1915.] 



LIST OF SPECIES AND SUBSPECIES. 



19 



group. Marmota marmota, the type of the genus, though widely 

 differing from the American species in the greater depth and convex- 

 ity of the cranium, resembles monax in the characters of the basi- 

 occipital, the shape of the postorbital processes, the relatively vvide 

 interorbital region, and the nearly parallel maxillary tooth rows. 

 Most of the Asiatic species, however, apparently are more closely 

 related to M. caligaia than to either of the other American groups. 

 The skulls of all American species, contrasted with those of the Eura- 

 sian species, show a marked flattening of the cranium, the dorsal 

 outline of the skull being decidedly more convex in practically all 

 Old World forms than in those of America. All the Eurasian species 

 differ also in coloration from the American forms. All the American 

 species possess a small rudimentary thumb bearing a flat nail — a 

 character present in most of the Asiatic species, but absent in M. 

 marmota of Europe. 



List of American Species and Subspecies, v/ith. Type Localities. 



Marmota monax group: 



Marmota monax monax (Linnaeus) Maryland. 



monax rufescens Howell Elk River, Minn. 



monax prehlorum Howell "Wilmington, Mass. 



monax ignava (Bangs) Black Bay, Labrador, 



monax canadensis (ETslobQ-D.) "Canada et ad fretum Hudsonis" — 



fixed at Quebec, Quebec. 



monax petrensis nobis Revelstoke, British Columbia. 



monax ochracea Swarth Head of Fortymile Creek, Alaska. 



Marmota Jiaviventris group : 



Marmota jiaviventris jiaviventris (Audu- 

 bon & Bachman) "Mountains between Texas and Cali- 

 fornia" — fixed on Mount Hood, Oreg. 



jiaviventris avara (Bangs) Okanogan, British. Columbia. 



jiaviventris sierrae nobis Mount "VvTiitney, Cal. 



jiaviventris parvula Howell Jefferson, Toquima Range, Nev. 



jiaviventris engelhardti Allen Beaver Mountains, Utah. 



jiaviventris nosophora Howell Willow Creek, 7 miles east of Corvallis, 



Mont. 



jiaviventris dacota (Merriam) Custer, S. Dak. 



jiaviventris luteola Howell Woods P. O. , Medicine Bow Mountains, 



Wyo. 



jiaviventris ivarreni Howell Crested Butte, Colo. 



jiaviventris obscura Howell Wheeler Peak, N. Mex. 



Marmota caligata group : 



Marmota caligata caligata (Eschscholtz) . Bristol Bay, Alaska. 



caligata vigilis Heller Glacier Bay, Alaska. 



caligata sheldoni Howell Montague Island, Alaska. 



caligata oxytona Hollister Head of Smok}^ River, Alberta. 



caligata ohanagana (King) Gold Range, British Columbia. 



caligata nivaria B.owell Mountains near St. Marys 'Lake, Mont, 



caligata cascadensis Howell Mount Rainier, Wash. 



Marmota olympus (Merriam) Olympic Mountains, Wash. 



Marmota vancouverensis Swarth Mount Douglas, Vancouver Island, Brit- 

 ish Columbia. 



