SPERMOPHILUS. 87 



Stripe on eyelids and on each side of back; under parts white. Tail, 



above grizzled gray tinged with fulvous; edge whitish; beneath white. 



Measurements. Total length, 226; tail vertebrse, 80; hind foot, 37. 



107. nelsoni. {Spermophilus), Merr. , Proc. Biol. Soc.Wash., 1893, p. 129. 



Type locality. Tipton, San Joaquin Valley, California. 



Geogr. Distr. Central California. 



Genl. Char. Similar to .V. Icucurus, but larger; above j^ellowish 

 brown. 



Color. Above yellowish brown; under parts whitish. Tail, 

 above basal third like back, rest black and white with white border, 

 beneath buffy white bordered with black, edged with white. 



Measurements. Average total length, 228.6; tail vertebr;e, 68.4; 

 hind foot, 40.4. 



C. Otosperraophilus. 



" Skull broad, molars small; edge of outer wall of anteorbital 

 foramen not thickened; coronoid processes of lower jaw long and 

 slender; ears very large, tail long, full, bushy." 



Fig. 19. Spermophilus (Otospermophilus) grammurus. 

 No. 2132 Field Columbian Museum Coll. Nat. size. 



