56 BULLETIN 37, UNITED STATES NATIONAL MUSEUM. 



Tarle II. B. — List of Pelecypoda — Coiitiuued. 



Ser. 

 No. 



Name and authority for species. 



PI. 



rigs. 



Alt. 



or 



Lon. 



Eauge 



in 

 depth. 



STorlho n 

 extreme range. 



283 



Genus GEMMA Deshayes. 



56 



11 







Labrador 



Cape Cod 



Tampa 



Pr. Edw. Isl . 



Florida cJtr .. 

 C. Lookout .. 



Hatteras 



Hatteras 



Texas 



Hatteras 



Hatteras 



Hatteras 



Cape Florida 



Gulf of Mex. 



Florida Keys? 



Florida Str.. 



Virginia 



Hatteras 



Hatteras 



Georgia 



284 



var mauliattaneusis Pricae .. 







285 



Genus CYTHEREA Lamarck. 

 C Sitnpsoni Dall ...... ... 











286 



987 



C. couvexa Say < 



C. albida Ginelin 



56 

 64 



15 I 

 I42a 5 



50.0 



■2 

 V3 



n 

 :; u 



-1'7-M 



288 







9H() 



C. hebrsea Lamarck . . > . 









Tri 



940 



c. 









9qi 











9q> 



Subgenus Callista Morcli. 









^s- 



9q-^ 











294 



Subgenus Transsnnella Dall. 



T. Conradina Dall 



T. cubaiiiaua Orbiguy 











n 



296 



Subgenus Dione Gray. 









oqr 



Subgenus Tivela Link. 

 T. uiacti'oides Born 





. 







908 



Subgenus Venerigiossa DalL' 

 V. vesica Dall 







22. 



-,a.J- 



9q) 



Genus DOSINIA Scopoli. 

 D. discus Reeve .. .. 









3011 



D. elegaus Conrad 











301 



Genus LUCINOPSIS P. & H. 

 L. tenuis Recluz 













302 



Family CORBICULID^. 



Genus CYRENA Lamarck. 



Sectiou Leptosiphon, Fiscber. 



C. carolineusis Bosc 



i.... 







• 



