Number 91 January 21, 192 1 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 



Ann Arbor, Michigan Published by the University 



THREE NEW SPECIES OF PLEUROCERIDAE 



By Calvin Goodrich 



Pleurocera hinkleyi, new species 



Description: Shell smooth, elevated, acute. Color light olive 

 green, with two dark bands above the periphery and one below. 

 Apex of the type eroded. Remaining upper whorls are carinated 

 at the base, finely wrinkled perpendicularly, differing in sculpture 

 from the maturing whorls. The last three whorls are constricted in 

 the middle and are more shining than the upper whorls. The body 

 whorl has five strongly marked revolving lines below the periph- 

 ery, the uppermost of which constitutes the carinae of the earlier 

 whorls. Total number of whorls of type, eight. Sutures indented, 

 showing at some whorls parts of the second of the five raised lines. 

 Base of shell not as broadly angulated as in the average specimen 

 of P. acuta Raf. Aperture rather narrow and elongate, ending in 

 the broadly channeled spout common to the genus. Columella 

 is scarcely more than a wash of white over the epidermis. Peristome 

 is sharp-edged, very sinuous. 



Operculum thin, light reddish brown, the left margin nearly 

 straight, the right margin curved, the basal margin broadly and 



