150 Mr. M. A. C. Hinton on 



b. Larg-e (condylo-'basal lengtli to 27'5 mm.) ; 

 m^ with the third inner angle vestigial ; 

 m^ with first outer infold shallow {jiUicoJa- 

 like), with vestigial fourth inner and fourth 

 outer angles. Colour bright. [Lichiang 

 Range,] E. proditor, sp. n. 



In addition to the forms enumerated in the above key, 

 Cabrera has described his E. honzo from Eu-chow. I have 

 not seen the type, but, judging from the description and the 

 excellent figure of the teeth, honzo is certainly no more than 

 a subspecies of inelanogaster, and it may be identical with 

 M. coluimus. The hind foot measures only 15-5 mm., and 

 m^ possesses four outer and three inner angles ; these 

 characters may, however, be due to youth. 



1. Eothenomys fi delis, sp. n. 



^ , 454 ; ? . 455,456. Lichiang Range^ N.W. flank in 

 lat. 27° 30' N. 14,000^ 



S . 404. Lichiang Range, W. flank, in latitude 27'' 30' N. 

 13,000'. 



A large bright-coloured species, with long narrow skull. 

 Dental and external characters essentially as in melanogaster. 

 Size large (hind foot about 20 mm. ; condylo-basal length 

 of skull to about 28 mm.). Colour nearly as in brighter 

 subspecies of melanogaster (e. g., colurnus and miletus). 

 Upper parts dark brown (near ''mummy-brown'^), 

 brightened by rufous hair-tips; under surface slate-grey, 

 with a hoary tinge. Feet and tail dusky above. 



Skull very large, long and narrow ; with the temporal 

 ridges and postorbital squamosal crests strongly developed. 

 Bullse relatively small, teeth relatively large (as in m. Uho- 

 iwtusviwdi m. miletus). Cheek-teeth (fig. 2) normal ; m^^\\\\ 

 four, m^ with three inner salient angles ; m^ with three 

 outer and four inner salient angles. 



Dimensions of type, measured in the flesh : — Head and 

 body 126 mm.; tail 49; hind foot 18-5 ; ear 12. 

 For skull-measurements, see table at p. 153. 

 Tijpe. Adult female. B.M. No. 22.12.1.8. Original 

 No. 455. Collected on the flank of the Lichiang Range 

 in latitude 27° 30' N. Nov. 1921. Altitude, 14,000'. 

 Hab. As above. 



This the largest known species of Eothenomys ; three of 

 the specimens are thoroughly adult, with head and body 

 measurements ranging between 126 and 134 mm., the length of 

 the hind foot ranging from 18'5 to 20. As already indicated, 



