Type. — Adult male (skin and skull), No. 155,047. U.S. National Museum. 

 Collected at Chiao-ch'eng Shan, go miles west of T'ai-yuan Fu, Shansi. 

 Alt, 7000 ft. October ilth, 1908. 

 Original number, 32. 



Diagnosis. — Size and general characters as in Microtus {PhcBomys) Johannes, 

 approaching mars-brown instead of dull ochraceous-buff. 



Colour. — Upper parts a uniform fine grizzle of cream buff and black, with a 

 distinct brownish wash on crown and along middle of back, the general 

 effect suggesting Ridgway's mars-brown, and not in the least resembling 

 the pallid ochraceous-buff of Microtus Johannes. Sides not so dark as back, 

 the grizzling less evident. Under part light cream-buff, much clouded by 

 the blackish-slate under colour. Feet dull buffy-white, with an evident 

 brownish wash. Tail whitish below, brownish above, not sharply bi-colour. 



Skull and Teeth. — The skull and teeth do not differ appreciably from those of 

 Microtus Johannes. They are conspicuously smaller than in M. mandarinus. 



Measurements in mm. — Type : head and body, 104 ; tail, 18 ; hind foot, without 

 claws, 15*5 ; ear, 9 ; skull, condylobasal length, 24*8 (27'4)* ; zygomatic 

 breadth, 16-2 (i7*8); interorbital constriction, 3'6 (4*0); occipital breadth, 

 13-0 (i3"o) ; occipital depth, 7-0 (7.2) ; nasal, 6*2 (7*0) ; diastema, 7*8 (9-2) ; 

 mandible, i6'4 (18*2) ; maxillary tooth-row, 5*8 (6*4) ; mandibular 

 tooth-row 5*8 (6*4). 



Specimens examined. — Four, all from the type locality. Caught on grassy hill- 

 side, away from woods. Much earth thrown up in front of burrows. In 

 both these respects this vole agrees with M. Johannes. The latter, 

 however, seems to be an inhabitant rather of loess mountains than of the 

 high rocky mountains that form the habitat of this species. It has also 

 been recorded from similar country near Ning-wu Fu, Shansi. 



26. Microtus inez, Thomas. 



^ 152. 12 miles south of Yen-an Fu, Shensi. Alt. 4000 ft. January 

 9th, 1909. 



The only vole hitherto recorded from Shensi, north of Hsi-an Fu. 

 Very rare here, though plentiful enough in similar districts in Shansi. 

 Inhabits the bottoms of well vegetated loess ravines. 



* Measurements in parenthesis are those of an adult male Microtus mandarinus from the vicinity of T'ai-yuan Fn, 



Shansi. 



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