400 Mr. O. Thomas on 



"mouse-grey," scarcely paler below. Hands and feet white, 

 a sl.ightly darker shade edging the latter externally. Tail 

 greyisli above, glossy wliitish below. 



Skull smaller than in C. hypsibia, its interorbital region 

 even lower and flatter than in that species. 



Dimensions of the type (measured in flesh) : — 



Head and body 67 mm.; tail 54; hind foot 13. 



Skull: condylo-basal length ]8; condylo-incisive length 

 18*?; greatest breadth (c.) 9 ; upper tooth-series 8'0 ; com- 

 bined length of jo^-m^ 4'7. 



Hah. & Type as above. 



The species of Chodsigoa are all very closely allied, 

 differing mainly by size and length of tail. This is the 

 smallest and shortest-tailed as yet described. 



6. Blarinella griselda, sp. n. 



$ . 41. 42 miles S.E. of Tao-chou. 10,000'. 17th Sep- 

 tember, 1911. B.M. no. 12. 8. 5. 23. Type. 



"On mossy bank, in birch- wood .^"^ — J. A. C. S. 



Smaller, greyer, and shorter-tailed than J3. quadraticanda. 



Size rather less than in quadraticauda. General colour 

 above "mouse-grey," rather paler and more drabby below. 

 Hands, feet, and tail all dull greyisli, not dark brown as in 

 the allied species ; tail decidedly shorter than in that animal. 



Skull rather smaller than in quadraticauda. Second upper 

 unicuspid evenly intermediate in size between the tirst and 

 third — in quadraticauda the second nearly equals the tirst 

 and is conspicuously larger than the third. 



Dimensions of the type (measured in flesh) : — 



Head and body 68 mm. ; tail 33; hind foot 11. 



Skull : condylo-incisive length 20 ; condylo-basal length 

 18"6 ; greatest breadth 9'4 ; upper tooth-series 8'6 ; front of 

 jM* to back of ?u- 4"5. 



Hah. & Type as above. 



This second species of the genus Blai'inella is easily distin- 

 guishable from the Sze-chwan form by its smaller size, 

 greyer colour, and shorter tail. 



7. Mustela astuta, M.-Edw. 



(? . 40, 73. 25 and 40 miles S.E. of Tao-chou. 9000- 

 9500'. 



The marked narrowness of the frontal region distinguishes 

 this weasel from the Tibetan M. (emon, Hodgs., which it 



