GUDE: GENUS SESARA, ALB., WITH TWO NEW FORMS. 1 43 



B. Aperture with one conical palatal tooth on basal margin, episema. 



C. Aperture with two palatal teeth. 



a. Teeth deeply seated : outer conical transverse, inner horse- 

 shoe-shaped, ataranensis. 

 1). Teeth on peristome, 



a. One on basal, one on columellar margin. 

 *Basal margin horizontal; base of shell flattened. 



hanneri. 

 **Basal margin descending, rounded; base of shell convex. 



jyirrieana. 

 (3. Both teeth on basal margin. 



*Shell 6 mm. diam. daghoha. 



**Shell 3 mm. diam. hidenticulata. 



D. Aperture with three palatal teeth ; one on columellar margin, two 



on basal margin. 



a. Teeth conical in a transverse row. 

 a. All on peristome. 



*Two on basal margin close together. infrendens. 



**Two on basal margin almost united. tickelli. 



***Three teeth sub-equal, equidistant. capessens. 



13. Inner tooth on peristome horizontal; outer two a little 

 more deeply seated; middle one oblique, outer trans- 

 verse, hungerfoi v Han a . 

 h. Two teeth on basal margin behind one another. 



a. Both horizontal. dijyiodo?!. 



f3. Anterior tooth horizontal, posterior one transverse. 



inrjrami. 



