Geogr. Distr. Minnesota forest belt. Range unknown. 



Genl. Char. Size large; pelage dark, only small white streak on 

 belly. 



Color. Upper parts dark iron gray mixed with yellow and rusty, 

 under parts similar to back with a central white streak on belly; some- 

 times the chest and neck beneath are yellowish brown; tail iron gray; 

 ear tufts in winter yellowish white. 



Meaaurctnents. Total leniith about 496; tail vtrtebra-, 220; hind 

 foot, 07. 



c.—fitli^inosus. {Sciurus)^ Bachni. Proc. Zool. Soc, 1838, p. 96. 



7\p( locality. New Orleans, Louisiana. 



Geogr. Distr. Coast region of Louisiana. 



Genl. Char. Size large; under parts never pure white, tail only 

 slightly tipped with white. 



Color. Upper parts yellow ferruginous varied with black; tail 

 dark, subapical band broad, and white tip narrow: under parts from 

 buffy ferruginous to smoke gray. 



Measurements. Total length, 467; tail vertebra', 219; hind foot, 67. 



d.—extimus. (Seiurus), Bangs, Proc. Biol. Soc. Wash., 1896, p. 158. 



Ty/>e locality. Miami, Dade County, Florida. 



Geogr. Distr. South Florida. 



Genl. Char. Smallest of S. carolinensis series; color light; tail 

 short. 



Color. Upper part yellowish gray; tail light gray; under parts 

 white; ear tufts white. 



Measurements. Total length, average, 438.4; tail vertebra", 190; 

 hind foot, 47. 



0. Hesperosciuras , Nelsou. 



Premolars, ^. Skull large, long and broad, especially across 

 parietal region, where the brain case is depressed; zygomatic process 

 of squamosal horizontal, arch obliquely ascending but less than in 

 Neosciiirus. Rostrum deep; nasals long, broad anteriorly and ending 

 on a line with the premaxillaries posteriorly. Molar series very heavy. 



74. £;riseu5. {Sciurus), Ord, Guth. Geog., 1815, p. 292. 



fossor, Peale, U. S. Expl. Exped., Mamm. and Birds, 1848, p. 55. 



hermanni. LeConte, Proc. Acad. Nat. Sci. Phil., 1852, p. 149. 



leporinus, Hensh. Ann. Rep. Engin., 1876, p. 25. 



Type locality. Southwestern Washington, western Oregon, Cali- 

 fornia. 



Geogr. Distr. Northern California. Oregon and Washington. 



Genl. Char. Size large; tail vertebra; as long as body and head. 

 Upper molars, five. Skull long, broad, rostrum broad, deep. 



