264 REPORT ON ALBATROSS MOLLUSCA — DALL. 



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Lucina pecten Lamarck. 



Lucina squamosa Lamarck. 



Lucina costata Tuomey & Holmes. 



Lucina trisulcata Conrad. 



The above-mentioned species of Lucina were obtained at Station 2758, 

 90 miles southeast from Cape San Eoque, Brazil, in 20 fathoms, shelly 

 bottom. L. pecten was also collected at the Abrolhos Islands, off the 

 coast of Brazil, near Bahia. 



Family DIPLODONTID^E. 



Diplodonta soror C. B. Adams. 



Diplodonta semiaspera Philippi. 



The above species were collected at Station 276G, off the Bio de la 

 Plata, in 10i fathoms, sand. 



Diplodonta subglobosa C. B. Adams. 



This species was collected at Station 2758 with the species of Lucina 

 above mentioned. 



Suborder CHAMACEA. 



Family CHAMLTLF. 



Genus CHAMA Brugniere. 



Chama sarda Reeve. 



This well-characterized species was collected at the Abrolhos Islands, 

 Brazil. 



Suborder CARDIACEA. 



Family CARDIIDyE. 



Genus CARDIUM Linne". 



Subgenus LOPHOCARDIUM Fischer. 



Lophocardium Fischer, Man. de Couchyl, p. 1038, 1887. Type C. Cumingi Adams & 

 Reeve. 



Lophocardium Annettae Dall. 

 Plato x, Fig. 4. 

 Lophocardium Annettes Dall, Nautilus, p. 13, June, 1889. 



Shell thin, inflated, subovate, longer than high; color rose red with a 

 tinge of salmon-color ; covered with a thin dehiscent papyraceous epi- 

 dermis produced on the edges of the elevated sculpture ; umbones in- 



