326 PROCEEDINGS OF THE ACADEMY OF [May, 



in the same magazine in January, 1890, the reference to Binney's 

 figure seeming to make it a good description, thus antedating carnea 

 by five months. 0. var. carnea is not a well-marked variety, and 

 the question of making it a subspecies, or a mere color variety, or 

 rejecting the name altogether, may be purely a matter of opinion, 

 but it is not quite typical depressa. 



Hemphill records "typical strigosa and cooperi, both large and 

 small," from near Salt Lake City. 



The Ogden District. 



Oreohelix strigosa depressa (Ckll.). 



Sta. 20, about eight miles up Ogden Canyon, east of Ogden, in 

 rock slide below a limestone ledge at southwest end of a railroad 

 bridge, south side of creek. Large, fine specimens, abundant, 

 strongly banded, some measuring over 26 mm., a few very dark- 

 colored. Professor Cockerell says this is the sort of snail he called 

 "form major." 6 



Sta. 21, north side of creek, \ to \ mile below Sta. 20, under moun- 

 tain maples, a few large specimens, up to 26 mm., and up slope in 

 rock slide, the same form abundant, but averaging smaller, about 

 21 mm. 



Sta. 22, south side of creek, half a mile further down, in slide of 

 limestone and a micaceous rock, same subspecies, large, exceedingly 

 abundant. Also half a mile further down under similar conditions. 

 Dr. Pilsbry says of the Oreohelix from this station. "This lot is 

 representative of a race of strigosa slightly differing from depressa 

 in anatomy. The shells seem to me to differ by being less sharply 

 striate, but were it not for the genital difference I would probably 

 not have noticed this." A later letter, however, says that two lots 

 afterwards examined seem intermediate, so that the argument from 

 the anatomy is weakened, and there is no appreciable difference in 

 the shell characters. The same anatomical differences he noted for 

 stations 7, 10 and 13, near Tooele. 



Sta. 23, further down creek on south side, opposite thick deposit 

 of consolidated Quaternary gravel, in gneissic slide rock and adjacent 

 bushes, with limestone showing far up slope at top of canyon wall, 

 from which the wash is down over the slide. The same subspecies 

 of Oreohelix, abundant, mostly rather high-spired. 



At Sta. 22 we found also one of each of the following species : 



6 See Nautilus, III, 102. 



