KURODA — ^NEW MAMMALS FROM JAPAN 
209 
inner surface of limbs pure white with ashy bases to the hairs j tail distinctly 
buffy on marginal parts and blackish on the median areaj upper surface of hand 
dusky, and that of hind foot grayish white; hairy part of soles grayish white; 
lower surface of toes naked. 
The type specimen was obtained by Mr. H. Orii at Uyenai, Prov. Iburi in 
Hokkaido, March 13, 1920, and was presented by him to my collection. The 
subspecific name is given in honor of the collector. 
Mustela rixosa namiyei subsp. nov. 
Mustela nivalis Linnaeus* subsp., Ktjroda, Annot. Zool. Japon., Vol. IX, 
p. 610 (1920). 
Characters.—Resemhles M. rixosa pygmoea (J. A. Allen) of Siberia, but the 
length of head and body longer and the tail decidedly longer. It differs from 
M. rixosa rixosa (Bangs) from Arctic America, by the smaller body. It also 
differs from M. rixosa eskimo (Stone), by the paler coloration of body, and by 
the somewhat longer tail. 
Dimensions of the type and other specimens 
SUBSPECIES 
LOCALITY 
HEAD 
AND 
BODY 
TAIL 
HIND 
FOOT 
EAR 
‘SEX 
DATE 
MEASURED 
BY 
M. r. namiyei* 
Awomori 
N. Hondo 
190 
— 
18.5 
11 
? 
— 
Kuroda 
M. r. namiyei 
Awomori 
N. Hondo 
'l90 
30 
20 
— 
9? 
November 9, 
1907 
Namiye 
M. r. namiyei 
Near Sap- 
poro, 
Hokkaido 
200 
26 
20.5 
11 
? 
December 20, 
1899 
Kuroda 
M. r. pygmoea 
Siberia 
158 
16 
21 
— 
9 
October 2, 1900 
J. A. Allen 
M. r. pygmoea 
Siberia 
184 
19 
23 
— 
cf 
January, 1902 
J. A. Allen 
M. r. pygmoea 
Siberia 
166 
13 
19 
— 
9 
January, 1902 
J. A. Allen 
M. r. eskimo . . 
Alaska 
204,230 
28,31 
20 
— 
2crs 
— 
Stone 
M. r. eskimo . . 
Alaska 
178-184 
22-25 
16- 
23 
39s 
Stone 
* Type specimen. 
Comparative measurements of skulls of namiyei and pygmoea 
SUBSPECIES 
GREATEST LENGTH 
BASILAR LENGTH 
ZYGOMATIC BREADTH 
INTERORBITAL CON- 
STRICTION 
ROSTRAL BREADTH 
OVER CANINES 
OCCIPITAL DEPTH 
MASTOID BREADTH 
LENGTH OP BULL.® | 
i4 
2 
Q 
< 
s 
UPPER TOOTH-ROW 
LOWER TOOTH-RGW 
MEASURED 
BY 
M. r. namiyei 
M.r. pygmoea 
31.5 
28.5 
30 
17 
13.3 
7.5 
5.5 
9 
14.5 
12.5 
11 
16 
8.5 
10.5 
Kuroda 
J. A. Allen 
