324 PKOCEEDINGS OF THE ACADEMY OF [May, 



locality had been burned over some years ago, and though the 

 shrubbery had re-established itself, we found no live snails. The 

 "bones" had been long dead. A more thorough search would 

 likely disclose live ones in the neighborhood, as fires usually leave 

 "islands" where such species may be preserved alive. Dead shells 

 were fairly plentiful. A careful conchological survey of this whole 

 range would probably prove profitable. Especially should Hemp- 

 hill's "haydeni," oquirrhensis and utahensis from this vicinity be 

 investigated. 



Sta. 15, south side of a gulch south of Sta. 14, nearly east of Morris, 

 under shrubbery and other vegetation about limestone ledges, 

 not under rocks. This locality had been very recently burned over 

 and the fire was still raging to the southward. We found numerous 

 examples of this species on the burned ground, in a crumbly con- 

 dition owing to the heat, but in a few small patches of brush 

 untouched by the fire we found about thirty live ones. It is not 

 improbable that the gulch where the fire was burning is the Hemp- 

 hill locality. 



The examples from Sta. 14 are old and much weathered, so that 

 the sculpture is obscure on most of them, but where preserved it is 

 the same as in those from Sta. 15, though the carina is not so pro- 

 nounced on the average, and they vary more in size and altitude. 

 This is a strongly carinated form, otherwise resembling Hemphill's 

 variety hydrida, from Logan. In the best specimens the revolving 

 riblets may be seen with the naked eye, with revolving threads 

 in the interspaces visible under a lens, the intersections of these rib- 

 lets and threads with the irregular transverse riblets, give to it a 

 knobbed appearance as seen under a lens. This sculpture is charac- 

 teristic of the haydeni group. The primary revolving riblets, six 

 or eight in number, are rather regularly spaced, especially below. 

 Most of our specimens are under 16 mm. in diameter, but the largest 

 one measured is 22 mm., and has two rather strong color bands, 

 one barely below and the other well above the periphery. 



The Provo District. 



Provo is south of Salt Lake City and at the base of the same range 

 of mountains, hence it is not surprising to find the same species 

 common here. Hemphill reported "typical strigosa and cooperi, 

 large and small," from this locality. Doubtless his strigosa was 

 depressa. 



