NORTH AMERICAN CONCHOLOGT. 



ITT 



Page. 



Name. 



Locality. 



40 



Venus grata Say. 



V. discors Sowerby. 



West coast of Mexico. 



40 



mercenaria Linn. 



N. Y., N. J., Mass. 



40 



Mortoni Conrad. 



Florida. 



41 



notata Say. 



New York, 



41 



Nuttallii Conrad. 



California. 



42 



tricolor Brod. 



California. 



42 



undatella Sowerby. 



Family Cardiacea. 



California. 



44 



Cardium elatum Sowerby. 



California. 



44 



var. 



Gulf of California. 



44 



GrcBnlandicum Chemn. 

 C. edentulum Sowerby. 



Greenland. 





var. Mactra radiata Donovan. 



North Atlantic. 





var. Aphrodite columha Lea. 



B'ks of Newfoundland. 



44 



Icelandicum Chemn. (var.) 

 C. puhescens Couth. 

 arcticum Sowerby. 



Massachusetts bay. 



45 



magnum Born. 



C, maculatum Gemlin. 



Gulf of Mexico. 





var. C. ventricosum Bru^. 



South Carolina. 



45 



Mortoni Conrad. 



New York. 



45 



Nuttallii Conrad. 



Upper California. 



45 



pinnulatum Conrad. 



Rhode Island. 



46 



quadragenarium Conrad. 



Upper California. 



46 



substriatum Conrad. 



California. 



47 



Cardita borealis Conrad. 



Vencricardia borealis Conrad. 



Rhode Island. 



47 



Floridana Conrad. 



Family Arcacea. 



Tampa Bay. 



49 



Area Americana Gray. 



Mobile. 



49 



formosa Sowerby. 



Mexico. 



50 



incongrua Say. 



South Carolina. 



50 



pexata Say. 



New York. 



50 



ponderosa Say. 



A. hemicardium Koch. 



Coast of United States. 



51 



transversa Say. 



New York. 



51 



trapezia Dcsh. 

 A. tohata Reeve. 



Mexico. 



52 



Nucula antiqua Miyhds (fossil). 



Maine. 



52 



buccata Sip. 



N. rostrutu? Lam. 



12 



Greenland. 



