42 LIMNEA HUMILIS. 



calcareous deposit; a distinct, and rather open 

 umbilical aperture; color pale reddish-white. 

 Total length seven-twentieths. Inhabits South 

 Carolina. 



"Of a dozen specimens sent me by Mr. 

 Elliott, none exceeded the limit here assigned 

 to the species. It differs from any other 

 species I have seen; a variety of it, sometimes 

 quite black, was found by Dr. M'Euen at 

 Owego, on the Susquehanna." Say. 



"SHELL (L. modicellus) blackish, not elon- 

 gated, whirls rather more than four, convex; 

 suture deeply impressed; apex acute; aperture 

 very regular, the labium and labrum being 

 subequally curved; the fold of the columella 

 rather slight. Total length aV of an inch; 

 breadth 1; length of the aperture y. 



"Smaller than any of the species I have 

 hitherto described. It was found by Dr. 

 M'Euen, at Owego, on the Susquehanna river, 

 near the State of New York." Say. "The 

 animal of modicellus is bottle-green, without 

 exception." Gould. 



COLOR light yellowish, and translucent, when 

 not obscured by foreign matter. 



GEOGRAPHICAL DISTRIBUTION. From Maine 

 to South Carolina inclusive: Ohio. 



