508 Zoological Society, 



valde angulatis, Icevibus ; postremis subplanulatis^ tubercuUs 

 obliquis ornatis. 

 Long. 1-70; alt. I'SO; lat. 1-20 poll. 

 Hab. ad insulam Leyte, Philippinarum. H. Cuming legit. 

 The ribs are much more numerous and close than in C. murica' 

 turn, and C. Radula is described as having the ribs angular on both 

 sides, which is not the case with this species. 



Cardium Unicolor, Conch. lUustr. f. 29. 42. Card, testa ovali 

 ventricosdi postice subelongatd, pauld emarginatd, albdj purpurea 

 obscure maculatd, epidermide fused tenui indutd ; costis numero- 

 sis, anticis, mediis, et poster ioribus rotundatis, minute crenulatis; 

 extremis planulatis. 



Long. 1-50; lat. I'lO; alt. 1-70 poll. 



Hab. ad ins. Ticao, H. Cuming legit. 



Found in sandy mud, at five fathoms. A slightly mottled variety 

 is brought from the Brazils, 



Cardium impolitum. Conch. lUustr. {.6.66. Card, testd crassd, 

 cuneiformi, subcequilaterali ad marginem dorsalem angustiore, ad 

 ventralem rotundatd ; alba, f usee obscure maculatd, postice pur- 

 pur eo-fasciatd ; costis 35 impolitis, subcrenulatis ; epidermide 

 fused. 



Long. 1-50; lat. MO; alt. 1*90 polL 



Hab. ad mare Sjnense. 



Remarkable for its wedge-like, nearly equilateral shape. 



Cardium oxygonum. Conch. lUustr. f. 9. Card, testd ovali, sub- 

 ventricosd, ad umbones angustd ; albd, rubro fuscoque maculatd, 

 intus albd; costis 35, quarum 18 anterioribus validis, acutangu- 

 latis, ad latera antica atque ad angulos crenulatis; deinde 9 

 posterioribus acutangulatis ad angulos crenatis, ad latera Icevi' 

 bus ; extremis angustis, Icjevibus, tubercuUs obliquis ornatis. 

 Long. 1-20; lat. 090; alt. 1*40 poll. 

 Hab, ad mare Sinense. 



This species resembles C. maculosum of Wood in form, but in 

 sculpture it more nearly approaches C. angulatum of Lamarck, from 

 which, however, it is distinguished by being narrower towards the 

 umbones, less ventricose, and having the ribs more distinctly angu- 

 lated. 



Cardium subelongatum. Conch. Illustr. f. 61. Card, testd ovali, 

 subventricosd, elongatd, crassd, postice pauld hiante ; albd, fusco 

 rubroque maculatd, epidermide flavicante indutd ; costis 32, qua- 

 rum anticis biangulatis, crenulatis ; mediis Icevibus, biangulatis ; 

 posticis rotundatis, Icevibus, tubercuUs obliquis ornatis. 

 Long. 1-85; lat. 1-40; alt. 2-35 poll. 

 Hab. ad Sanctae Thomse insulam (Ind. occidentalis). 

 The above name has been given, to indicate the near alliance be- 

 tween this species and the true C. elongatum of Brug., with which 

 it has been confounded. Our shell resembles some of the figures to 

 which Lamarck refers for his C marmoreum, and which Bruguifere 

 quotes for C elongatum. It is much longer and smoother than the 



