56 POMATIOPSIS. 



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9. AMNICOLA TURBINIFORMIS, Tryon. 



Plate 17, figure 6. 



Shell ovate, turbinated ; whorls very con- 

 vex ; sutures nnpressed, spire obtuse at apex ; 

 nearly four whorls ; body large, well rounded, 

 a little angulated on the periphery ; aperture 

 widely ovate ; umbilicus narrow. Color dark 

 green, light blue within the aperture. 



Alt. 3-3, diam. 3 mill. 



N. E. California and S. W. Oregon. 



This species resembles Cincinnatiensis, but 

 is smaller and more solid, with shorter spire, 

 smaller umbilicus and darker color. It also 

 differs in the periphery being slightly angled. 



Genus POMATIOPSIS, Tryon. 

 1. POMATIOPSIS LAPIDARIA, Say. 



Hald., p. 18, t. i, f. 10. 



Occurs from Eastern New York to Iowa, 

 and southward to Missouri and Georgia. 

 (37) 



