SECTION B.] NORTH AMERICAN CONCHOLOGY. 



551 



[Lea, Observations, &c] 



Unio phaselus Lea. 



Sagittarius Lea. 

 v scobinatus Lea. 



substriatus Lea. 



Africanus Lea. 



Verreauianus Lea. 



Shurtleffianus Lea. 



effulgens Lea. 



Shuttleworthii Lea. 



Dunkerianus Lea. 



nucleus Lea. 



Brownii Lea. 



Wheatleyanus Lea. 



Suavidicus Lea. 



Nuttallianus Lea. 



Newcombianus Lea. 



Cambodiensis L^ea. 

 Anodonta Holtonis Lea. 

 Plagiodon Lea (n. s. g.) 



isocardioides Lea. 

 Triquetra contorta Lea. 

 T. lanceoluta Lea. 



Siam. 



Siam. 



Siam. 



Siam. 



C. of Good Hope. 



C. of Good Hope. 



Sina river, India. 



Brazil. 



Australia. 



Rio de Janeiro. 



Siam. 



Mocha ? 



R. Negro, Plata. 



River Amazon. 



India. 



Nicaragua. 



Tackrong river. 



Carthage, New 



[Grenada. 

 River Plata. 

 China. 



Da Id email, Phillips, Conrad, f^ea, &c. — The 



Proceedings of the Academy of Natural Sciences of Philadel- 

 phia. 



July, 1841. 

 Vol. Pa. PI. Fig. 



i 53 Ilalcleman. 



53 



May, 1S46. 

 ii 66 



(Same as p. 372.) 

 Pisidium diaphanum Hold. Brazil? 



Phillips. — Description of a new Fresh Water Shell, 

 and observations on Glandina obtusa Pfr. : by John 

 S. Phillips. 



66 i 11 Physa princeps Phil. Yucatan. 



66 i 33 Glandina (Achatina) cylin- 



dracea Phil. Yucatan. 

 G. obtusa Pfr. ? 



