558 REPORT OF NATIONAL MUSEUM, 1889 



Sciuridae. 



Sciurus niger Linn* Fox squirrel. Eastern United States, westward to the plains. 



Sciurus carolinensis Gmnlia.* Gray squirrel. United States. 



Sciurus fossor Peale. California gray squirrel. Pacific slope. 



Sciurus aberti Woodliouse. Tuft-eared squirrel. Southern Colorado, New Mexico, 

 and Arizona. 



Sciurus hudsonius Pallas. * Red squirrel ; Chickaree. North America generally. 



Tamia.8 striatus (Linn.). Chipmunk. Eastern United States. 



Tamias quadrivittatus (Say).* Missouri striped squirrel. Pacific slope, eastward to 

 Michigan. 



Tamias lateralis (Say).* Say's striped squirrel. Rocky Mountain region, from Mex- 

 ico northward. 



Spermophilus grammurus (Say).* California ground squirrel. Pacific coast to West- 

 ern Texas and New Mexico. 



Spermophilus harrisi Aud. and Bach. Harris's ground squirrel. The Great Basin. 



Spermojthilus leucurus Merriam. Lower California. 



Spermophilus franklini (Sabine). Gray gopher. Northern Illinois, northward to the 

 Saskatchewan. 



Spermophilu8 mohavensis Merriam. Mohave Desert. 



Spermophilus mollis Kennicott. Short-tailed spermophile. Utah and Nevada, north- 

 ward. 



Sjiermophilus neglectus Merriam. Arizona. 



Spermophilus tereticaudus Aud. and Bach. Round-tailed ground squirrel. Arizona. 



Spermoj)hilus tridccemlineatus (Mitchell).* Striped gopher; prairie squirrel. The 

 prairies of the United States. 



Spermophilus mexicanus (Erxleben). Mexican ground squirrel. Southwestern Texas 

 and southern New Mexico, southeastward into Mexico. 



Sjwrmojyhilus parryi Rich.* Parry's marmot. Northern parts of the continent, from 

 the northern States to Hudson Bay aud Bering Strait. 



Spermophilus spilosoma Bennett.* Sonora ground squirrel. Eastern base of the Rocky 

 Mountains north to western Wyoming. 



Sptermophilus cryplospilotus Merriam. Desert spermophile. Arizona. 



Spermophilus canescens Merriam. Arizona. 



Spermophilus richardsoni (Sabine). Yellow gopher. Plains of the Saskatchewan 

 southward to the upper Missouri. 



Spermophilus townsendi Bach. Townseud's ground squirrel. Plains of the Columbia. 



Cynomys ludovicianus (Ord). Prairie dog. Great plains east of the Rocky Mountains. 



Cynomys gunnisoni Baird. Short-tailed prairie dog. Souoran region. 



Cynomys leucurus Merriam. Wyoming. 



Arctomys monax Linn. Woodchuck. Eastern North America. 



Arctomys caligatus Eschscholtz. Hoary marmot. Rocky and Cascade Mountains 

 from Washington northward. 



Arctomys flaviventer Aud. and Bach. Yellow-bellied marmot. Rocky Mountains and 

 westward to the Pacific coast. 



Arctomys dacola Merriam. Dakota woodchuck. Black Hills, Dakota. 



Haplodontidae. 



Haplodon leporina Rich. Sewellel ; Showtl. Pacific slope (especially about Puget 



Sound). 

 Haplodon major Merriam. Sierra Nevada Showtl. Sierra Nevada Mountains. 



* The species of rodents marked with an asterisk run into numerous geographical 

 races. Descriptions of most of these will be found in the works of Drs. Cones and 

 J.A.Allen, especially in Monographs U. S. Geological Surrey, Vol. xi ; also among the 

 writings of Dr. C. H. Merriam, in North American Fauna, published by the U. S. De- 

 partment of Agriculture. 



