciNA LEUCOMA. Liic. h's/d (ir///ni/n)-/, plaiiicdin-e.rd, 



aiUici mperficiaUter exrnmtd. liiinilii uliliuiiii!, jiarrd. 



mibprofumld, concentricP /i/iri.s iiicrrmi'iiH nu/i" iiidaid ■ 



opaco-albd, guasi erosd. 

 Jwv. ULKACHED LuciNA. Shell orbicular, flatly convex, 



superficially excavated on the anterior side, witli 1 he 



lunulc oblong, small, and rather deep, concentrically 



rudely marked with lines of f;-rowth ; opake «liile, 



as if eroded. 

 TiiirroN, Conch. Dythyra Brit. p. 113. pi. 7,f. K. 



Tcllhia htctea, Pulteney. 



I.iiriiin hirlea, Lamarck. 



l.iirnui .luijiliidrsiiiiokles, Dcshayes. 



Jniidiidi-sniii LiirhiriUa, Lamarck. 



LurijKS tacleu, Fleming. 

 Ilab. Mediterraneau and the British Islands (from shallow 



water to a depth of eighty fathoms) ; Forbes and 



llanley. 



The deep internal position of the ligament of this 

 well-known species, induced Lamarck to place it in tlic 

 s;enns .linphidesiiia. 



Species 42. (Mus. Cumnig.) 

 l.ucuNA oBLmUA. Ltic. tesld suborbicidcin, aidicc oblique 

 inclinatd, soUdiuscidd, stnis conceiiiricis et radiaidibii.s 

 iindique creberrime deciissaid, cardhie denlibus duabiis 

 parvis ci'iifraUbus et duabiis brevibus ereciis siibd'us- 

 taiilibun lidiTcdibus hi idi'dqiw vnhd ; albidd. 

 The oBLitiuE Lucina. Shell nearly orbicular, anteriorly 

 obli(iucly inclined, rather solid, very closely decus- 

 sated throughout with radiating and concentric stria% 

 hinge with two small central teeth and two rather 

 distant .short erect lateral teeth in each valve ; whitish. 

 l[nh. Uhusan ; H. Benson. 



The decussated sculpture of this oblicpiely inclined 

 .species is very close and obtuse ; and the hinge is charac- 

 terized in each valve by two widely separated erect lateral 

 teeth. 



Species 43. (Mus. Cuming.) 



Lucina Janeibensis. Luc testd subquadmio-orbicnlari, 



(iibbosd,tHiiiidd, conceidrice rude striutd ; (dbidd. 



J une, 



The Janeiko Lucina. Shell somewhat squarely orbi- 

 cular, gibbous, swollen, concentrically rudely striated ; 

 whitish. 



Ilab. llio Janeiro. 



A gibbous shell of very simple character, witliout auv 

 lunule. 



Species 44. (Mus. Cuming.) 



Lucina ochuacea. Luc. testa orliicutari, couwxd, sub- 

 Pect'miformi, ad latera mperficiaUter excavatd, radia- 

 tim creberrimc temdliratd, tiris ad latera distaidiuribuis, 

 coiiceidrke subtilis.sime lam'matd ; opaco-tnted. 



Tile yellow Lucina. Shell orbicular, convex, some- 

 what Pecten-shaped, sujjerficially excavated at tlu- 

 sides, radiately very closely finely ridged, ridges more 

 distant at the sides, concentrically very finely lami- 

 nated ; opake yellow. 



IJab. ? 



This species is stained within and without with a 

 jieeuliar opake yellow, which has the appearance of having 

 been applied artificially, but that I have seen other speci- 

 mens, besides the one figured, similarly coloui'ed. 



Species 45. (Mus. Cuming.) 



Lucina scabra. Luc. testd orbiculari, convctd, sub- 

 Pecliniformi, ad latera subexcamtd, radiaiim lenid- 

 liratd, lirk alternatim majoribus, nndique imbricato- 

 squamatis, lunula elongato-cordatd, subprofunde im- 

 pressd ; semipellucido-albd. 



The hough Lucina. Shell orbicular, convex, somewhat 

 Pecten-shaped, slightly excavated at the sides, ra- 

 diately finely ridged, ridges alternately larger, imbri- 

 cately squamate throughout, lunule elongately cordate, 

 rather deeply impressed ; semitransparent white. 



LAMAiicK,Amm. sans vert. (Deshayes' edit.) vol. vi. p. 227. 



Ilab. Bay of Mexico. 



The radiating ridges of this species are characterized 



throughout with scales, after the manner of Lima squamosa. 



after the man 

 and diff'er from those of tln^ followi 

 centric sculpture. 



hav 



