194 FIELD COLUMBIAN Mi SEIM ZOOLOGY, VOL. i. 



These specimens were taken in the latter part of August, 

 during September and beginning of October, and only two, pro- 

 cured towards the latter part of September, have any indication 

 of chestnut behind the ears. The, backs are uniform bluish gray 

 and black, presenting a grizzled appearance, and the feet are a 

 pale gray with little of this bluish tinge, and are white or inclining 

 to white over the outer edges. This species is apparently dis- 

 tributed in the interior, and replaced along the coast, and in the 

 Southern part of the State by the following subspecies. 



2. Sciurus fossor nigripes. 



Sciurus fossor nigripes. Bryant, Cal. Acad. Scien., 1889, p. 25. 



Ten specimens. i, Carmel, Monterey Co.; i, Mt. Hamilton, 

 Santa Clara Co., and 8 from San Antonio, San Bernardino Co. 



This is apparently a well marked race of the previous species 

 and is easily recognizable by the black feet and the yellowish- 

 brown back. All the specimens were procured in June, except 

 the Mt. Hamilton one, which was taken in August and which 

 has a conspicuous chestnut mark behind the ears, while of the 

 San Antonio's examples two have the merest traces of it, and one 

 only fairly shows it. In general measurements the two forms are 

 practically the same. 



3. Sciurus hudsonicus californicus. 



Sciurus hudsonicus californicus. Allen, Bull. Am. Mus. Nat. 

 Hist., vol. iii, 1890-91, p. 165. 



Ten specimens of this sub-species are in the collection, taken 

 in the months of July, August and September, i from the Snow 

 Mountains, Calusa Co. ; i from Hermit Valley, Calaveras Co. ; i 

 from Echo, Eldorado Co. ; 2 from Pyramid Peak, Eldorado Co. ; 

 i from Woodford, Alpine Co., and 4 from Silver Lake, Amidor 

 Co. 



These examples are interesting as not only showing the dif- 

 ferent pelages assumed at certain seasons of the year, but also 

 exhibiting how late in the summer some individuals change. 

 All, except the Silver Lake examples, are in the summer coat 

 with the bright buff feet and streak along the thighs, and the 

 buff, or white underparts, this last appearing in August and 

 September. The Silver Lake specimens on the other hand, 

 although some of them were procured as late as Julyfth, are still in 

 the winter coat, considerably worn, with the feet dark gray, with 



