[95] 



5. Stenotrema germana, Gould. 



Plate 9, figures 22, 23. 



Shell small, solid, imperforate ; spire depressed conical above ; 

 -whorls 5, narrow, subangular at the periphery, and very con- 

 vex below ; aperture narrowly transverse, the parietal wall with 

 a long blade-shaped tooth. Horn color, with a few scattered 

 hairs. 



Diam. 7 "5, height 5 mill. 



Oregon. 



Very like S. monodon, but the base is more convex, and not 

 indented around the axis. The hairs are much fewer in number 

 than in S. hirsuta. 



ft Periphery carinate. 

 X Outer lip incised in the middle, 



§ Lenticular species. 

 6. Stenotrema spinosa, Lea. 



Plate9, figures 26,28, 29. 



Lenticular, upper surface depressed conical, suture slightly 

 marked ; whorls 6, flat above, carinate at the periphery, and 

 convex below, slowly increasing in size, and covered with pros- 

 trate hairs in fresh specimens ; aperture very narrow, lip slightly 

 reflected and thickened, slightly incised in the middle, parietal 

 tooth long, narrow, projecting, extending from the axis to the 

 angle of the lip above ; umbilical region slightly indented. Dark 

 chestnut color. 



Diam. 14, height 5 mill. 



Mountainous regions of East Tennessee, and the northern 

 parts of Alabama and Georgia. 



The revolution of the whorls of the spire causes a very 

 slight projection of the carina of each at the suture. Young 

 shells are widely umbilicate, with hairs covering the surface, and 

 projecting around the periphery like a fringe. 



18* 



