42 THE NAUTILUS. 
follow. In one colony of large Sonorellas about one in ten was 
an albino, beautifully modeled and with yellow lips. We 
worked here into a bank of clay and broken stone until we had 
a face to our mine high as our heads. The Sonorellas dwelt in 
the spaces between the clay and stone and at twenty feet in live 
Sonorellas were found. It was then dark and I had undermined 
a large Ocotillo that rolled me over and left a bump on my head 
for this summer. Again we had trouble in finding Sonorella 
dalli Bartsch, at Garden Canyon (Tanner’s) in the Huachucas. 
Here we followed a wide crevice in the limestone filled with ~ 
soil. Ata depth of about two feet we followed crevices a couple 
of times and found over seventy alive. The sixty Sonorellas at 
Duquesne and as many red Sonorellas in Miller Canyon were 
found in like manner. In Brown Canyon at the foot of a high 
cliff of limestone dead shells were abundant. Accidentally a 
scale of the cliff was torn off, and here was the live Sonorella 
granulatissima latior, we were looking for, with Oreohelix and 
Ashmunellas. 
About this time we admired our skill. After these many 
years, one of us said, we have become 100 per cent. shell 
collectors. On my first journey to Arizona I had raked over the 
leaves and turned logs and stones lying on the soil. I walked 
through the grand Tanner Canyon cms past these rich 
Sonorella mines. 
But to follow this mutual admiration convention, we did not 
find live Oreohelix in the Mustangs though dead shells covered 
the ground and crowded the rock slides. Here however the 
limestone cliffs did not scale. They were cracked apparently 
from one side to the middle, or the other side. 
We made two trips to the Whetstones before finding a shell 
of any kind. We thought we knew whether a mountain had 
shells or not by merely looking at it. On the third trip a long 
slide facing east was discovered. This had a great abundance 
of the most delicate and artistically constructed Sonorella so far 
identified. All were dead except a few less than half grown. 
The colony had been destroyed by some insect that had evi- 
dently dissolved the lime with some of its juices, making a 
hole in the shell large enough to crawl in and eat’em up. The 
