NEW MAMMALS FROM THE HIGHLANDS OF SIBERIA 

 By N. HOLLISTER 



Through the interest and liberality of Dr. Theodore Lyman, of 

 Harvard University, the United States National Museum was invited 

 to cooperate with the Museum of Comparative Zoology at Harvard, 

 in an expedition to the Altai Mountains, Siberia and Mongolia, during 

 the summer of 1912. The object of the expedition, which was under 

 the personal direction of Doctor Lyman, was to collect the mammals 

 and birds of this region for the institutions interested ; with the 

 wonderful wild sheep of the Altai as a special incentive. The results 

 were far beyond the expectations, and among the mammals are several 

 new species, diagnoses of which are here given. 



MYOPUS MORULUS, sp. nov. 



Type from Tapucha, 1 Altai Mountains, Siberia. No. 175197, 

 United States National Museum; skin and skull ; adult J\ Collected 

 August 6, 1912, by N. Hollister, ( )rig. No. 4437. 



General characters. — Size of Myopits schistic olor ; coloration 

 darker, more blackish ; rusty dorsal area duller and extending for- 

 ward between ears to center of head ; sides and underparts unicolor. 

 Audital bulla; smaller and flatter. 



Color of type. — Face between eyes, cheeks, sides, and underparts 

 dark slate gray; nose slightly lighter. Upperparts with rusty stripe 

 from head, forward of ears, extending backward to near base of tail ; 

 becoming more intense in color posteriorly, and broadening to cover 

 lower back between hips. Hands like sides ; feet and tail black. 



Skull and teeth. — Skull like that of Myopus schisticolor but with 

 audital bullae smaller and much Ratter. Upper and lower teeth com- 

 pressed laterally; the enamel loops rounder, and the teeth slightly 

 smaller, though of about same length as in schisticolor. Incisors 

 weaker. 



Measurements of type. — Head and body, 86 mm. ; tail vertebras, 14 ; 

 hind foot, without claw, 16. Skull: Condylobasal length, jj.j : 

 nasals, 6.6 ; upper tooth row, 6.6. 



1 Tapucha is 125 miles southeast of Biisk, and 50 miles northwesl of 

 Ongudai, on the post road to Kosh-Agatch. The exact locality is 5 miles 

 south of Tapucha, at 6875 feet elevation. 



Smithsonian Miscellaneous Collections Vol. 60, No. 14 



1 



