Catalogue of Land and Fresh Water Shells. 97 



#7. Somatogyrus isogonus. 

 Like No. 86, but larger. 



Genus Pomatiopsis. 



88. Pomatiopsis lapidaria. 



H. slender, brown, no lip or teeth. 



FAMILY STREPOMATID^E. 



GENUS ANCULOSA. 



89. Anculosa costata, Anth. 



H. 7-16, dark brown, with two or three raised lines. 



90. Anculosa praerosa, Say. 



H. 4-5, sub-globular, horn color, within lip three or more purplish 

 bands. 



Genus Goniobasis, {Mouth always elliptical.) 



91. Goniobasis depygis, Say, 92, 93. 

 H. one or two brown stripes. 



92. Goniobasis pulchella, Anth. 

 Smaller variety of No. 91. 



93. Goniobasis semicarinata, Say. 



Like No. 91, but no stripes and more carinated in apex whorles. 



Genus Pleurocera, (Mouth always rhomboidal '.) 



94. Pleurocera canaliculatum, Say. 96. 



H. horn color, grooved longitudinal canal on whirls. 



95. Pleuorocera conicum, Say. 

 Shorter variety of No. 94. 



96. Pleuorocera undulatum, Say. 



Like No. 94, but spire longer and sharper and wrinkled on base 

 whorl. 



97. Pleurocera labiatum, Lea. 98. 

 H. .98, pale horn color. 



98. Pleurocera neglectum, Anth. 



Like No. 97, but having two brown bands. 



