N...1269. ANDAMAN AND NICORAR MAMMALS— MILLER. 759 
MUS MUSCULUS Linnaeus. 
1859. Mus manei Blyth, Journ. Asiat. Soc. Bengal, XXVIII, p. 271. 
The house mouse was recorded from the Andamans by Blyth. The 
specimens to which he referred were taken at Port Blair, The animal 
is apparently unknown in the Nicobars. 
MUS PALMARUM Zelebor. 
1861. ifus palmarum (adult) and Mus novanr. (immature) Fitzinger, Sitzungs- 
ber. Math. — Naturwissensch. CI. Kais. Akad. Wissensch., Wien, XLII 
(1860), pp. 385, 394. 1861. {Nomina nuda.) 
1869. Mus palmarum Zelebor, Raise der osterreichischen Fregatte Novara, 
Zool., I (Wirbelthiej-e), 1, Mamm., p. 26. (Nicobar Islands. ) 
The very clear and detailed description of this rat leaves no doubt 
that the animal is distinct from 3fus rattus and somewhat closely allied 
to the laro-e Mus stoicus and Mm taciturnus of the Andamans. Its 
dimensions alone are sufficient to separate it from the black rat and 
allied forms. Some of the measurements are as follows: Head and 
body, 275 mm.; tail, 215; hind foot, 50; greatest length of skull, 54; 
greatest breadth of skull, 25. In the members of the group to which 
the black rat belongs the hind foot seldom reaches a length of 40 mm., 
and the greatest length of skull is rarely over 45 mm. The pattern 
of enamel folding in the molar teeth of Mus }xilmarrmn apparently 
differs in several important particulars from that of Mus rattus and 
its allies; but the animals are too distinct to require detailed com- 
parison. 
The palm rat is said by Zelebor to be not uncommon in the Nicobar 
Islands, where it occurs mostl}^ in the crowns of the palms, leaping 
from tree to tree with much agility. It was not met with by Dr. 
Abbott. 
MUS STOICUS, new species. 
7Vi?<?.— Adult male (skin and skull) No. 111S34, U.S.N. M. Collected 
on Henry Lawrence Island, Andamans, January 9, 1901, by Dr. W. L. 
Abbott. Original number, 820. 
Characters. — A large, heavily built rat, bearing a general likeness to 
Mus validus and Mus palmarum. Tail considerably shorter than head 
and body, unicolor. Fur of back moderately spinous. Underparts 
bluish gray. Mannuie apparently ten. Skull as long as that of Mus 
validus, but very slender. Teeth with normal enamel pattern, the 
length of upper molar series (alveoli) in adults less than half diastema. 
Fur. — Underfur rather scant, much less dense than in ^his validus 
or Mus norvegicus, but not peculiar in quality; it is most abundant on 
flanks and lumbar region. Main body of fur composed of two ele- 
ments, soft terete hairs and stiff' grooved bristles. On middle of back 
these are about 15 mm. in length, but the hairs usually a little exceed 
the bristles. Width of bristles on back about .33 mm. On under- 
parts they become much more slender and are scarcely to be distin- 
