476 Zoological Society, 



numerosis, confertis, postice fornicatis, costarum inierstitiis sub- 

 profundis ; albidd, fusco hie illic nehulosd; intus postice vivide 

 purpurascente . 

 Conch. Icon., Car dimn, pi. 4. f. 19. 



Hab. Cagayan, island of Mindanao, Philippines (found among 

 sand at low water) ; Cuming. 



The vaulted structure of the scales in this species is about inter- 

 mediate in its character between that of the scales of the Cardia con- 

 sors and iso cardia. 



Cardium australiense. Card, testd transverse ovatd, Donaci- 

 formi, medio subcontractd, postice flexuoso-angulatd, subrostratd, 

 antice compresso-attenuatd ; dimidio postico radiatim sulcata, an- 

 tico Icevigato, nitente ; albidd, ared posticd strigis brevibus fuscis 

 utrinque ornatd. 

 Conch. Icon., Cardium, pi. 5. f. 24. 

 Hab. Port Lincoln, South Australia ; Harvey. 

 This .shell may be chiefly distinguished from the Cardium Donaci- 

 forme, to which it is in many respects allied, by the contracted flex- 

 uous prolongation of the posterior portion, and by the pecuHarity of 

 one half of the shell being conspicuously grooved, whilst the other 

 half is smooth and shining. 



Cardium oviputamen. Card, testd oblique ovatd, tenui, ventricosd, 

 radiatim tenuissime striata ; nived, opacd, strigis lineisve rosacea- 

 fuscescentibus exilibus undatis concentrice nebulosd, epidermide 

 pallida margines versus indutd ; marginibus intus subtiliter crenu- 

 latis. 

 Conch. Icon., Cardium, pi. 7. f. 36. 



Hab. ? 



The general appearance of this and the following species is very 

 like that of the Cardium serratum ; both however are of a less oblique 

 form, and the Cardium oviputamen under consideration is more ven- 

 tricose. 



The concentrically waved pinkish brown marks above noticed, 

 though faintly indicated, are nevertheless characteristic, as distin- 

 guished from those of a different pattern, in the following species. 



Cardium vitellinum. Card, testd oblique ovatd, tenuiculd, radi- 

 atim striatd ; lutescente-albd, maculis parvis numerosis rosaceo- 

 fuscescentibus umbones versus copiose lentiginosd, epidermide luted 

 indutd; marginibus intus crenulatis. 



Conch. Icon., Cardium, pi. 7. f. 37. 



Hab. } 



This shell is of a less ventricose ovate structure than the preceding, 

 and farther distinguished by its different tinge and style of colouring. 



Cardium hystrix. Card, testd subquadrato-cordatd, postice con- 

 cavO'ttngulatd, radiatim cost at d, costis ad duas et triginta, an- 

 gustis, compressis, posticis squamulis brevibus, cceteris spinis 

 squamceformibus erectis, umbones versus subinjlexis, elegantissime 

 ornatis ; costarum interstitiis striis elevatis transversim subtiliter 



