26 Osgood Two New Spermophiles from Alaska. 



tail much shorter; somewhat similar to C. kodiacensis but molar teeth 

 actually and relatively larger; color less mixed with dusky. 



Color. Type (fall moult nearly complete): Sides of head, neck, and 

 to a great extent, shoulders and nape, pale gray darkened in places by a 

 blackish slate undercolor; eye-ring and subauricular spot pure white; 

 forehead and crown burnt umber; middle of back and rump vandyke 

 brown spotted with distinct quadrate grayish white spots from one-fourth 

 to one-half an inch apart; underparts dull grayish white overlaying 

 blackish slate except on middle of belly, where vestiges of an earlier 

 pelage show creamy buff; under side of tail dark tawny medially, lateral 

 hairs of new pelage with three to four black or dusky annulations each 

 and a broad grayish white tip, hairs of pencil with one or two narrower 

 dusky annulations and a broader black subterminal section about 27 

 mm. in width; tip of tail grayish white; feet creamy white. 



Skutt. Similar to that of C. plesius but larger and heavier; nasals 

 longer, relatively narrower, and more constricted posteriorly; molar 

 teeth actually about as in plesius, therefore relatively small; molar 

 teeth much smaller than in barrowensis but larger than in kodiacensis. 



Measurements. Type: Total length, 394; tail vertebrae, 103; hind foot, 

 60. Average of seven adult males from the type locality: Total length, 

 374 (359-394); tail vertebras, 102 (95-108); hind foot, 59 (56-61). Skull of 

 type: Basilar length of Hensel, 49; occipito-nasal length, 57.5; zygomatic 

 breadth, 38; length of nasals, 21; alveolar length of molar series, 13.3. 



Remarks. Spermophiles from the naturalized colony at Unalaska and 

 from points on the Alaska Peninsula have in late years been tentatively 

 referred to SpermopJiilus empetra, representing the form which will now 

 be known as Citellus parryi, as in the absence of specimens from other 

 localities this was the only safe course. The colony at Unalaska was 

 stocked some years ago by Mr. Samuel Applegate, a Signal Service ob 

 server, who took the live squirrels from Nushagak, then called Fort 

 Alexander, and liberated them at Unalaska. During the past year I 

 secured good series of Spermophiles from Nushagak and the region of 

 the base of the Alaska Peninsula. /These of course agree with others 

 from Unalaska and are easily separable from plesius aud kodiacensis, the 

 only forms with which they need close comparison. 



Citellus nebulicola, sp. nov. 



Type from Nagai Island, Shumagin Ids., Alaska. No. 59, 145 United 

 States National Museum, 9 ad., June 24, 1893. C. H. Townsend. 



Characters. Similar to Citellus kodiacensis but smaller, shorter-tailed 

 and apparently paler colored; skull small and light with relatively nar 

 row braincase and basioccipital. 



Color. Similar in general to that of C. kodiacensis but paler, the black 

 and black-tipped hairs being much less numerous and the dusky about 

 the nape and sides of head being much reduced; tail also with less 

 black than in kodiacensis. No. 16,424, yg. $ , buff phase: Underparts 



