Voles from Yunnan, 151 



this form is most nearly relate J to niehinog aster ; but its 

 greater size and peculiar skull seem to justify specific 



2. Eothenomys melanogaater co??finii, subsp. n. 



c?. 173; ?. 171, 179, 180, 181. Kiu-chiaug-Sahveen 

 divide in latitude 28° N. 11,000' to 12,0CXy. 



Most closely resembling 7)i. miletas, but with more normal 

 skull. 



Size and external proportions as in miletus. Colour a 

 trifle darker. Skull with bullae still a little smaller and 

 teeth a trifle larger ; its dorsal contour less convex ; the 

 interobital region flatter, with distinct, though weak, tem- 

 poral ridges along its margins. Cheek-teeth (fig. 1) as in 

 miletus and eleasis ; m^ with three outer and four inner 

 salient angles. 



Dimensjous of type, taken iu flesh by collector : — Head 

 and body 106 mm.; tail 59 ; hind foot (on skin) 19; ear 13. 

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



Type. Adult male. B.M. No. 22. 12. 1. 1. Original 

 No. 173. Collected by Mr. G-. Forrest, July 25, 1921, upon 

 the Kiu-chiang-Salween divide in latitude 28*^ N. at an 

 altitude of 11,000'. 



Hab. As above. 



Five specimens of this vole, one of them a melano, were 

 collected upon the rocky alpine meadows of the Kiu-chiang 

 -Salween divide at heights of from 11,000' to 12,000'. In 

 this series the hind foot measurement (upon the skin) ranges 

 between 18 and 19 mm. ; the tail, as measured in flesh by 

 the collector, between 40 and 59. Externally the likeness 

 to m. miletus is striking, but the skull is of very different 

 appearance. 



While working out Mr. Forrest^s specimens, I have had 

 occasion to examine two collected by Mr. Wells in the 

 Mishmi Hills. These prove to belong to a local form of 

 E. melanogaster, which may now be described as 



Eothenomys melanogaster libonutus^ subsp. n. 



Closely resembling m. mucronntus, but smaller. 



Size rather small, hind foot 17 mm., condylo-basal length 

 of skull 24 9 (instead of 19 and 26 respectively, as iu 

 mucronatus). Colour dark and rich. Upper parts near 

 " clove-brown '^ of llidgway, brightened by dull golden or 

 rufous hair-tips. Under surface slaty grey. Feet above 

 scarcely lighter than upper surface of tail. 



Skull with small bullae and large teeth, as iu mucrcnatus ; 



