138 PEROMYSCUS. 



Geogr. Distr. Coast region of California. 



Genl. Char. Size large, tail long; ears large, sparsely haired. 



Color. Above dark gray mixed with light brown; sides fulvous; 

 under parts grayish buff. Tail, blackish brown above, whitish below. 



Measurements. Total length, 265: tail vertebr;p, 142; hind foot, 

 28; ear, 26. 



187. insignis. {Feroiiiyseus), Rhoads, Proc. Acad. Nat. Scien. Phil., 



1895, P- 33- 



Type locality. Dulzura, San Diego County, California. 



Geogr. Distr. Southeastern California. 



Genl. Char. Size large; tail very long, exceeding head and body. 



Color. Above light brownish gray, mingled with black, darkest 

 on back; brownest on rump and thighs; flanks ochraceous; feet and 

 under surface grayish white. Tail above sooty, below grayish white. 



Afeasurenients. Total length, 233; tail vertebrae, 132; hind foot, 

 26; ear, 23. 



188. dyselius. {Peromyscus), Elliot, Pub. Field Columb. Mus., i8g8, 



I, p. 207, Zoology. 



Type locality. Partola, San Mateo County, California. 



Geogr. Distr. Coast region of California south of San Francisco. 



Genl. Char. Similar to P. californicus, but smaller; skull with 

 frontals considerably restricted at orbits and palate narrow. 



Color. Above black interspersed with buff; head and neck gray- 

 ish buff; flanks pale buff with a lateral line of bright buff; orbital ring 

 black. Under parts white, with a fulvous spot on breast of the 

 majority of specimens. Tail long as head and body, hairy and 

 tufted, dark brown above, yellowish white beneath. Ears large, 

 black. Feet and legs grayish white sometimes tinged with buff. 



Measurements. Total length, 193; tail vertebra?, loi : hind foot, 

 26; ear, 23.5. 



189. robustus. (Sitoniys), Allen, Bull. Am. Mus. Nat. Hist., 1893, 



P- 335- 



Type locality. Mus. Stanford University, Palo Alto, California. 



Geogr. Distr. Not known. 



Genl. Char. Similar in color to P. t. gan/fieli, but very much 

 larger. Ears moderate; tail shorter than head and body. 



Color. Above dull yellowish brown mixed with black, darkest 

 on median line; feet and under parts white. Tail dusky brown 

 above, white beneath. 



Measurements. Total length, 174; tail, 73; hind foot, 21; ear, ig. 



190. floridanus. {Hesperomys'), Chapman, Bull. Amer. Mus. Nat. 



Hist., 1889, p. 117. 



