236 HELICID^E. 



GEOGRAPHICAL DISTRIBUTION. Has been noticed in 

 nearly every part of the United States, and in Canada. 



REMARKS. This a very common species, inhabiting 

 forests, cultivated fields, and gardens. A situation of 

 which it seems very fond is in the crevices of wet. decay- 

 ing wood. It resembles the preceding species ; and 

 Ferussac considered it to be only a variety of that spe- 

 cies. A comparison of the two shows distinctions which 

 must, I think, prevent their being considered identical. 

 It is smaller, and has its umbilicus less developed in pro- 

 portion to its size. In their general aspect the two are 

 quite unlike ; but it is easier to distinguish them by the 

 eye than to describe differences where there are no 

 peculiarities of sculpture or coloring. The animal may 

 present further distinctive marks. 



66. HELIX ELECTRINA, GoULD. 

 PLATE XXIX. FIGURE 1. 



H. testa parva, depressa, umbilicata, tenui, pellucida ; 

 anfractibus quatuor, striatis ; apertura rotundata ; labro sim- 

 plici. 



SYNONYMS AND REFERENCES. 



Helix electrina, GOULD, Invertebrata, 183. f. 111. 



BINNEY, Boston Journ. Nat. Hist. III. 423, pi. 22, f. 2. 

 DE KAY, Nat. Hist. New York, 30. 

 ADAJIS, Vermont Mollusca, 11. 



DESCRIPTION. 



ANIMAL bluish black. 



