30 BULLETIN OF THE 



" From Ogden I went to Salt Lake City, and thoroughly explored all the 

 canons, gulches, and other favorable places which I could reach in a day's walk. 

 This only resulted in the finding of the typical strigosa and Cooperi, both large 

 and small. 



" I next went to Provo, Utah, fifty miles soiith on the same range of moun- 

 tains, and there also I found only the typical strigosa and Cooperi, large and 

 small. 



" I then returned to Salt Lake City, and crossed the valley to the west, camp- 

 ing on the west side of a range called the Oquirrh Mountains. Here com- 

 menced a series of finds that was quite exciting and very interesting to me. 

 At the foot of the mountain my attention was attracted to a pile of detached 

 rock, usually a good place for snails. After a few moments' work among these 

 stones I was rewarded by finding quite a number of specimens of the variety I 

 call Utahensis. (See p. 33.) This has the form of Hemphilli, but is destitute 

 of the revolving ridges of Haydeni. The specimens were all constant in sculp- 

 turing, but varied very much in size and somewhat in form. I next went up 

 the side of the mountain a short distance to another pile of stones (limestone), 

 and here I found the variety I call Oquirrhensis. (See p. 34.) This has quite 

 prondnent revolving rib.s, more developed than in the typical Hemjyhilli from 

 White Pine, Nevada. This colony was also constant in sculpturing, but varied 

 very much in size, and also in form. I next went along the mountain side, and 

 crossed a little ravine, and commenced raking among the leaves and brush on 

 the steep slope of the mountain. Here I found a colony of the typical Haydeni, 

 constant in sculpturing, but as in the case of the other colonies, variable in size 

 and form. Following up this ravine to near the summit of the mountain, 

 I found a few isolated specimens of Haydeni under stones. Near the summit I 

 found two specimens of Cooperi. I then returned to the bushes where I found 

 Haydeni, and after some further work there passed along the side of the moun- 

 tain a very short distance to another ravine with low bushes covering its sides. 

 Here among the leaves I found a colony of the variety I call Gahhiana. (See 

 p. 34.) This is a coarse, rough Haydeni, with the revolving ribs nearly or 

 quite obsolete. This variety also maintained its peculiar sculpturing, but va- 

 ried again in size and form. Continuing my course along the mountain side, I 

 came to another ravine which I followed up a short distance to a perpendicular 

 precipice about fifty feet high, barring farther progress. At the foot of this 

 limestone wall I found another colony of one of the smaller forms, elevated like 

 Cooperi, with the revolving ribs nearly obsolete. Here, then, were five colonies 

 of the same species, apparentlj^, living on the same mountain slope, within a 

 short distance one of the other, each colony maintaining its peculiar sculptur- 

 ing, but varying in size and form. 



" In due time I returned to Salt Lake City, where I remained a few days to 

 prepare my specimens. 



" Eeturning to Ogden, I explored the mountains farther to the north than on 

 my first visit, which resulted in finding the variety I have called Newcomhi. 

 (See p. 32.) This colony I found living among bushes on the steep sides of a 

 gulch facing the north, a spot of continual shade. The specimens, both banded 

 and plain, were quite numerous ; but beyond the space of about fifty yards not 

 an individual could be found either above or below. I also found on a rocky 

 point two or three specimens of Haydeni, nearer Ogden, on the north side of 

 the city. 



" From Ogden 1 went to Brigham City, and quite thoroughly explored all 

 that vicinity. Here I found a colony of the small albino strigosa, with and with- 

 out the tooth on the peristome. This colony occupied a pile of rocks at the 

 foot of the mountain, shaded by bushes, dead leaves, and the debris washed 

 down the mountain. I did not find this variety elsewhere, nor was a single 



