1916.] natural sciences of philadelphia. 353 



Catalogue of species, subspecies, and other named forms. 



Note. — An asterisk (*) following a specific or varietal name indi- 

 cates that a figure of the genitalia has been published by the writer, 

 and serves to show what species and subspecies require examination. 

 Several other subspecies of the Arizonian species have been dis- 

 sected but not figured. 



0. idahoensis (Newc). Coeur d'Alene district, Idaho. 

 O. cooperi (W. G. B.).* Black Hills, S. Dakota; (Rocky Mountains). 

 Forms trifasciata Ckll., Mesa Co., Colo.; confluens Ckll., Gar- 

 field and Mesa Cos., Colo.; elevata Ckll., Delta Co., Colo.; 

 typica Ckll., Colo.; minor Ckll., Rouett Co., Colo.; iowensis 

 Pils., Loess of Iowa; maxima Pils.,* Yellowstone Park. 

 0. c. stantoni Dall. Assiniboia. 



0. c. globosula Ckll. Summit Co., Colo. (Syn. globulosa Pils.). 

 0. c. berryi Pils. Snowy Mts., Fergus Co., Mont. 

 0. rugosa (Hemph.).* Near Brigham City, Utah. 

 O. peripherica ( Ancey) . * Bear River region, Northern Utah. (Syn. , 

 multicostata, Hemph.) 

 Forms binneyi, castanea, albofasciata, gouldi Hemph. 

 0. p. newcombi (Hemph.). Near Ogden, Utah. 

 0. p. wasatchensis (Hemph.). Near Ogden, Utah. 

 0. pygm.ea Pils. Near Shell, Wyoming. 

 O. strigosa (Gld.). "Interior of Oregon." 



0. s. parma (Hemph.). Spokane Falls, Washington. 



0. s. jugalis (Hemph.). Salmon River, Idaho. 



0. s. intersum (Hemph.). Salmon River, Idaho. 



0. s. limitaris (Dawson). Waterton Lake, Montana-Alberta 



boundary. 

 0. s. alpina Elrod. Mission Range, Montana. (Svn. : montana 



Elrod.) 

 O. s. subcarinata (Hemph.). Rathdrum, Idaho. 



Forms lactea, bicolor and picta Hemph. Same colony. 

 O. s. depressa (Ckll.).* Near Durango, Colo.; (Southern Idaho 

 to northern Arizona, Colo., New Mexico). 

 Form major Ckll. Mesa Co., Colo. 

 " sinistrorsa Ckll., Colorado. 



cornea Hemph.* Near Salt Lake City, Utah. 

 albida Hemph. Near Logan; Utah. (? Syn., Patula 

 strigosa var. alba Ckll., preoc). 

 " tooelensis Hend. and Dan.* Near Tooele, Utah. 

 0. s. fragilis (Hemph.).* Near Franklin, Idaho. 

 0. s. buttoni (Hemph.).* Box Elder Co., Utah; also near 



Ogden. 

 0. s. magnicornu Pils. Big Horn Mts., Wyoming. 

 0. hendersoni Pils.* Little Thompson Creek, 10 miles N. W. of 

 Longmont, Colo. 

 0. h. dakani Hend. New Castle, Colo. (? = rugosa Hemph.). 



