NORTH AMERICAN CONCHOLOGY. 



251 



Pa. 



PI. 



Fig. 



152 







153 



Iviii 



8,4 



153 



Iviii 



5 



155 



lix 



1 



155 







155 ' 







156 



lix 



2-5 



158 



Ix 



1 



]91 



Ixi 



13, L 



194 







266 



Ixix 



1,2 



288 







292 



Kame. Locality. 



Unio marginalis Lam. North America, 



U. testudinarius Lea. [&c. 



obliquus Lajii. North America. 



ochraceus. North America. 



Symphinota ochracea Lea. 

 U. luteola Lam. 

 multiplicatus Lea. North America. 



U. heros Say. 

 purpuratus Lam. 



U. ater Lea. 

 purpurescens Lam. New York. 



U. purpureus Say. 

 asperrimus Lea. North America. 



V. quadrulus Raf. 

 tuberculatus Barn. lUiuois. 



Margaritana tuberculatus Sch. 

 Symphinota cristaria Lea ? 

 13, 14 Cyclas striatina Lam. North America. 



Gnathodon cuneatus Gray. Lake Poiitchar- 



Rangia cyrenoides Des MouL [train, W. F., &c. 

 Saxicava Grcenlandica Pot. et Mich. Greenland. 

 Helix Troostiana Pfr. Tennessee. 



Polygyra Troostiana Lea. 

 Jo spinosa Lea. 



Chenil. — Illustrations Conchyliologiqucs ou Description et 

 Figures de toutcs les Coquillcs connues, &c. &c. : par J. C. 

 CiiENU. Paris. 



[No dates are given. I have already quoted a portion of this work on 

 p. 333 of Part L It was left in an unfinished state, a large number of 

 plates having appeared without the accompanying text. Very many 

 American species are figured — of the following only are descriptions given. 

 — W. G. B.] 



Pa. 

 16 



PI. 



20 



XXVI 



xxvii 



Fig. 

 1-3 



1 



3,4 

 21,22 

 17,18 



Name. 

 Sigaretus maculatus Say. 

 S. zonalis D'Orb. 

 concavus Pot. 

 perspectivus Say. 



Strombus galeatus Sv>. 



Oliva zonalis Lam. 

 petiolita Duel. 

 giacilis Sowb. 



17 



Locality. 

 Southern Coast, 

 [&c. 



New Jersey, &c. 

 Mazatlan. 



Acapulco. 

 Mexico. [&c. 



Gulf of California, 



