[97] 



slightly raised, suture a little impressed ; whorls 5|, narrow, 

 slowly enlarging, the last deflexed and constricted behind the 

 lip ; aperture transverse, narrow, ear-shaped, the extremities of 

 the lip connected by a callus and a long blade-shaped tooth upon 

 the body whorl, lip with a deep, wide notch in the middle. Dark 

 brown. 



Diam. 12"5, alt. 6-5 mill. 



Arkansas, Alabama and Tennessee. 



Distinguished from' S. Udgariana hj the thickened and re- 

 flected lip, and its deep, wide notch. 



Xt Outer lip not incised in the middle. 

 10. Stenotrema barbigera, Redfield. 



Plate 9, figures 32,' 33. 



Shell somewhat lenticular, sharply carinate, the carinas of the 

 spire whorls overlapping the suture; spire convexly conical; 

 whorls flattened, narrow, 5|- in number ; base convex ; aperture 

 narrow, transverse, extending from the periphery to the axis, 

 which is covered by the lip ; lip reflected, not dentate or in- 

 cised, parietal tooth, a long lamina running parallel with it. 

 Dark horn color, epidermis striate, hirsute, forming cilia on the 

 periphery. 



Diam. 10, height 6 mill. 



North West Georgia. 



Like the other carinate Stenotremce, this is a mountain species, 

 and inhabits the same region. It is readily distinguished from 

 its allies by the absence of a lip notch. 



DiEDALOCHILA, Beck. 



This is a very peculiar group, embracing quite a number of 

 species of subtropical distribution, most of the species occurring 

 in the southern Gulf States, and in Texas and Mexico; they 

 pass the Rocky Mountains, and appear on the west coast of 

 Mexico. Owing to the comparatively unexplored countries 

 which they inhabit, the species of Bcedalochila have generally 

 been only recently described, and it is not at all unlikely that 

 many additional ones remain to be characterized. 



In general appearance the species are very closely allied,. one 

 with another, and the difi^erences are generally found in the 

 teeth and shape of the aperturps. 



