NO. 1269. ANDAMAN AND NICOBAR MAMMALS— MILLER. 789 
MACACUS UMBROSUS, new species. 
1.S46. Macacus cynomolgus Blyth, Jonrn. Asiat. Soc. Bengal, XV, p. 367. (Nico- 
bar Islands) . 
1869. {Tnvus ajnomolr/us'] var. a, Cercocehus carbonarius Zelebor, Reise der oster- 
reichischen Fregatte Novara, Zool., 1 (Wirbelthiere), 1, Mamm., p. 7. 
(Great Nicobar Island.) 
7y//>^^— Adult male (skin and skull), No. 111795, U.S.N.M. Col- 
lected on Little Nicobar Island, Nicobars, February 25, 1901, b}^ Dr. 
W. L. Abbott. Original number, 888. 
Charactrvs. — Similar to the Macacus ''cynomolgus' of the Malay Pen- 
insula, but nuieh darker and less j^ellowish in color. General hue of 
upper parts hair-brown, the hairs with faint pale annulations, but with 
no, trace of tawny. 
Color. — Upper parts and outer surface of limbs nearly uniform hair 
brown, with a faint tinge of drab, the latter becoming more pronounced 
on sides. About 3 mm. below the tip of each hair is a dull cream buff 
annulation 3 mm. to 4 mm. in width. These light rings, together with 
the glossy texture of the hairs, give the fur a changing aspect as 
viewed in different lights. They are slightly more numerous on crown, 
nape, buttocks, and posterior surface of thighs than elsewhere. On 
the crown and nape they are very sharply defined, but on buttocks 
and thighs they lose their distinctness, at the same time increasing in 
length. Tail dark drab above, almost black on proximal half, pale 
drab below. Under parts and inner surface of liml)s scantily clothed 
with pale drab hairs of very silk}^ texture, those bordering mouth dis- 
tinctly darker than elsewhere. 
Skull and teeth. — The skull and teeth so closely resemble those of 
Macaciis '"''cynomolgus''^ that I can detect no tangible differences. 
Measurements. — For external measurements see table, page 790. 
Cranial measurements of type: Greatest length (exclusive of incisors), 
134 mm.; basal length, 102; basilar length, 96; least palatal length, 
57; palatal breadth (between front molars), 25; zygomatic breadth, 
90; mastoid breadth, 71; greatest breadth of braincase above roots of 
zygomata, 61; least breadth of braincase immediately behind orbits, 
39; orbital breadth, 67; least distance from orbit to alveolus of inner 
incisor, 49; greatest depth of braincase (exclusive of sagittal crest), 
50; mandible, 97; greatest depth of ramus, 19.6; maxillary tooth row 
(exclusive of incisors), 44.6; mandibular tooth row (exclusive of 
incisors), 50; crown of middle upper molar, 8.8 by 9; crown of middle 
lower molar, 8.2 by 7.4. 
Specinnens examined. — Eight, from the following islands of the 
Nicobar group: Great Nicobar, 4; Little Nicobar, 2; Katchal, 2. 
Remarks. — The series of eight specimens includes individuals of all 
ages from half-grown 3'oung to aged adults. Throughout the color is 
