1874.] 287 [Allen. 



c. var. ludovicianus. 



Sciurus ludovicianus Custis, Barton's Med. and Phys. Journ., n, 43, 



1806.— Baird, Mam. N. Am., 251, 1857. 

 Sciurus macroura Say, Long's Exped., I, 115, 1823. 

 Sciurus magnicaudatus Harlan, Faun. Am., 178, 1825. 

 Sciurus texianus, subauratus and Auduboni Bachman, Proc. Zool. Soc. 



Lond., vi, 86, 87, 97, 1838. 

 Sciurus occidentalis Aud. and Bach., Jour. Acad. Nat. Sci. Phila., 



vin, 317, 1842. 

 Sciurus rubicaudatus and Sayi Aud. and Bach., Quad. N. Am., n, 30, 



274, 1851. 

 Sciurus limitis Baird, Proc. Acad. Nat. Sci. Phila., vn, 331, 1855. 

 Hab. Mississippi Basin, west to the Plains. 



2. Sciurus carolinensis. 



a. var. carolinensis. 



Sciurus carolinensis Gmelin, Syst. Nat., I, 143,. 1788. — Baird, Mam. 



N. Am., 256, 1857. 

 Sciurus cinereus Schreber, Saugt., IV, 766, 1792 (nee. Linn.). 

 Hab. Southern Atlantic and Gulf States. 



b. var. leucotis. 



' ' Sciurus pennsylvanicus Ord, Guthrie's Geog., (2d Am. Ed.,) n, 292, 



1815." 

 Sciurus niger Godman, Am. Nat. Hist., II, 136, 1826. 

 Sciurus leucotis Gapper, Zool. Journ., v, 206, 1830. 

 Sciurus fuliginosus Bach., Proc. Zool. Soc. Lond., vi, 96, 1838. 

 Sciurus migratorius Aud. and Bach., Quad. N. Am., I, 265, 1849. 



Hab. United States east of the Plains, except the South Atlantic 

 and Gulf States. 



3. Sciurus fossor. 



Sciurus fossor Peal, Mam. and Birds U. S. Exp., 55, 1848. 

 Sciurus Hermanni Leconte, Proc. Acad. Nat. Sci. Phila., v, 149, 1852. 

 Hab. Pacific Coast, from the Columbia River to San Diego; only 

 west of the Cascade and Sierra Nevada Mountains. 



4. Sciurus Aberti. 



Sciurus dorsalis Woodhouse, Proc. Acad. Nat. Sci. Phila., vi, 110, 

 1852 (nee Gray). 



