1905. | MAMMALS FROM JAPAN. 345 
believed that it was ‘“semi-adulte.” This course, besides making 
the figure fix the type, has the advantage of giving at least one of 
the two forms an exact typical locality, whereas if the name 
momonga were applied to the large form and a new name given 
to the small one, the typical locality of neither would be definable. 
We may thus treat the British Museum 1844 specimen as a 
co-type, as it was one of those on which the description was based 
and agrees absolutely with the typical figure. This specimen, far 
from being ‘‘semi-adulte,” is absolutely full-grown, its teeth 
showing more evidence of wear than is the case with any of 
Mr. Anderson’s examples. 
The new subspecies may be briefly described as similar to true 
momonga, but conspicuously larger and with a much longer tail. 
The co-type above referred to has a skull measuring 36 x 20 mm., 
Temminck’s figure is 35°D x 21:5; while the smallest of the Nara 
skulls is 41x 23°5. The hind foot of momonga is just 30 mmn., 
that of amygdali 37-38. 
In colour there is probably little difference, but direct com- 
parison is not possible, as the co-type of momonga is in the brown 
summer pelage. ‘The new form, in its winter pelage (January), 
has its dorsal hairs blackish slaty, washed terminally with isabella, 
tending sometimes towards buffy. Cheeks and under surface 
white, the hairs slaty basally. Under side of membranes irregu- 
larly washed with pale fawn. Upper surface of hands and feet 
grizzled black and fawn, a prominent tuft of longer hairs at the 
end of each hind toe clear isabella. Tail subdued wood-brown, 
washed above and below with black. 
Skull larger and heavier in every way than that of true momonga. 
Dimensions of the type, measured in the flesh :— 
Head and body 166 mm.; tail 139; hind foot 38; ear 25. 
Skull—greatest length 42:2; basilar length 31:5; greatest 
breadth 26; length of nasals 13:6; breadth of brain-case 19 ; 
palatilar length 17-7; palatal foramina 4°3; length of upper tooth- 
series, exclusive of p’, 6:8, 
Type. Adult male. B.M. No. 6.1.4.122. Original number 257. 
Killed 27 January, 1905. 
It is probable that the smaller form, to which I restrict the 
name momonga, will prove to be an inhabitant of one of the 
southern islands, while the larger one is no doubt spread widely 
over Hondo. 
‘“‘ Brought to me by a servant after my departure from Washi- 
kaguchi. They were taken near the top of a rather high 
mountain, in a forest of Chamccyparis. Regarded by the peasants 
as the young of the Petaurista, and therefore called ‘ Bandari.’”— 
ESE Ab 
24, SCIURUS VULGARIS ORIENTIS, subsp. n. 
3. 98,102. @. 103. Aoyama, Hokkaido. 
Ce oa eel Og Olio eS eS ls2 lao. M38. Nobori- 
betsu, near Moruran, Hokkaido. 
24* 
