MAMMALS MtOM WESTKKN CillXA. 129 



5. Nyctamjs plancvi (!ci-))p. 



c?. 2677. Ya-chow-fii, S/,R-cliw;ui. 2500'. 



This Bafc is just flistiuguisliiihle— by its rather smaller size — 

 from the Nepalese iV. Inhiata^ ILorlirs., with which it shares the 

 reduced length of the outer incisors. 



6. Uropsiltjs soricipes M.-Edw. 



6. 2605, 2637. Wei-choe, on Si-ho River, W. S/e-chwaii. 

 9000-12,500'. 



Much to my surprise, these specimens show that, in spite of 

 the nearness of the localities and the almost comi)lete identity 

 of external and cranial chaivvcters, the examples from Mt. Omi 

 referred in my previous paper to (/. soricipss, with a note on 

 the discrepancy in the denta,l formula, belong to a distinct 

 species altogether — that discrepancy being the distinguishing 

 cliaracteristic. 



For those two specimens, like that figured by Milne-Eilwards 

 and another one from Pere David's series kindly lent me by 

 Prof. Trouessart, have no trace either of the minute p'' or i.„ botli 

 present in the Omi species, nor any space in which they could 

 have stood. We must therefore accept the formula given by 

 Milne-Edwards as correct, and assign these examples to his 

 species. 



This being the case, the Omi animal, with a constantly different 

 formula,, will need not oidy description us a new s[)ecies, but the 

 formation of a special genus for its reception. 



Ajid, furthermore, a single example of the group from Chin-fu- 

 san proves to have yet another formula, the small upper premolar 

 l)eing pn^sent, and indeed better develojied than in the Omi form, 

 the adilitional lower incisor is absent, while, alone in the group, 

 a p, is present. 



The three animals may be briefly diagnosed as follows: — 



UuorsiLUS. 



Teeth ' x 2 = 34, neither p^, p^, nor i^ present, the adult 

 formula being therefore 



J 1.2.0 ^ I p 1.2.0.4 ^1.2.. 3 

 '0.2.0 1 "1.2.0.4 1.2. 3' 



U. soricipes. Size fairly large. Colour near " sepia " ; underside 

 of tail lighter than upper. (Winter specimens only seen.) 



Nasillus Thos. 



Teeth X 2 = 38 ; p'' and p^ present ; no i, (detailed formula 



below). 



Type. X. (jracilis. 

 Pkoc. Zooi.. Soc— 1912, No. IX. 9 



