506 



PROCEEDINGS OF THE ACADEMY OF 



[Nov.. 



varicose cylindric body, while in chiricahuana the duct is extremely 

 long, swollen at the end. The proportions vary widely in the two 

 species, as follows : 



A. varicifera. A. chiricahuana 

 Length of penis, epiphallus and flagellum, 37 to 44 mm. 73 mm. 

 Length of spermatheca and duct, . . . 25 to 27 " 56 " 



Length of vagina, 4 to 5 " 9 '" 



The size of the shells is about equal. It appears from this that 

 A. varicifera is a simplified member of the A. levettei stock, while 

 A. chiricahuana belongs to another group of species. 



The type locality of A. chiricahuana is Fly Park, Chiricahua Moun- 

 tains. 



Extract from Mr. Ferriss' Field Notes. — On the Cave Creek side we 

 found A. varicifera larger than the lot from Wickersham's Rock on 

 the peak, and generally albino. Out of one hole containing 29, only 

 two were dark colored. On the other side of the east fork of Cave Creek 

 they were larger but all dark. On the south side of the range there is 

 a strong tendency to albinism in the Ashmunellas, Sonorellas and 

 Oreohelix. 



Ashmunella miorodonta a. sp. Fig. 5. 



The shell resembles A. varicifera in general appearance, but differs 

 by having fewer whorls, the last wider viewed from above; umbilicus 

 much wider, exposing more of the penultimate whorl. The lip is 

 toothless except for a very low vestige in tne basal margin in some 

 specimens; but there is a minute tubercular parietal tooth in over 



Fig. 5. Asmunella microdonta. Cotype. 



half of those examined, while it is perceptible as a faint thickening 

 in all. The shell is chestnut colored, usually with one or two varix- 

 streaks on the base; lip white or with its upper half reddish-brown. 



Alt 9.5 8.6 8.8 8.2 mm. 



Diam 20 19 19 17 



Whorls 5i 5i 5 J 5$ " 



