Zoological Society, 509 



former, and does not agree with the description. The true C. elongatum 

 is described by Brug., from a specimen in the collection of M. de La- 

 marck, as an elongated, ventricose shell of 39 or 40 ribs, and attain- 

 ing a large size. It seems to have been a matter of dispute between 

 the two conchologists, whether the above-named species were iden- 

 tical. We were unable to meet with a shell agreeing with Bru- 

 guiere's description, until the arrival of Mr. Cuming with fine spe- 

 cimens sufficiently characteristic to set the matter at rest. The 

 present species has fewer ribs and is less ventricose. 



Cardium enode. Conch. lUustr. f. 51. Card, testa ovalif ventri- 

 cosd, postice subexpansd, fortissime dentatd ; pallide fulvd roseo 

 fasciatd, intus albd, sub umbo7iibusJlavidd, ad marginem purpu- 

 red; costis 38, planulatis, aniicis leviter crenatis ; interstitiis 

 angustissimis. 

 Long. 2-30; lat. I'GO; alt. 2*60 poll. 

 Hab. ad insulam Ceylon. 



Much more spread than C. elongatum, with the ribs flatter, and 

 terminating in very strong overwrapping teeth. 



Cardium subrugosum. Conch. lUustr. f. 34. 71. Card, testa 

 crassd ovali ventricosdy ceiate postice subacuminatd ; costis ZZ^ 

 quarum 25 anterioribus rotundatis, crenulatis ; extremis Icevibus 

 vix elevatis ; epidermide fused. 



Var. testd albd, purpurea maculatd. 



Var. testd postice alba, anttce Jlavidd. -* 



Long. 2-30; lat. 1*70; alt. 2*40 poU. 



Hab. ad insulam Ceylon. 



The ribs are not so deep as in C, rugosum, and the eight posterior 

 ones are so little raised as to leave the surface nearly smooth. 



Cardium alternatum. Conch. lUustr. f. 64. Card, testd oblique 

 ovali, compressd, postice subexpansd, albd, luteo vel fusco-Jla^ 

 vescente fasciato-maculatd ; epidermide fusco indutd ; costis 32, 

 anticis crenulatis, subangulatis ; deinde posterioribus angulatis 

 antice Icevibus ; extremis muricatis ; interstitiis convexis, utrin- 

 que sulcatis. 

 Long. 2-40; lat. 1-30; alt. 2*60 poll. 

 Hab. Ticao, Philippinarmn. H. Cuming legit. 

 A beautiful pale-coloured specimen of this species has existed for 

 some time in the well-selected cabinet of Miss Saul, who, however, 

 possesses no information as to its locality. With this we have been 

 supplied by Mr. Cuming, who collected some richly coloured indi- 

 viduals from the above-mentioned island ; they were found in cored 

 sand, on reefs, at low water. 



Cardium attenuatum. Card, testd Icevi, cuneiformi, compressdf 

 oblique elongatd, postice subcomplanatd, omnino obscure striatd, 

 ad marginem dentatd ;Jlavd, rubra maculatd, maculis posteriori' 

 bus validis ; intus albd. 

 Long. 1-80; lat. 1-20; alt. 2*60 poll. 

 Hab. ad insulam Ceylon. 

 A good figure of this species is found in Wood's * General Con- 



