104 PROCEEDINGS OF THE ACADEMY OF [March, 
Black Range, abundant in the forested zone, chiefly among aspens. 
Type locality, Station 39, around the cattle-trap and lake between 
McKnight’s and Mimbres forester stations. 
It was taken at stations 5, 9, 163, 17, 26, 28, 30, 31, 38, 34, 37, 
39, 42 and 47, well scattered over the ridge and upper slopes from 
Sawyer Peak to Black Canyon. Single bleached shells were taken 
in the drift debris of Gallina Creek at Station 1, and in the debris of 
Middle Percha Creek below Kingston. These were doubtless 
carried down from the forest zone by freshets. 
This is relatively wider and shorter than P. blandi, with a far less 
developed crest behind the lip. Typical P. blandi is a decidedly 
smaller shell. 
Pupoides marginatus (Say). 
A bleached shell was found in drift of the Middle Percha Creek 
below Kingston, therefore in the foothills rather than the Black 
Range itself. 
Gastrocopta pellucida hordeacella (Pils.). 
Middle Percha Creek, below Kingston. Not found in the moun- 
tains. 
Gastrocopta pilsbryana (Sterki). 
Not uncommon on top. It was taken at 8 stations between Silver 
Creek and McKnight’s ranger cabin. Also on Mineral Creek, 
near the Oliver Mine, Station 52, and in the Cuchillo Mountains. 
Gastrocopta ashmuni (Sterki). 
Stations 16, Iron Creek, and 54, Little Palomas Creek, a single shell 
at each. The former station, probably above 7,500 feet, is unex- 
pected, and above its usual zone in this part of New Mexico. 
Gastrocopta quadridens Pils. 
Stations 163, Iron Creek near Wright’s cabin, and 28, south side 
of Hillsboro Peak. 
Vertigo coloradensis arizonensis P. and V. 
Taken at 10 stations along the range, above 7,500 feet, and doubt- 
less to be found in the forest zone wherever minutiz are looked for, 
especially among aspens. 
Vertigo modesta n. subsp. 
This new subspecies will be described in the next paper of this 
series. It was taken in the Black Range at stations 1, 9, 163, 24. 
26, 28, 30, 34, 39, 47. 
