New Mammals from Indian lerrlfory. 137 



Peiomyscus bellus sp. nov. 



Tt^pe from Stilwell, I. T. No. 5-483, ? 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. atlwaterl (apparently its nearest 

 geographical ally) P. bellus dift'ers 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 aUwateri). 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 c/tarart^ns.— Skull of the same general appearance as that of P. 

 attwuteri, but larger and w'ith 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, 1!)0; tail vertebne, 90; hind foot, 24; ear, 

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

 total length, 192.5; tail vertebra, 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. bellits difiers from P. athvateri 

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

 P. 7rmieyl, 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, r^ old adult, collection of E. A. 

 and 0. Bangs. Collected by Thaddeus Surber August 13, 1896. Original 

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



General characters. — Size and proportions about as in T. strlains fjriseiis ; 

 colors very bright, especially on rump ; all the Ijlack donsal and lateral 

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

 acter may be seasonal. 



CoZo?'.— Rump and upper surface of legs deej), 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 up2)er surface 

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

 under i)arts 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 grisetis. 

 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. 



