CARDITA.— Plate V. 



Broderip, Pro. Zool. Soc, 1832. 

 Hub. Gallapagos Islands (dredged in fine sand at the 

 depth of six fathoms) ; Cuming. 

 This is a very interesting species ; the ribs are very 

 prettily variegated with white and yellowish or violet- 

 brown, and the ligamentary area on the posterior side 

 of the shell is vividly marked with cross zebra-like 

 streaks of the same colour. 



Species 26. (Mus. Cuming.) 

 Cardita tumida. Card, testa solidd, subtrigond, antice. 

 cordatd, tumida; costis latis, depressis, subindi- 

 stinctis; earned velfulvd, maculis purpuras, parvis, 



spadiceis, postice varid, epidermide hiteo-fused in- 

 dutd ; umbonibus incurvis, albis. 



The swollen Cardita. Shell solid, somewhat trian- 

 gular, heart-shaped anteriorly, swollen ; ribs broad, 

 depressed, rather indistinct ; yellow or flesh-colour, 

 variegated on the posterior side with small waved 

 purple spots, and covered with a yellowish-brown 

 epidermis ; umbones curved inwards, tipped with 

 white. 

 Broderip, Pro. Zool. Soc, 1832. 



Hab. Puerto Portreio and Isla de Plata, America (found 

 at the former place in a young state at the depth of 

 eleven fathoms in fine sand and gravel, and at the 

 latter place in a full-grown state at the depth of 

 seventeen fathoms in coral sand) ; Cuming. 

 This interesting species is very nearly allied to ho- 

 cardia, by reason of the beautiful incurvature of the um- 

 bones ; it is however a true Cardita, and may be readily 

 distinguished by its solid structure. 



