SYLVILAGUS. 113 



Genl. Char. Similar to L. f. malhurus, but paler; skull larger, 

 rostrum thicker; bullas larger. 



Color. Upperparts pale sandy fulvous; underparts white; back 

 of hind legs dark chestnut; front white; ears dark brown. Ex type 

 in United States National Museum. 



Measurements. Total length, 477; tail, 70; hind foot, 97; ear from 

 crown, 72. Skull: Occipito-nasal length, 76.8; Hensel, 57.2; zygomatic 

 width, 37.1; intertemporal width, 20.9; median length of nasals, 2.62; 

 length of upper molar series, 14.4; length of mandible, 53.3; length of 

 lower molar series, 14.5. Ex type in United States National Museum. 



Sylvilagus floridanus similis Nelson. 



Sylvilagus floridanus similis Nels., Proc. Biol. Soc. Wash., XX, 

 1907, p. 82. 



Type locality. Valentine, Nebraska. 



Geogr. Distr. Dry plains (mainly along wooded streams) of 

 extreme western Minnesota, eastern North and South Dakota, all of 

 Nebraska (except possibly the Missouri bottomlands), northern 

 Kansas, northeastern Colorado, along tributaries of Platte River to 

 base of mountains near Denver and southeastern Wyoming. Vertical 

 range from about 1500 feet in northeastern Nebraska to over 5000 feet 

 west of Denver, Colorado. Zonal range, mainly upper Sonoran. 



Genl. Char. Size small; color pale; ears short; skull small. 



Color. Top of head pale pinkish buff; sides of head grayish, 

 tinged with black; back pale pinkish buff mixed with black; shoulders 

 washed with gray; patch on rump iron gray; nape pale rusty rufous; 

 front and outer side of forelegs pale rusty rufous; outer side of hind 

 legs dull cinnamon, outer side of hind feet paler; top of forefeet pale 

 pinkish buff, of hind feet white; tail above dusky gray; underside 

 of neck pinkish buff, rest of underparts white with a pale buff band 

 on lower part of flanks ; ears on outer side grizzled gray bordered with 

 black on front and at tip, inside grayish white. Ex type in United 

 States National Museum. 



Measurements. Total length, average 5, 408; tail, 52; hind foot, 

 99; ear, 50. Skull: Occipito-nasal length, 70; Hensel, 53.2; zygo- 

 matic width, 35.6; intertemporal width, 11.5; length of nasals, 26.8; 

 palatal length, 8.2; length of upper molar series, 13.5; length of man- 

 dible, 37.1; length of lower molar series, 14.1. Ex type in United 

 States National Museum. 



Sylvilagus floridanus restrictus Nelson. 



Sylvilagus floridanus restrictus Nels., Proc. Biol. Soc. Wash., XX, 



1907, p. 82. 

 Type locality. Zapotlan, Jalisco, Mexico. 



