New Mammals from Indian Territory. 137 



Feromyscus bellus sp. nov. 



Type from Stilwell, I. T. No. 5483, 9 adult, collection of E. A. and 

 O. Bangs. Collected by Thaddeus Surber August 15, 1896. Original No. 

 67. Two specimens from Stilwell, I. T. 



General characters. Compared with P. attwateri (apparently its nearest 

 geographical ally) P. bellus differs in being much darker and browner; 

 in having a larger hind foot, a pectoral band of fawn color, and a fawn- 

 colored nose patch (white in attwateri). It belongs to the group of so- 

 called brush mice. 



Color. Upper parts broccoli-brown much mixed with black along back, 

 becoming fawn color on lower sides ; patch at root of whiskers fawn color ; 

 ears large, nearly naked, dusky; tail large and long, bicolored, black 

 above, white below, well haired and with a decided pencil ; feet and 

 hands white ; under parts white, the hairs plumbeous at base ; a band of 

 fawn color extending across under side of neck in front of arms. 



Cranial characters. Skull of the same general appearance as that of P. 

 attwateri, but larger and with deeper, broader brain case. Size of the 

 type skull: basilar length, 24.2; occipitonasal length, 28; zygomatic 

 breadth, 14; greatest length of single half of mandible, 15. 



Size. Type : total length, 190; tail vertebrae, 90; hind foot, 24; ear, 

 17. Average measurements of two adult specimens from Stilwell, I. T.: 

 total length, 192.5; tail vertebrae, 93.5; hind foot, 24; ear, 16. 



General remarks. The two examples of this brush mouse were taken on 

 one of the rocky hillsides at Stilwell. P. bellus differs from P. attwateri 

 very materially, but P. attwateri seems very close, perhaps too close, to 

 P. rowleyi, as I must confess I can hardly distinguish skins of the two 

 species. 



Tamias striatus venustus subsp. nov. 



Type from Stilwell, I. T. No. 5478, J old adult, collection of E. A. 

 and O. Bangs. Collected by Thaddeus Surber August 13, 1896. Original 

 No. 63. Two specimens from Stilwell, I. T.; 1 from Noel, Mo. 



General ctiaracters. Size and proportions about as in T. striatus griseus ; 

 colors very bright, especially on rump ; all the black dorsal and lateral 

 bands much shortened; hair, especially on rump, hispid, but this char 

 acter may be seasonal. 



Color. Rump and upper surface of legs deep, rich, lustrous chestnut 

 rufous, this color extending up back and sides, narrowly bordering the 

 black bands ; sides yellowish gray ; back (between the black bands) and 

 upper neck and shoulders dark gray ; ears and face much suffused with 

 chestnut rufous ; facial markings not conspicuous ; hairs of upper surface 

 of tail yellowish at base, then black and slightly tipped with white; 

 under parts yellowish white, somewhat washed on belly and under side 

 of legs with cinnamon rufous ; under side of tail cinnamon rufous. 



Cranial characters. The skull is large, about as in T. striatus griseus. 

 Size of type skull: basilar length, 38.6; occipitonasal length, 43. 6; zygo 

 matic breadth, 24.4 ; greatest length of single half of mandible, 26.2. 



