1915.| NATURAL SCIENCES OF PHILADELPHIA. 329 
anatomical characters, which, though not great, seem to be constant 
in a considerable number examined, and which favor the more 
analytical treatment of the hachitana_group effected by Dr. Bartsch, 
—a view I formerly opposed. After examining many fresh specimens 
from both ranges, I separate the Florida and Hacheta Sonorellas 
subspecifically. : 
Whether the typical form of S. hachitana occurs outside of the 
Big Hachet range is doubtful. The Peloncillo range Sonorella 
(S. h. peloncillensis) is not easily distinguishable by the shell alone, 
but the proportions of the genitalia differ. 
On the Carrizolillo Mts., top of two peaks near the boundary 
line, numerous ‘‘bones”’ were collected by Dr. Mearns (No. 126,596, 
U. S. N. M.). They agree with S. hachitana in the rather wide 
umbilicus, small aperture and deeply descending last whorl, but 
differ by the average smaller size, from alt. 10.8, diam. 19.3 mm., to 
alt. 12.4, diam. 21.4 mm. It is apparently a small race of hachitana. 
The locality is about 30 miles east of Big Hachet Mountain. 
Specimens reported as S. hachitana from the Chiricahua Mountains 
will doubtless turn out to be one of the species already described 
from there. Several resemble hachitana more or less in the shell, 
but all differ in genitalia. 
The specimen reported from the Santa. Rita Mountains (No. 
105,385, U.S. N. M.) is dead and broken. It is not hachitana, but 
probably an undescribed species near S. clappi P. & F. 
Ashmunella mearnsii (Dall). Plate V, figs. 1 to 1b. 
Polygyra inearnsii Dall, Proc. U. S. Nat. Mus., XVIII, p. 2, 1895; XIX, 
pele43;, el. 32, figs. 7,8, 11, 1896: 
Up to this time A. mearnsii has been known from the original lot 
collected by Dr. Mearns about twenty years ago. We found it 
6 The figured type of A. mearnsii and nine specimens in various conditions 
of perfection are Cat. No. 130,012, U. 8. N. M., said to be from the Huachuca 
Mts. In the adult shells of this lot the parietal wall of the aperture is built up 
and disjoined from the preceding whorl. In another lot, No. 130,013, U.S. N. M., 
three specimens, Hacheta Grande Mt., the parietal callus is appressed. This 
difference in the parietal callus is exactly what we have noticed between the 
specimens from our Station 5 (near Dr. Mearns’s camp site) and those from 
our Stations 10 and 11, near and at the top of Hacheta Grande Mt., a place 
also visited by Dr. Mearns. We conclude, therefore, that there was a mistake 
of “Huachuca” for ‘‘Hacheta”’ in the label of No. 130,012; and that A. mearnsii 
does not really live in the Huachucas. This seems the more likely because in 
several camping trips to the Huachucas this species was not found. 
A record of A. mearnsi from the Organ Mountains, N. M., has been published, 
on the authority of Professor Cockerell. We have not seen the specimen, but 
suspect that they are A. kochi Clapp. 
We suggest that our Station 5 in the Hacheta Mountains be accepted as type 
locality for A. mearnsi. 
