774 ON MAMMALS FROM KTJATUN, CHINA. [NoV. 15, 



specimens may be obtained partly rufous and partly grey, a stage 

 that I have never seen in European series. 



" The common field-mouse of the Kuatun district." 



22. Mtjs HAE.TI, sp. n. 



Adult and young. 



Allied to Mus agrarius, of which it is the Chinese representative. 



Size and general appearance very much as in M. chevrieri. 

 Colour above dull grizzled rufous, not or but little brightening 

 posteriorly ; under surface dull white, the slaty bases of the hairs 

 showing through ; line of demarcation on sides fairly sharply 

 defined. Ears very short, well-haired, blackish, a few minute 

 silvery hairs intermixed with the black. Dorsal line very indistinct, 

 scarcely perceptible, very different to the strong and sharply- 

 deGned line of M. agrarius. Upper surface of hands and feet 

 white. Tail about as long as the head and body, thin, almost 

 naked, its scales dark throughout, its minute hairs dark above and 

 inconspicuously white below. 



Skull and dentition not appreciably diffei'ent from those of 

 M. agrarius. 



Dimensions of the type, in skin : — 



Head and body (appareutly stretched), 99 mm. ; tail, 92 ; hind- 

 foot (wet), 21-5. 



Skull : greatest length, 26 ; basilar length, 21 ; greatest breadth, 

 13-8 ; length of nasals, 9*6 ; interorbital breadth, 4*5 ; palate, 

 length from henselion, 12 ; diastema, 7*4 ; palatal foramina, 5x2; 

 length of upper molar series, 3"9. 



Type. B. M., No. 98.11.1.18, collected May 4th, 1898, by J. D. 

 La Touche. 



Besides these two specimens from Kuatun the Museum contains 

 a skill in spirit from Kiii-kiang on the Yang-tse, collected by 

 Mr. P. W. Styan in 1888, and one from Baksa, Formosa, obtained 

 by Mr. P. A. Hoist in 1893. 



On the other hand a specimen from Mantchuria, although 

 separable subspecifically \ shows, as might be expected, a much 

 closer resemblance to the strongly rufous and black-lined Mv^ 

 agrarius than to the South Chinese M. Jiarti. 



At Mr. La Touche's suggestion, I have named this species in 

 honour of Sir Robert Hart, the well-known Inspector-G-eneral of 



* Mus AGRARIUS llANTCIIURICUS, Subsp. 11. 



Similar to M. a. ti/picus iu all essential respects, but slightly larger, and of a 

 much brighter, richer, and more uniform rufous above and on the sides, the 

 grey tone present in typious being quite lost in the rich rufous of the Eastern 

 form. 



Dimensions of the type, in skin :— 



Head and body (apparently stretched), 116 mm. ; tail, 78 ; hind foot (wet), 

 19 ; ear (wet), 14. 



Skull : greatest length, 27 ; length of upper molar series, 4"1. 



Hab. Mantchuria. 



Ti/pe. B. M., No. 83.2.24.1. Collected by Dr. Janskowski, and presented 

 by the Branicki Museum, Warsaw. 



