I 



288 MICROTIN^ 



Skull markedly larger and heavier than that of E. m. eleusis, 

 strongly bowed dorsally, with small auditory bullae and heavy 

 cheek-teeth ; m^ with three outer and four inner salient angles. 



For external mid cranial measurements, see tables at end of 

 volume. 



1/. Eothenomys melanogaster confinii Hinton. 



1923. Eothenomys melanogaster confinii Hinton, Ann. Mag. N.H., [9], 

 11, p. 151. 



1924. Microtus [Eothenomys) melanogaster confinii G. M. Allen, Amer. 

 Mus. Nov., No. 133, p. 3. 



Type.—HM., No. 22.12.1.1; adult male, collected July 25, 

 1921, by Mr. G. Forrest; presented by Colonel Stephenson 

 R. Clarke, C.B., D.S.O. 



Tyjpe locality. — Kiu-chiang-Salween Divide in latitude 28° N., 

 at an altitude of 11,000 feet. 



Range. — Mountains of Southern Yunnan at altitudes from 

 6000 feet (Salween Basin) to 12,000 feet on the Kiu-chiang- 

 Salween Divide, and to over 10,000 feet on the Pei-tai Mountain, 

 south of Chung-tien. 



Characters. — Most closely resembling E. m. miletus, but with 

 more normal skull. Size (hind-foot 19 mm. ; condylo-basal 

 length of skull 25-2 mm.) and external proportions as in E. m. 

 miletus. Colour a trifle darker with blackish slaty belly ; many 

 of the long hairs on sides and belly have burnished tips. 



Skull with dorsal contour less convex than in E. m. miletus ; 

 interorbital region flatter, with distinct though weak temporal 

 ridges along its margins; auditory bullae slightly smaller and 

 cheek-teeth slightly larger. Cheek-teeth as in E. m. miletus and 

 E. m. eleusis ; m^ with three outer and four inner salient angles. 



For external and cranial measurements, see tables at end of 

 volume. 



Remarks. — Externally the likeness to E. m. miletus is striking, 

 but the more normal skull is of very different appearance. Allen i 

 notes that " a series secured by the Second Asiatic Expedition 

 [American Museum] includes two which, as noted by the collector, 

 contained on February 8, 1917, one and two embryos respectively, i 

 a number correlated, no doubt, with the reduced number of J! 

 mammae." 



\g. Eothenomys melanogaster colurnus Thomas. 

 1911. Microtus (Eothenomys) melanogaster colurnus Thomas, Ann. 



Mag. N.H., [8], 7, p. 209. 

 1923. Eothenomys melanogaster colurnus Hinton, Ann. Mag. N.H., 



[9], 11, p. 149. 



Type.— B.M.., No. 0.5.8.38 ; adult male, collected October 24, 

 1899, and presented by C. B. Rickett, Esq. 

 Type locality. — Kuatun, N.W. Fekien. 



