1917.] NATURAL SCIENCES OF PHILADELPHIA. 69 



island perhaps twenty-five miles in length during the maximum 

 expansion of ancient Lake Bonneville. Hague's^^ discussion is 

 quoted at length by Butler and Heikes,-" with additional information, 

 in a recent bulletin. The isolation of the range and the presence of 

 large bodies of limestone, brush and trees lead us to believe that 

 systematic w^ork there would produce interesting results, but our 

 time was limited and the single day spent at the extreme southern 

 end was disappointing. The only moUusks we saw were Vallonia 

 cyclophorella Ancey and Pupilla blandi (Morse), under small bushes 

 in rock slides at Sta. 107, an isolated limestone butte close to the 

 railroad station of Saline. This butte was either covered by the 

 waters of Lake Bonneville or formed only a tiny rocky island. The 

 vegetative cover across the southern slope of the range is everywhere 

 too scant for the larger snails. 



Morgan and Devil's Slide District, Utah. 



Oreohelix haydeni (Gabb) was described from material said to 

 have been obtained in ''Webber" Canyon, Utah.-^ We have not 

 been able to learn of any canyon bearing that name, and are assured 

 by men long and well acquainted with Utah that the well-known 

 Weber Canyon is the one intended. Unfortunately, that name has 

 been sometimes used to designate the whole valley of the Weber 

 River and its larger tributaries. It is quite desirable to find this 

 species alive in the type locality or elsewhere, in order to ascertain 

 the anatomy. In 1915 we searched for it in what is more properly 

 called Weber Canyon, below Gateway, without success. In 1916 

 W'e made two trips to the upper canyon, above Morgan, without 

 success so far as typical haydeni is concerned, but found other 

 interesting forms. Between Morgan and Gateway, a broad valley, 

 with canyons entering from both sides, and the whole canyon south 

 of Echo22 afford a large field as yet wholly untouched. Binney's^^ 

 report of live haydeni received from Hemphill is incorrect, as Hemp- 

 hill did not find true haydeni, though much of his material from the 

 Oquirrh Mountains was sent out under that name, 



Sta. 47, gulch on north side of valley, about half a mile north of 

 Morgan depot. Oreohelix peripherica (Ancey), the binneyi (Hemph.) 

 form, small, from 11 mm. to 16 mm. in diameter, mostly rather 

 depressed, a very few showing one or two spiral color bands. 



" Hague, U. S. Geol. Explor. 40th Parallel, vol. 2, pp. 420-423. 

 20 Butler and Heikes, U. S. Geol. Surv., Bull. No. 640-A, pp. 1-6. 

 2iylmer. Journ. Conch., V, p. 24, PL 8, fig. 1. 



22 See Coalville Quadrangle topographic sheet, U. S. Geol. Surv. 



23 Terr. Moll. U. S., V., p. 159; Man. Amer. Land Shells, p. 1G7. 



