Descriptions of East Asiatic Mammals 279 
are so much like each other that they can be distinguished only 
with great difficulty. 
The Chinese House Mouse, M. m. bactrianus, differs from 
the True House Mouse by having the feet and the underside of 
the tail whitish. In some local forms the tail may be longer than 
the head and body, in others shorter. Mus m. vinogradovi has 
the underparts somewhat whitish also; the length of the head 
and body 3% inches, tail 3% inches, hind foot % inch. The 
race in Yunnan, Tonkin, Laos, and Annam is M. m. kakhyensis. 
Mus m, taiwanus is recorded from Formosan houses (Kur- 
oda). 
The Jungle Mice, genus Leggada, are tropical animals of 
Burma, India, and Ceylon. Some of the Indian species are spiny. 
Leggada is often distinguishable from the House Mice, Mus, 
by its longer snout, best observed when the skull has been 
extracted and cleaned, and from Micromys and Apodemus by 
having only two tubercles composing the posterior one of the 
three transverse ridges on the first two molar teeth. Leggada 
may be merely a subgenus of Mus. 
The typical species of Leggada is L. booduga of Bombay, 
western India, "mouse-colored varied with brown; beneath 
grayish white. Under fur lead colored, with pale, slender, 
grooved, black tipped bristles." The length of the head and 
body amounts to 2 inches, hind foot % inch. This genus, of 
which the following three species are well-known examples, 
occurs through India, Burma, and Indo-China. 
Leggada nitidulus of Burma and Annam is colored gray- 
brown, with the underparts dull white. The bases of the hairs 
are gray. The total length is 6% inches. The place where this 
form was first found is Shwe Gyeng, lower Burma. A race, 
L. n. annamensis, comes from Annam and Laos. L. cookii of 
the northern Shan States and Yunnan is larger than L. booduga 
— the length of head and body 3 1 /2 inches, tail 3% inches, foot 
% inch. The hairs of the underparts are gray with white tips, 
