28 THE NAUTILUS. 



Goniobasis livescens Menke. 



Physa heterostropha Say. The individuals are smooth and highly 

 polished, and are destitute of impressed spiral lines. One specimen 

 is a scalariform monstrosity. 



Physa integra Haldeman. Rare. 



Lymncea desidiosa Say. Many zebra-like forms. 



Planorbis trivolvis Say. 



Planorbis bicarinatus Say. 



Planorbis parnis Say. 



Segmentina armigera Say. 



Note on 



A collection of Valvatse from Long Lake, Lake County, Illinois, 

 recently received, is of some interest, especially as regards the rela- 

 tive numbers of individuals. 



Valvata tricarinata 107. 



Valvata tricarinata confusa 6. 



Valvata bicarinata 1. 



bicarinata normalis 33. 



A NEW SPECIES OF SUCCINEA. 



BY HENRY A. PILSBRY. 



Succinea Indiana n. sp. 



Shell obesely ovate, thin, brownish-amber or raw sienna colored, 

 the apex reddish. Sculpture of fine growth-lines and wrinkles, be- 

 coming rather coarse wrinkles on the last half whorl. Whorls 3-^, 

 very convex, the last large and inflated. Aperture large, oblique, 

 the outer lip either regularly arcuate or somewhat flattened in the 

 middle. Columella thin and strongly arcuate throughout. 



Length 11, diam. 7, length of aperture 7.7 mm. 



Length 10.7, diam. 6.9, length of aperture 7.7 mm. 



Length 10, diam. 6, length of aperture 7 mm. 



New Harmony, Posey Co., Indiana ; cotypes in collections A. N. 

 S. P., the State Museum at Indianapolis, and L. E. Daniels ; collected 

 by L. E. Daniels. 



This species seems to be closely related by the obese shape to 

 S. campestris of Georgia and Florida and S. unicolor Tryon of New 



