NORTH AMERICAN CONCHOLOGY. 



121 



227 xxxiii309a,b 



228 xxviii 282 



228 xxviii 2S3 



229 xxix 2S6 



230 xxix 287 



230 

 230 

 230 



231 



231 xxix 288 a, b 



231 



232 xxxi 298 



232 



232 

 232 

 233 



Cycladae. 



2v :i me. 



Cyclas similis Say. 



C. Saratogea et sulcata Lain. 



dubia Say. 



S. striatina Lam. 



partumeia Say. 



C. cornea (var. 2, 3.) Lara. 



rhomboidea Say. 



elegaus Adams. 



edentula Say. 



transversa Say, e. 1. 



staminea Cunrad, e. 1. 



elevata If aid., e. 1. 

 Pisidiuni abruptum Ilald., e. 1. 



abditum Hold., e. 1. 

 Cyrena Carolinensis Bosc, e. 1. 



Saxicavitiae. 



Saxicava distorta Say. 

 Petricola pholadiformis Lam. 

 Petricola fornicata Say. 

 dactylus Sowerby. 



Maetridae. 



Mactra solidissima Chemnitz. 

 M. gigantea Lam. 

 Spissula gigantea Gray, 

 lateralis Say. 



Mulinia lateralis Gray. 

 ovalis Gould, e. 1. 

 similis Say, e. 1. 

 fragilis Chemnitz, e. 1. 



M. oblonga Say. 

 nuculus Conrad, e. 1. 

 Mesodesma arctata Conrad. 

 Mactra arctata Conrad. 

 deaurata Conrad. 

 Mactra Jauresii Gin'rin, e. 1. 

 Lutraria canaliculata Say, e. 1. 

 lineata Say, e. 1. 

 L. papyratia Conrad. 

 Montacuta bidentata Montagu, e. 

 Kellea rubra Turton, e. 1. 

 Cumingia tellinoides Conrad. 

 Mactra tellinoides Conrad. 



Locality. 



Kentucky. 



New Orleans. 

 Elk river, Md. 

 Lancaster Co, Pa. 

 Carolina. 



Northern coast. 

 R. I., N. Y. ? 

 Georgia. 



New Jersey. 



Grand Banks. 

 Md. to Florida. 

 Ga. & Florida. 



1. New Bedford. 

 New Bedford. 



