Quarterly Journal of Conchology. 341 



Propably a hole was accidently broken in the body-whorl, and 

 the animal, instead of closing it, converted it into a new aperture, 

 thereby somewhat shortening the inhabited part of its shell. 



Jan. 4th, 1878. 



DESCRIPTION OF TWO NEW GASTEROPODS. 



By William Doherty. 

 University of Cincinnati, U.S.A. 



Somatogyrus trothis, Doherty. (Plate IV., fig. i.) 



Shell globosely ovate, rather heavy, yellowish-green ; spire 

 conical, elevated for the genus, nearly as long as the aperture ; 

 suture deeply impressed ; tuhorls four, rapidly increasing, with fine 

 lines of growth, last year's growth somewhat dilated at its junction 

 with that of the previous year; last whorl constricted near 

 peristome, forming an obliquely-impressed scar above, and at the 

 base below the closed umbilicus, a deep impression which some- 

 times indents the peristome; aperture^ broadly ovate, obtusely 

 rounded below; pen'sto/ne somewhat shouldered above, slightly 

 angulated below at its union with the rounded columella. 



Length 5 mill., diameter 4 mill. 



Found on stones in the Ohio River, above the mouth of the 

 Five-mile Creek, Campbell County, Kentucky; also on leaves in 

 Five-mile Creek. 



Specimens are in the cabinet of the Philadeli)hia Academy 

 of Sciences, and in those of Prof. A. G. Wetherby and Dr. James 

 Lewis, as well as in my own. 



