1870. | MR. R. SWINHOE ON CHINESE MAMMALS, 637 
63. Mus Losna, sp. nov. (Brown Country-rat.) 
3. Length 6 inches, tail 3°75. Teeth broader than in the last, 
and of the same colour. General colcur of upper parts a rich brown, 
many of the hairs of the head and upper parts tipped with black, 
giving a dark appearance in some lights; fur soft and moderately 
long; under-fur dark slate-grey. Underparts dingy whitish ; legs 
brown, with a streak of whitish on each edge of fore foot. Ears 
moderate, naked. Moustache rather short. Tail brown, with 
minute black setze scarcely visible. 
This is also a Country-rat at Tamsuy, Formosa. 
64. Mus nrnGpoEnsts, sp. nov. (Short-eared Field-mouse.) 
Length 3°25; tail 2°75. Lower incisors longo-triangular. Kar °35, 
with short hair. Upper coat rich chestnut-brown, with deep slate- 
coloured under-fur ; lower parts and feet white. Moustache-bristles 
short and very fine. Fore foot minute ; hind foot -7 from tarsal joint. 
Tail light brown above, whitish below, with minute scattered white 
hairs. 
This little creature I picked up at Ningpo, in the consulate 
garden. It is a field-mouse; and “is,” says Dr. Peters of Berlin, 
‘nearly related to the European short-eared mice, M. agrarius and 
M. minutus, being larger than the latter, and without the dark dorsal 
streak of the former.” 
65. ?Mus saptus, Hodgson. (Long-tailed Field-mouse.) 
Mus ?, Swinhoe, P. Z. S. 1864, p. 382. no. 27. 
This long-tailed Field-mouse, with chestnut upper and whitish 
underparts, allied to M. sylvaticus, L., of Europe, appears to 
have a wide range in China, if I am right in identifying the one I 
got at Tamsuy with that I saw in Hainan. Unfortunately both the 
specimens I picked up were too mangled to preserve. I have 
therefore not been able to identify it. 

66. Mus arcenteus, T. & 8. Faun. Japon. (Yellow House- 
mouse. ) 
Mr. S. Bligh, at Canton, gave me a small fawn-coloured mouse, 
with light under parts and rather long tail, which answers well to 
the species described in the ‘ Fauna Japonica.’ I have not seen it 
from other parts of China. 
-67. Mus muscutus, L. (Common House-mouse.) 
Mus musculus, Swinhoe, P. Z.S. 1864, p.382. 
Occasionally seen in houses both in South China and Formosa; 
probably introduced. Black and white varieties are often kept by 
the Chinese ; these are brought from the Straits. 
68. Ruizomys cHINENSIS. (Chinese Bamboo-rat.) 
Rhizomys chinensis, Gray, P. Z. 8. 1831, p.95; Ill. Ind. Zool. t. 
This large Bamboo-rat was procured by Mr. John Reeves at 
Canton. I have not heard of it from other parts of South China. 
