524 PROCIJEDiyOS of the national museum. vol. -15. 



Juvenal pelage, head and skull of a male in post-juvenal pelage, and 

 an odd skull of an adult. These specimens are nearly topotypes of 

 lugubris, which was described primarily from a specimen taken at 

 Ongudai. Neither of the skins has the outer side of the ear entirely 

 black, as described of the species by Kastschenko and by Barrett- 

 Hamilton ; this may possibly be due to their immaturity. The adult 

 skull, compared wdth skulls of timidus, agrees perfectly with the 

 account given by Kastschenko. It is evident from the differences in 

 the age of the two young animals secured that this hare breeds at 

 least twice during the season. 



LEPUS ZAISANICUS Satunin. 



1907. Lepus zaisanicus Satunin, Ann. Mus. Zool. St.-P6tersbourg, vol. 11 (1906), 

 p. 161. 



Four hares from Tchegan-Burgazi Pass, near the Mongolian border, 

 differ fi-om all other Asiatic species, and agree very well with the color 

 description and measurements of Lepus zaisanicus, and are therefore 

 provisionally referred to that species. The upper incisors of these 

 specimens, both ju venal and adult, present a remarkable appearance 

 in being projected far forward. The skull of zaisanicus was not 

 described by Satunin, and it is impossible without direct comparison 

 to judge if these specimens actually represent his species, but from 

 the external characters and on geographical grounds it seems most 

 probable. The specimens were collected from July 9 to 25, on the 

 high open alplands above Tschornia Creek, at from 8,700 to 10,000 

 feet elevation. Hares were by no means abundant in these moun- 

 tains and comparatively few were seen. Lyman reported seeing a 

 considerable number while sheep hunting on the Mongolian side of the 

 range. 



LEPUS QUERCERUS Hollister. 



1912. Lepus quercerus Hollister, Proc. Biol. Soc. Washington, vol. 25, p. 182, 

 December 24. 



The hares of the ^'tolai group" collected on the Chuisaya Steppe, 

 near Kosh-Agatch, differ conspicuousl}' from all the previously 

 described species from northern Mongolia and Siberia, and are specifi- 

 cally distmct from the hares of the border mountams to the south- 

 ward, which I have referred to Lepus zaisanicus Satunin. Hares are 

 much more numerous on the desert steppe than in the higher moun- 

 tains, and six were killed by members of our party during the 24 

 hours coUectmg m the center of the plain. Fom- specimens were 

 preserved. It is not at all unlikely that this species is confined to 

 the Chuisaya Steppe, as we failed to find it in the desert mountains 

 to the southward, and the 'heavy forest on the north must prove an 

 effective barrier to such a desert species. The Kalmuks call this 

 hare "Ico-yun'J' 



