ALLEN: MAMMALIA. 213 



sides are confluent medially. There are three salient angles externally and four 

 internally. The second upper molar is essentially similar but with one less 

 triangle, so that there are three salient angles on each side and the enamel folds 

 of opposite sides are partly open at their bases. The third upper molar has the 

 usual anterior tranverse prism succeeded by two nearly opposite folds, then a 

 trefoil of three lobes, two internal, one antero-external, so that the tooth has three 

 external and four internal salient angles or slightly rounded lobes. 



The anterior lower molar consists of an anterior closed enamel space having 

 one external and two internal projections, followed by three transverse spaces 

 formed by the confluence medially of the enamel folds of opposite sides. This 

 tooth has therefore four external and five internal salient angles. The second 

 lower molar is of the usual three transverse prisms formed by the confluence of 

 the enamel folds of opposite sides. The third lower molar is similar but the 

 external reentrants are shallow notches while those of the internal side are deep 

 and run forward at a strong angle to the longitudinal axis. Each of these two 

 last teeth has thus three external and three internal angles. 



Measurements: The measurements of the type and three other specimens, 

 taken in the flesh by the collector, follow: 



The skull of the type presents the following dimensions: greatest length, 

 25.8; basal length, 23.3; palatal length, 13; zygomatic breadth, 14.3; interorbi- 

 tal constriction, 4.4; mastoid breadth, 11.8; upper diastema, 6.7; mandible 

 from condyle to tip of incisor, 17; alveoli of upper molars, 6; alveoli of lower 

 molars, 5.8. 



Remarks: Four specimens of this interesting species were secured by Mr. 

 Zappey, in Hupeh, three at Changyanghsien and one at Kwangpow. It is a 

 very rusty-looking animal approaching a dark Evotomys in color above, due in 

 part to the suppression of black hairs, while the tawny wash on the belly is 

 remarkably unlike the color of M . melanogaster or the next species about to be 

 described. In these respects it probab'y approaches M. (Caryomys) inez, 

 recently described by Mr. Oldfield Thomas (1909, p. 976) from the mountains 

 of Shansi and differs equally from his newly described M. melanogaster eleusis 

 from northern Yunnan which it approaches in size. It is noteworthy that Mr. 



