132 



Patula solitaria, Say. — Ooeur d'Alene Mountains, 2,500 feet {Cooper, 

 Sempliill). 



Patula strigosa, Gould. — Western New Mexico to the Big Horn Mount- 

 ains of Nebraska [Binney and Bland)) Montana to Arizona {Cooper). 



Patula Hemphilli, Newc— White Pine, Nevada, 8,000 feet {Hemphill). 



Patula idahoensis, Newc.— Between Idaho City and Coeur d'Alene 

 Mountains {Hemphill). 



Patula Haydeni, Gabb.— Weber Canon, Utah {F. V. Hayden). Sub- 

 fossil only. 



Eemaeks. — " In the foregoing paper, the following species of Patula 

 are enumerated, viz : Cooperi, solitaria, strigosa, HempMlli, idahoensis, 

 and Haydeni. In form, these species are remarkably connected. 



" Patula Haydeni, which may be considered as extinct, is distinguished 

 by its carina and equally ' prominent, elevated, revolving ribs.' It is 

 allied to P. strigosa, and more especially to the carinated form described 

 as P. MempMlli. The non-carinated P. strigosa is variable, sometimes 

 difficult to be distinguished from depressed varieties of P. Cooperi. The 

 rather strongly-ribbed variety of the latter, from Bear Eiver, Utah, 

 connects P. idahoensis with this group. In some specimens of that 

 species, the obsolete carina may be observed on the periphery between 

 the strongly-elevated oblique (not revolving) ribs. The more globose 

 forms of P. Cooperi may be compared with P. solitaria. In the group 

 of species of Patula referred to, the alliances, indicated however by 

 the shells alone, are associated with well-marked specific differences in 

 the genitalia; in other groups, Tlfeso^ow, for instance, in the dentition. 

 Mr. W. G. Binney has lately directed attention to tins interesting 

 point."— Thos. Bland. Letter of March 16, 1875. 



Patula Rornii, Gabb. — Fort Grant, Arizona {Horn). 



Patula CronkMtei, Newcomb. 



Camp 9 : Hot Springs - 14 specimens. 



Camp 11 : Blue Eiver Yalley 20 specimens. 



Camp F : Eio La Plata 15 specimens. 



Eecorded from Klamath Valley, Oregon {Gahh) ; White Pine Mount- 

 ains, Nevada, and Northern Utah {Hemphill). 



Patula striatella, Anthony. 



Camp 9 : Hot Springs '..,... 20 specimens. 



Camp 19 : Saguache - 5 specimens. 



Camp 24 : White-earth Eiver 20 specimens. 



Montana? {Cooper); Hell-Gate Eiver, Montana {Binney aud Bland); 

 Estes Park, Colorado {Carpenter). 



Helix (Microphysa) Ingersollii, Bland, in MSS. 



Camp 26 : Baker's Park 25 specimens. 



Camp 26 : Cunningham Gulch, 11,000 feet 6 specimens. 



Camp D : Animas Valley 25 specimens. 



Eemarks. — This beautiful little shell was not found north of the crests 

 of the Sierras about Baker's Park, but was not uncommon on their south- 

 ern slopes, where I first found it clinging to vertical and all but inacces- 

 sible cliffs in Cunningham Gulch, at an altitude of over 11,000 feet, 

 exposed to daily snow-storms; yet these specimens were, if anything, 

 finer than those subsequently found along the Eio Las Animas. 



