1909.] NATURAL SCIENCES OF PHILADELPHIA. 511 



the canyon; Brown's Canyon; Limestone Mountain, 9,000 feet; 

 Ramsey Canyon ; also over the range on the f oothills of Bear Canyon at 

 about 5,000 feet, where it is very widely separated from other known 

 localities, and very small, diam. 9.5 to 11 mm. 



The race from Carr Canyon is intermediate between angigyra and 

 levettei in size and shape of the last whorl. The examples from Lime- 



Ashmunella levettei angigyra. Cotype. 



stone Mountain and Salvation Ridge approach those of Carr Canyon 

 in size and apertural teeth, and would probably be grouped with that 

 race rather than with typical angigyra, if the two be separable. 



A. I. angigyra is the common and widely distributed Ashmunella 

 of the Huachucas. The other forms are very local. 



The epi phallus is curiously flattened, dumbbell-shaped in section 

 in several individuals (alcoholic) from east fork of Salvation Canyon, 

 and the lower part of the spermatheca duct is slender. 



Ashmunella mearnsi (Dall). 



Polygyra mearnsi Dall, Proc. U. S. Nat. Mus., XVIII, 1895, p. 2 (Hachita 

 Grande and Huachuca Mountains) ; XIX, 1896, p. 343, pi. 32, figs. 7, 8, 11. 



This species was described as from two widely separated localities. 

 It differs from all other Huachucan species by having fewer, less closely 

 coiled whorls. In these features it belongs to a small group of forms 

 from southwestern New Mexico, composed of A. walker i Ferriss and 

 A. kochi Clapp. We have much to learn about the snails of these 

 alluring desert mountains, but it seems likely that there was a mistake 

 in the locality Huachuca Mountains, and that the species really came 

 from the Hacheta Grande Mountains only. 



Genus OREOHELIX Pilsbry. 



The Huachucan Oreohelices have been described and illustrated 

 as fully as possible to us in the first paper of this series. 

 Oreohelix strigosa concentrata (Dall). 



Carr Canyon, 7,000 feet ; Limestone Mountain, 8,000 feet ; Miller Peak, 

 Ash Canyon. The shells from Miller Peak are rather openly umbilicate 



