282 



BULLETIN 56, UNITED STATES NATIONAL MUSEUM. 



car-, feet, inner surface of limbs, and all of under surface of body 

 orange-buff. Tail grizzled above, in the median area, with broad, 

 lateral, subterminal bands of black and broad 

 yellowish white tips to the hairs; under side of 

 tail tricolored, orange-buff mesially, this bor- 

 dered successively by black and yellowish white. 

 The naked under surfaces of the feet are pur- 

 plish black. Length, 17r> mm.; tail to end of 

 vertebrae, 225; tail to end of hairs. :'»()(); ear from 

 crown. 18; ear from notch. 30; head, 67; hind 

 foot. 66. 



Cranial characters. — This species has but one 

 premolar on each side, above. Skull in texianus 

 (fig. 45) low, with a weak rostrum; superior 

 profile flattened in the frontal region, sharply 

 declining posteriorly; postorbital processes of 

 ter texiams. dorsal medium length and sharply deflected; audital 



view of ski]. i.. Fort . .. ,, . . . « , , 



Clark, Texas. (Cat. No. bulla*, small; incisive foramen, long and nar- 



12710, Amer. Mus. Nat. row ; interpterygoid fossa, long, nearly equal- 

 • ing the length of the upper lateral tooth-row. 

 Greatest length of skull. 61 mm.; greatest breadth, :'>.'>. 



Remarks. — The color of the under surface fades with wear and 

 exposure until it becomes nearly white, and 

 its intensity is also subject to some individ- 

 ual variation. On the whole, the form is re- 

 markably uniform. No black individuals 

 were seen or heard of. though the fox squir- 

 rel of northeastern Texas is frequently mel- 

 anistic. Dr. J. A. Allen" mentions a speci- 

 men from Rockport, Aransas County, Texas, 

 "not appreciably different from speci- 

 mens from the type locality (San Pedro or 

 Devils River) of Baird's Sciurus limitis 

 (=texianus), recently received from Dr. E. A. 

 Mearns." 



An adult female (Cat. Xo. 6304&, U.S.N.M.) 

 from Kickapoo Springs, Mason County. 

 Texas, has five pairs of mammae. 



Habits and hxul distribution. — On January 

 31, IS')--!. I noted a line fox squirrel, seen in a 

 bit of woods along the railroad between the 

 southern border of Indian Territory and Fort Worth, Texas. 1 

 afterwards found it abundant in pecan woods along most of the ■ 



Fig. 46.— Sciurus rufivi nter. 

 Dorsal view OF SKI U . 

 West Northfield, Illinois. 

 Cat. Xo. 1879, C.S.N.M.) 



« Lull. Am. .Mus. Nat. Hist.. VI, L894, p. 183. 



