576 MESSRS. yv. B. DE WINTON AND T. W. STYAN [May 2, 



foramina 7, length of diastema 9-9, length of molar series 5-1, 

 across molar series 7. Mandible — tip of inoisors to condylar 

 process 23-5, to coronoid 19-5, coronoid to angle 10-1 ; bulla, 

 antero-posterior length 8. 



Molars in almost parallel rows. Upper incisors rather darker 

 than lower, pale orange. 



The length of the tail in proportion to its size, and also the 

 characters and general shape of the skull, show that this species 

 is more closely allied to C. longicaudatus than to any of the other 

 known forms ; the size, however, is so much greater, that there 

 can be no hesitation in distinguishing it under a separate name. 

 The two specimens agree absolutely in every way. Mr. Styan 

 compared one of the specimens with the type of C. longicaudatus 

 in the Paris Museum, and considers them perfectly distinct 

 species. 



LErtis SECHUENENsis, sp. n. (Plate XXXII.) 



In the general pattern of the markings, the shape and length of 

 the ears, and the texture of the fur resembling L. e^wopceus. The 

 fur of almost the whole of the upper surface has long black tips 

 with a subterminal fawn-coloured band, and, owing to the coat 

 being much waved, a very rich mottling is produced ; the underfur 

 is drab-white ; the nape dull greyish brown ; the shoulders and 

 fore legs red-fawn ; the backs and bases of the outside of the ears 

 blue ash-grey ; the tips of the ears are edged with black, and 

 there is a large spot of this colour extending an inch or more down 

 the ears on the hinder surface ; the cheeks in front of the eyes 

 grey ; the rump and thighs ash-grey ; the belly is pure white, but 

 the fur is greyish at the extreme base ; the tail is rather long, dark 

 grey above, the broad black line extending the whole length, but 

 most of the hairs have white tips ; beneath, the hairs of the tail 

 are grey for more than half their length, with pure white tips. 



Type in the British Museum, No. 99. 3. 1. 19. 



Collector's note : " 2 , Dunpi, N.W. Sechuen, October, 1897 ; 

 eyes yellow-brown." 



Another specimen obtained at the same time is not labelled. 



The skull of this Hare very closely resembles that of L. hypsibivs, 

 Blanford, Mamm. Sec. Yarkand Mission, 1879, pi. \\.a. fig. 1, the 

 only apparent difference being that it is rather larger in every 

 measurement, its greatest length being 97 millim., or about a 

 quarter of an inch longer than the figure, a difference of no value 

 whatever. 



In describing this species as distinct, I am therefore relying 

 solely upon external characters ; the principal of which, in the 

 absence of specimens of L. hypdhms for comparison, must be the 

 colour of the ears and the tail — two very characteristic features 

 among Hares ; in these two forms they are as distinct as it is possible 

 to be. 



The pure French grey of the back of the ears and the large jet- 

 black tips are particularly striking ; the tail with the black upper 



