EOTHENOMYS 289 



Rmuje. — N.W. Fokieu. 



Characters. — Differing from E. m. melanogaster by its much 

 brighter colour and perhaps by its shorter tail (properly measured 

 specimens not available). 



General colour of upper parts rather darker and richer than 

 " hazel," instead of being between " bistre " and " mummy 

 brown " as the typical subspecies. 



Skull with relatively large auditory bulla; (but these rather 

 smaller than in E. m. melanogaster) and light cheek-teeth. As in 

 the typical form m^ has only three salient angles on each side. 



For external and cranial measurements, see tables at end of 

 volume. 



\h. Eothenomys melanogaster mucronatus Allen. 



1912. Microtus (Eothenomys) mucronatus G. M. Allen, Mem. Mas. 



Comp. Zool., Havard Coll., 40, p. 214. 

 1923. Eothenomtjs melanogaster mucronatus Hinton, Ann. Mag. N.H., 



[9J, 11, p. 149. 



Type.—M.\xs. Comp. Zool., Harvard Coll., No. 7789; adult 

 female, skin and skull, collected August 11, 1908, by W. R. 

 Zappey. 



Type locality. — Tachiao, Western Sze-chwan. Altitude 12,000 

 feet. 



Range. — Known only from the type locality. 



Characters. — Size normal, hind-foot 19 mm., condylo-basal 

 length 26 mm. Ears relatively large. Fur long and soft. 



General colour above near " mummy brown," produced by a 

 fine grizzle of blackish hairs and hairs with cinnamon rufous tips. 

 Under parts dark slate, with a very slight buffy wash on chest. 

 Feet and tail covered with short hair-brown hairs; those of the 

 tail slightly paler ventrally. 



Skull with broad braincase and more bowed zygomata than 

 in the typical form; palate boldly sculptured, its posterior edge 

 with distinct median spinous process. Auditory bullae small, 

 cheek-teeth heavy. Enamel pattern of molars essentially as in 

 E. m. melanogaster ; m^ with three salient angles on each side. 



For external and cranial measurements, see tables at end of 

 volume. 



1''. Eothenomys melanogaster libonotus Hinton. 



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

 [9], 11, p. 151. 



Type.— B.M., No. 21.12.5.54; adult male, collected June 20, 

 1921, by Mr. H. W. Wells; presented by the Bombay Natural 

 History Society. 



Type locality. — Dreyi, Mishmi Hills, Assam. Altitude 5140 

 feet. 



Range. — Known only from the type locality. 



