Mar. 1898. NORTH AMERICAN MAMMALS ELLIOT. 201 



dusky hind feet, the very dark color of the upper parts, and the 

 uni-color black tail. The throat, and a spot on the chest, and 

 the space between the hind legs is white to the roots of the hair. 

 It grades on the south through the subspecies I have called 

 annectens into N. micro/is Thomas, and on the east through another 

 subspecies, affinis, described below, into N. f. streatori, Merriam. 

 There is much individual variation in the skulls of different 

 examples, and I do not feel at all satisfied that there is any 

 cranial character that can be cited which in all cases, or indeed 

 in most of them, would serve to identify the species. I would 

 rather trust to the color test given farther on, although this pos- 

 sibly, among specimens of the intergrading subspecies, might not 

 always prove to be an unerring guide. 



20. Neotoma fuscipes annectens subsp. nov. 



Fifteen specimens from Portola I designate by this title, of the 

 same large size as N. fuscipes, but having bicolor tails. The 

 throat, spot on chest and space between the hind legs is white 

 to the roots of the hair. 



This subspecific form may be described as follows: 



General color above and on the sides, reddish brown, varying 

 in some examples to yellowish brown, streaked with black, dark- 

 est on the center of the back, but usually lighter than is the cor- 

 respondimg part in N. fuscipes. Head and face same color as 

 the back. Ears scantily haired, dark brown and edged narrowly 

 with white. Whiskers longer than the head, black. Underparts 

 white, except the belly, which is buff. The hairs on the throat, 

 chest, and between the hind legs, white to their roots; those on 

 flanks and belly plumbeous at base with white or buff tips. 

 Hands and hind feet white, the latter obscured with dusky. 

 Ankles brownish black. Tail bicolor, slaty black above, light 

 gray beneath and on the sides. Total length of type, collector's 

 measurement taken in the flesh, 446 mm.; tail, 210; hind leg, 46; 

 ear, 33. There are no erf nial characters especially worthy of 

 notice. 



The following measurements (collectors) are taken from seven 

 examples: 



Total length, mm. .385 411 405 446 448 428 394 Average about. .417 



Tail, mm 190 204 200 212 210 204 190 " . " ..201 



Hind legs, mm 38 39 42 46 45 42 39 " ..41 



Ear, mm 30 33 32 35 34 33 22 " ..31 



This form is intermediate in size between N. fuscipes and N. 



