54 Miller — Four New Chinese Mammals. 



Diagnosis. — Size and general characters as in Microtus (Ph;romys) 

 Johannes Thomas, but color dark, the general effect approaching mars- 

 brown instead of dull ochraceous-buft*. 



Color. — Upperparts 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 Kidgway'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. ' Underparts light cream-buff much 

 clouded by the blackish-slate under color. Feet dull huffy white with an 

 evident brownish wash. Tail whitish below, brownish above, not sharply 

 bicolor. 



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

 those of Microtus Johannes. They are conspicuously smaller than in 

 M. mandarin u*. 



Measurements. — Type: head and body, 104; tail, IS; hind foot without 

 claws, 15.5; ear, 9. Skull: condylobasal length, 24.8(27.4)* zygomatic 

 breadth, 16.2 (17.8); interorbital constriction, 3.6 (4.0); occipital 

 breadth, 13.0 ( 13.0); occipital depth, 7.0 ( 7.2) ; nasal, 6.2 (7.0) diastema, 

 7.8 (9.2); mandible, 16.4(18.2); maxillary toothrow, 5. 8 H>.4); man- 

 dibular toothrow, 5.8 (0.4). 



Specimens examined. — Four, all from the type locality. 



Allactaga mongolica longior subsp. now 



Type. — Adult female (skin and skull) No. 155,183, TJ. S. National 

 Museum. Collected 15 miles northeastof Ching-ning-ehow, Kansu, China. 

 Altitude 0,200 feet, July 2(5, 1909, by Arthur de C. Sowerby. Original 

 number 204. 



Diagnosis. — Similar to true Allactaga mongolica (Pallas), but ear and 

 hind foot longer, and audital bullae larger. 



Measurements. — Type: head and body, 150; tail, 230; hind foot with- 

 out claws, 70. Skull: condylobasal length, 38.4; zygomatic breadth, 

 20.0; interorbital constriction, 11.4; breadth of braincase, 19.8; depth of 

 braincase at middle, 13.6; nasal (median), 15.4; diastema, 12.6; man- 

 dible, 24.8; maxillary toothrow, alveoli, 8.0; mandibular toothrow, 

 alveoli, 7.8. 



Specimens examined. — Twelve, all from the type locality. 



Ochotona annectens sp. nov. 



Type. — Adult male (skin and skull) No. 155,164, U.S. National Museum . 

 Collected 15 miles northeast of Ching-ning-chow, Kansu, China (altitude 

 6,200 feet, July 27, 1909, by Arthur de C. Sowerby. Original number 225. 



Diagnosis. — Similar to Ochotona dauurica (Pallas) from the Mongolian 

 Plateau, but dorsal outline of skull less convex and audital bullae slightly 

 larger. Differs from 0. bedfordi Thomas, of Shensi, and Shansi, China, 

 in smaller size (particularly of skull) more convex upper cranial outline, 

 and much smaller audital bullae. 



* Measurements in parenthesis are those of an adult male Microtus mandarinus from 

 the vicinity of Tai-yuan-fu, Shansi. 



