Vol. XXVI, pp. 159-160 June 30, 1913 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW CACOMISTLE FROM NEVADA. 



BY GERRIT S. MILLER, JR. 

 [By permission of the Secretary of the Smithsonian Institution. 



A Cacomistle from the extreme south of Nevada, presented to 

 the U. S. National Museum by Mr. Maximilian Weiss, differs 

 so noticeably from the many other specimens previously in the 

 collection that there seems little reason to doubt that it repre- 

 sents a peculiar local form. 



Bassariscus astutus nevadensis subsp. now 



Type. — Adult female (skin and skull) No. 174,760 U. S. National 

 Museum. Collected in Eldorado Canyon, Clark Co., Nevada, January 

 8, 1912, by Maximilian Weiss. Presented by the collector. 



Description. — Size less than in Bassariscus astutus oregonus from Cali- 

 fornia and Oregon, the skull more like that of the Lower Californian 

 11. astutus pnlmarius ; teetb about as in the northern animal, therefore 

 relatively and actually larger than in pnlmarius; color peculiar in the 

 clear gray of head in front of ears, and in the reduction of the amount of 

 buff in genera] tint of neck and anterior half of back, this entire region 

 appearing more ashy than in any other adult specimen in fresh pelage 

 seen; underparts pale cream burl' behind fore legs, less pallid anteriorly. 



Measurements. — Skin of type (approximate): head and body, 330; tail, 

 310; bind foot, 57 (55); condylobasal length of skull 72.4 (76.6);* zygo- 

 matic breadth, 4:!. 4 (47.S) ; breadth of rostrum, over canines, 12.6 (13.0) ; 

 interorbital constriction 15 ± ( 15.2) ; postorbital constriction, 14.8 (14.8) ; 

 breadth of braincase, 32.8 (32.4); depth of braincase, 23.2 (24.8); 

 mandible, 50.0 (53.4); maxillary toothrow exclusive of incisors, 30.2 

 (31.0); mandibular toothrow exclusive of incisors, 31.8 (32.8). 



* Measurements in parenthesis are those of an adult female B. a. oregonus from 

 Stillwater, Shasta <'o., California (No. 10S,763). 



41— Proc. Biol. Soc. Wash., Vol. XXVI, 1913. (159) 



