Qiiaikriy Joiinial of Conciiology. 343 



DESCRIPTION OF A NEW SPECIES OF PUPA. 



By Chas. R. Judge. 



Read before llie Cincimiali Society of Natural History, Jan. 2ih1, 1877. 



Pupa Cincinnatiensis, nov. sp. 



Shell delicate, minute, shining, translucent, nearly colorless, 

 smooth, very faintly marked by the strice of growth and by 

 numerous microscopic wrinkles; apex obtuse; wJiorh 43^ to 5, 

 convex, separated by a deeply impressed suture, aperture semi- 

 ovalj having in the right hand portion of the peristome a slight 

 fold, slightly contracting the aperture at the margin ; peristome 

 simple, heavily thickened near the margin, the callus extending 

 over the parietal wall; aperture contracted by five prominent 

 denticles, seated on the callus, one prominent on the parietal wall, 

 two on the columella, the lower being the smaller of the two, and 

 two on the other portion of the peristome, more deeply seated in 

 the throat, and occasionally one or two very minute rudiments on 

 the peristome. 



Length 1.56 mill., diam. 84 mill. 



This shell is found on both sides of the Ohio River, near 

 Cincinnati, stationed in deep beds of damp leaves, in woods, 



