594 Bulletin American Museum of Natural History. [Vol. XIX, 



later compilers. If we admit that Liechtenstein, in adopting 

 the "Cervus mexicanus Desm." ("Cervus mexicanus Linn. 

 Gm." on his plate) for the deer he described from Mexico, 

 placed the name upon a recognizable basis, as contended by 

 Lydekker (Deer of All Lands, 1898, p. 263) and Osgood 

 (Proc. Biol. Soc. Wash., XV, 1902, p. 88), the name becomes 

 applicable to the white-tailed deer of the Valley of Mexico, 

 which has only a distant relationship to the form here 

 described. 1 



According to Mr. Batty these deer are not a "timber" deer, 

 and frequent only the high, almost treeless mountain tops, 

 like the mountain sheep. They are not very common and are 

 hard to approach, in consequence of the open character of the 

 country. 



2 . Sciurus apache A lien . 



Five specimens, all adult, collected as follows: Cienega de 

 las Vacas, i male, April 3 ; Arroyo de Bucy, i male, 3 females, 

 May 20-28. They are quite uniform in size as regards the 

 length of the head and body, but the tail varies greatly. The 

 five specimens measure: Total length, 566 (543591); head 

 and body, 276 (267286); tail vertebrae, 292 (264377); hind 

 foot (without claws), 66 (64-70); ear from notch, 32.6 (32-35). 



3. Eutamias durangae, sp. nov. 



Type, No. 21410, 2 ad., Arroyo de Bucy, northwestern Durango, 

 Mexico; J. H. Batty. 



Similar to Eutamias bulleri from southwestern Zacatecas, but larger 

 and paler, with the white markings on the head broader and the white 

 postauricular patch larger; rump, basal portion of the tail, and flanks 

 faintly suffused with a very pale tinge of buff instead of being gray as 

 in bulleri; the dark dorsal stripes are similar in extent and in color, 

 but the intervening light stripes are suffused with pale cinnamon in- 

 stead of being nearly clear white as in bulleri, and the rufous of the 

 flanks is much paler. 



1 As Mr. Osgood (/. c.}, in his history of the case, shows the validity of the claim 

 that the original Cervus mexicanus had no tangible basis, it seems more in accordance 

 with usage in such cases to consider the name mexicanus as preoccupied by an indeter- 

 minable species, and to recognize the form described and figured by Lichtenstein as 

 entitled to the new name Odocoileus lichtensteini which has been bestowed upon it. (Cf. 

 Allen, this Bulletin, XVI, 1902, pp. 16 and 20, footnotes.) 



