smith: on callocardia and vesicomya. 83 



*4. Diplodonta pilula, Dall : Bull. Mus. Comp. Zool., vol. ix 

 1(1881), p. 136; vol. xii, p. 274, pi. viii, fig. 13, as Callocardia 

 ■■ ( Vesicomya) pilula. 

 3 Sab. — Caribbean Sea, 339 fathoms. 



*5. Callocardia (Vesicomya) venusta, Dall : Bull. Mus. Conip. 

 : Zool., vol. xii (1886), p. 274; vol. xviii (1889), p. 439, pi. xl, fig. 5. 

 f Sab.— Off Cuba, 801 fathoms ; off North Carolina, 731 fathoms. 



*6. Callocardia albida, Dall : Proc. U.S. Nat. Mus., vol. xii 

 (1890), p. 268. 



Sab. — Off Rio Janeiro, 59 fathoms. 



*7. Callocardia Smithii, Dall : Proc. U.S. Nat. Mus., vol. xii 

 \ (1890), p. 208, pi. x, figs. 1, 2, 3. 

 Sab.— OS. Tobago, 880 fathoms. 



8. Callocardia Stearnsii, Dall: Proc. U.S. Nat. Mus., vol. xviii 

 (1896), p. 17. 



Sab.— OS coast of Washington, 786 fathoms. 



9. Callocardia lepta, Dall : Proc. U.S. Nat. Mus., vol. xviii 

 (1896), p. 17. 



Sab.— Gulf of California, 857 fathoms; off Oregon, 786 fathoms. 



*10. Callocardia ovalis, Dall: loc cit., p. 18. 

 Sab. — Gulf of Panama, 1,672 fathoms. 



*11. Callocardia gigas, Dall: loc. cit., p. 18. 

 Sab. — Gulf of California, 857 fathoms. 



*12. Callocardia (Vesicomya) Dalli, Verrill & Bush : Proc. U.S. 

 Nat. Mus., vol. xx (1898), p. 817. 



Sab. — Atlantic, off Portugal, 740-1,095 fathoms. 



*13. Callocardia Callogonia) Leeana, Dall : Proc. U.S. Nat. 

 l Mus., vol. xii (1890), p 269. 



Sab.— OS Tobago, 880 fathoms. 



*14. Callogonia angulata, Dall: op. cit., vol. xviii (1896), p. 19. 

 Sab.— Gulf of Panama, 1,270 fathoms. 



* Species thus marked are known to the writer only from the descriptions. 



