510 Zoological Society. 



chology,' accompanied by the following erroneous statements : first, 

 that it is C. biradiatum of Brug. ; and second, that C. biradiatum of 

 Brug. is only a vaidety of the Bi-itish species (C. serratum), which is 

 improperly named C. lavigutum by him and some other authors. 

 From the apex to the ventral margin, it measures longer in propor- 

 tion than any other species. 



Cardium Elenense, Conch. Illustr. f. 58. Card, testa lenui, Icevi, 

 ovali, postice siihacuminatd pallide fulvd, fusco et purjmreo mi- 

 nute maculatd, intus funcd rubro fasciatd ; umhonibus inconsjn- 

 cuis, purpureo maculatis. 

 Long. 0-75 ; lat. 0-50; alt. 0*75 poll. 

 Hab. ad Sanctam Elenam. H. Cuming legit. 

 Very nearly resembling C. BrasUianum, but not coloured in radi- 

 ating lines, as in that species, and not so much elongated at the 

 posterior ventral margin. Found in sandy mud, at seven fathoms. 



Cakdium lyratum. Conch. Illustr. f. 40. Card, testd ventricosd, 

 rotnndatd, subcequilaterali, pallide fulvd, epidennide rubro-pur- 

 pured indutd, intiis aured ; antice decussatim j)licatd ; costis 

 numerosis ; anticis tenuissimis ; mediis validioribus ; posteriori- 

 bus distantibus, angulatis. 



Long. 1-70; lat. 1-40; alt. 1-70 poll. 



Hab. Dumaguete, ins. Negroes, Philippinarum. 



The C. jEolicum of Born (C. pectinatum, Linn., according to Brug.) 

 has a space on the posterior side of the shell entirely free from ribs 

 in either direction. Brugui^re describes it as characterised by "trois 

 faces diotinctes," of which the first {the posterior) is " lisse, sans cotes 

 hi stries," and the figures in Chemnitz represent the same peculia- 

 rity. In the shell before us, the whole of the posterior side is covered 

 with radiating ribs, no space being left smooth. In other respects 

 it exactly resembles the " Janus " celebrated by ancient naturalists, 

 and it is now almost as frequently met with in cabinets. The dif- 

 ference between the two species has been long observed, although 

 they have not hitherto been separately described. Mr. Cuming has 

 taken specimens of this sj^ecies in sandy mud, at the depth of seven- 

 teen fathoms. 



Cardium parvum. Conch. Illustr. f. 33. Card, testd ovali, subqua- 

 dratd, postice subangulatd, antice rotundatd, pallide fulvd, fusco 

 rubescente angulatim maculatd ; costis numerosis, subplanulatis ; 

 sulcis angustis. 



Long. 0-50; lat. 0-40; alt. 0-43 poll. 



Hab. ? 



Cardium fornicatum. Conch. Illustr. f. 50. Card, testd subqua- 

 dratd, postice angidatd, antice rotundatd ; albd, purpureo-macu- 

 latd, intiis aurantiacd, ad margines jnirpureo-rufescente macu- 

 latd : costis 35, quarum anteriorum 23 biangulatis, imbricatis, ad 

 latera minutissime spinoso-crenulatis. 



Long. 1- ; lat. 0-75; alt. l" poll. 



Hab. ? Mus. F. J. Stainforth. 



A very beautiful shell, in some respects resembling C medium. 



