NATURAL SCIENCES OP PHILADELPHIA. 119 



orbiculafa, Say, but will at once be distinguished b3-its somewhat 

 translucent aspect, its umbilicus, and the noticeable lamelliform 

 tooth on the parietal wall. Regarded as belonging in the sub- 

 genus llesodon, it will at once be recognized as the most diminutive 

 known member of the group. It is not without importance, in- 

 asmuch as it increases the list of rare species referable to Meso. 

 don heretofore found in Cherokee Co.,' N. C, a portion of which 

 territory forms what is now known as Clay County. The shell 

 can scarcely be confounded with any known species. At the re- 

 quest of Mr. Lea (who refers the shell to me for description) I 

 name the species in honor of Miss Annie E. Law, wdiose earnest 

 labors in this department of zoology merit a much higher recog- 

 nition than this. 



Helix Clarkii, Lea, Helix Wheatleyi, Bland, Helix Christyi, Bland. 



