NORTH AMERICAN CONCHOLOGT. 



91 



Adams. — Description of a new Species of Thracia: by C. B. 

 Adams, Prof. Chem. and Nat. History in Middlebury College. 

 (From American Journal of Science, 0. S., vol. xliii, Ko. 1. 

 April-June, 1842.) 



Page. Name. 



145 Thracia inequalis Adams. 



(With, three wood-cuts.) 



Locality. 

 Gulf of Mexico. 



Adams. — Fresh-Water and Land Shells of Yermont : by C. B. 

 Adams, A. M., Prof. Nat. Hist, in Middlebury College. (From 

 Thomson's History of Yermont, Part I. Also published in 

 pamphlet form, 1842.) 



[With full descriptions of genera and species, and wood-cuts of some 

 species.] 



Pa 



se 





Pa 



ge 





Hist. 



Pan 





Hist. 



Pam 



. 



151 



1 



Paludina decisa Say, fig. 



156 



6 



Planorbis deflectus Say. 



152 



2 



Integra Say. 



156 



6 



hirsutus Gould. 



152 



2 



porata Say. 



156 



6 



Succinea obliqua Say, fig. 



152 



2 



lustrica Say. 



156 



6 



ovalia Say. 



152 



2 



Valvata sincera Say. 



156 



6 



avara Say. 



152 



2 



Melania depygis Say, fig. 







S. vermeta Say. 



153 



3 



Limnaea megasoma Say, 



157 



7 



Bulimus lubricus Dr. 



153 



3 



appressa Say. [fig. 



157 



7 



Pupa milium Gould. 



153 



3 



gracilis Jay. 



157 



7 



ovata Say. 



153 



3 



pallida Adams. 



157 



7 



badia Adams. 



153 



3 



elodea Say, 



157 



7 



armifera Say. 



154 



4 



desidiosa Say. 



158 



8 



albilabris Ward, ined. 



154 



4 



caperata Say. 







Ct/rl ostomamarginata S 



154 



4 



Physa ancillarla Say. 



158 



8 



contracta Say. 



154 



4 



heterostropha Say, fig. 



158 



8 



Tappaniana Tro7-(/,ined 



154 



4 



gyrina Say. 



158 



8 



exigua Say, fig. 



154 



4 



hypnorum Dr. 



159 



9 



Helix albolabris Say, fig 







P. elorifjata Say. 



159 



9 



thyroidus Say. 



155 



5 



Planorbis trivolvia Say, 



159 



9 



dentifera Binn. 







P. Icntus Say. [fig. 



159 



9 



palliata Say. 







corpulentus Say. 



159 



9 



monodon Rack. 



155 



5 



campanulatus Say. 







II. fraterna Say. 



155 



5 



bicarinatua Say. 



159 



9 



concava Say. 



155 



5 



armigerus Say. 







(incl. //. Vancouveren 



155 



5 



exacutua Say. 







sis Lea.) 



156 



G 



parvus Say. 









