1917.| NATURAL SCIENCES OF PHILADELPHIA. 105 
VALLONIIDA. 
Vallonia perspectiva Sterki. 
Silver Creek, Station 9, elevation 8,000 feet, in the forest zone, 
and above its usual range. Much lower down it was taken at Staton 
42, Black Canyon, about 4 miles below the crest; in drift of the 
Middle Percha below Kingston; Station 54, on Little Palomas Creek, 
and in the Cuchillo Mountains. 
Vallonia cyclophorella Ckll. 
On the crest at stations 164, 39, and 47. 
FERUSSACIDA. 
Cochlicopa lubrica (Mill.). 
Found sparingly but generally spread throughout the Black 
Range, from Silver Creek to Black Canyon; also on lower levels at 
Station 1, Kingston, Little Palomas Creek, Cuchillo and San Mateo 
Mountains. 
SUCCINEIDA. 
Succinea avara Say. 
Station 1, Gallina Canyon; Middle Percha below Kingston. Not 
in the forest zone. 
; PHYSIDA. 
Physa sp. undet. 
Middle Percha Creek, Kingston; Animas River near Junction of 
Cherry Creek; both in the eastern foothills of the Black Range. 
CoLLECTING STATIONS IN THE Buack RANGE. 
Many of the stations are plotted on the maps, pp. 84 and 85; most of the others 
may be located by their relation to those plotted. 
1. Middle branch of Gallina Creek about 2 miles above Pryor’s upper cabin. 
2. Same, 4 miles above cabin, at’ the fork. 
3, 4. Limestone ledges on north and south sides of Silver Creek, a few hundred 
yards above Mitchell Gray’s cabin (7,500 feet). 
1 Silver Creek just below the “box,” where the trail makes a detour. 
. Silver Creek above the box, on north side, near a deserted cabin. 
. Silver Creek, north side, a short distance above Station 5. 
. Silver Creek, north side, above the preceding. 
. Saddle above the head of Silver Creek. 
. South side of the ‘“‘box”’ of Silver Creek. 
10. Gulch tributary to Silver Creek on north side, near Strohm’s ‘mine.”’ 
11, 12. Gulch tributary to Silver Creek, about a mile south of Gray’s cabin, 
and not far from the same elevation. 
121, About a half mile above Spade’s cabin, on Little Gallina Creek. 
13. Branch of the head of Spring Creek (Bul! Top Creek ?). 
15. Outerop of limestone on east side of Spring Creek, where a small ravine enters 
from the east. 
16. Iron Creek, where a ravine with numerous prospect holes enters from the 
south, between confluence of Spring Creek and Wright’s cabin. 
164. Wright’s cabin, near the head of Iron Creek. 
OMNIA 
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