关键词: 黄河鼠兔, 分类, 订正

Abstract: The type of ochotona (Conothoa)huangensis is named basing two original specimens by Matschie (1907)，and its type locality is an unrecorded spot．The type locality was assumed to the Tsingling (Mts. Qinling，Shaanxi)in the vicinity of Sianfu (Xi'an shi oy Allen(1938)．He recognized O．huangensis as a subspecies ef O．thibetana，and followed by Ellerman and Morrison-Scott (1951)；Feng and Kao(1974)，Feng and Zheng (1985)．However，Ognev(1940)，and followed by Gromov and Baranova(1981)，placed it as 0.daurica，apparently because Thomas (1908) in his original description，compared O．huangensis to bedfordi, a subspecies of O. daurice．They did not themselves examine any specimens of 0．huangensis，Gureev(1964)listed huangensis as synonym of different two species. O．thibetana and 0. daurica, in the same book．Corbet(1978)synonymised 0． hungensis with 0．thibetana，and then with O．daurica(Corbel, 1984)． 0．syrinx Thomas 1911 and O. cansus more a Thomas 1912 were synonymised with O.t.huangensis by Allen(1938)and followed by Argyropulo(1948); Ellerman and Morrison-Scott(1951，1960); Feng and Kao(1974)．Osgood (1932)and Corbet (1978) listed the two synonyms as O．thibetana．Chapman et a1．(1990) included syrinx in O．t．huangensis but morsa in O．cansus．These are the source of confusion. For this reason we have examined many specimens of this area．5 specimens from Zhashui(the Mts．Qinling in the vicinity of Xi'an，Shaanxi)，the assumed type locality，as well as a series of 41 specimens from various localities in Mt．Taibai． Shaanxi, wushan，Sichuan, Xunhua，Qinghai and so on are examined，all possessed the following characters． Ears are small in size．The color of dorsal areais darker grey tinged with brown．Under surface is greyish white．The color of naked pads is clay yellow． Skull are flattened form．Interorbital space and braincase are broader．Bu1la are conspicuously smaller and lower． Although quite similar to 0．thibetana, here 0．huangensis is separated on the basis of its skull characters and the observation that intermediate forms are not found in the extensive zone of sympatry，Mt．Taibai，(Mrs．Qinling)and mountains of northwestern Sichuan，between the two species．It also has a sympatrin distribution with allied species ．Such as，it sympatric with O．caesus in Xunhua，Qinghai and southern Gansu．The intermediate forms do not occur in these area． Compared with 0．daurica，0．huangensis has a smaller size，dull pelage color；a border and flattened skull and a smaller bulla．Thus，we believe 0．huangensis is a in dependent species rather than a subspecies of 0．thibetana or a synonym with 0．daurica．The scattergram also shows the difference among 0．huangensis，0．teibctana，0．nubriea，0．royaei(see Fig．1)． 0．syrinx an d 0．t．xunhuaensis is placed in synonym with 0．huangensis based on original description and topotypes．The topotypes ofmorosa display the skull shape and pelage color typical of O．thibetana .

Key words: Huanghe Pika(Ochotona huangcnsis), Classification, Revisio