546 Bulletin American Museum of Natural History. [Vol. XXXIV, 
the white extending as a broad band down the leg two thirds of the distance to the 
hock; interramial space and throat whitish, with a brownish band across the former; 
upper lip faintly edged with whitish; sides of neck cinnamon drab; legs in front like 
the body, posteriorly pale cinnamon rufous; ears dark brown, like the top of the head; 
tail very short, dark brown above, white below. 
In the adult male type the pelage is thin and short; in the young female topotype 
it is much longer and thicker, and the rufous vermiculation on the tips of the hairs 
much stronger. 2 
Represented by the type, an old male, and a young female topotype. 
Skull, male type, total length, 210; condylobasal length, 200; occipitonasal 
length,— (nasals imperfect); preorbital length, 105; zygomatic breadth, 96; orbital 
breadth, 94; interorbital breadth, 56; occipital breadth, 64; breadth of braincase, 
61.5; maxillary toothrow, 65; m!~3, 29. Ratio of preorbital length to condylobasal 
length, 52.2%. Length of antlers from burr, 66 ; breadth of burr, 19; length of 
pedicel (inside), 11. 
M. fuscata differs from M. gualea in much darker coloration and much 
larger size. M. fuscata is from the tropical coast-belt, M. gualea from the 
interior at altitudes of 6000 to 12,000 feet. They are probably representa- 
tive forms of the same species. Neither of these forms is very closely 
related to M. zetta, judging by present material. In size M. fuscata ap- 
proaches typical M. americana of the Guianas. 
Mazama zamora sp. nov. 
Type (and only specimen), No. 36581, 9° ad., Zamora (altitude 2000 feet), south- 
eastern Ecuador, Oct. 22, 1913; W. B. Richardson. 
Hairs of back of neck not reversed. Bright yellowish red, redder over the mid- 
dle region of the back, paler on the sides and on the ventral surface; nape and ~ 
top of the head dusky; the tuft of long hairs on the front of the head mixed blackish 
and red; sides of interorbital region rufous ; facial region blackish brown; a small 
white spot on each side of the rhinarium; ears blackish brown ; chin ahd a median 
stripe on the lower throat white; upper throat buffy white, with a dusky brown spot 
on each side opposite the angle of the mouth, nearly meeting in the midline; color 
of the legs nearly uniform with the ventral surface ; inguinal region and inside of 
thighs white; tail above like the back, white below. 
Collector’s measurements, total length, 1370 mm.; tail vertebre, 80. Skull 
(teeth much worn), total length, 204 ; condylobasal length, 193; occipitonasal length, 
174; preorbital length, 104; zygomatic breadth, 87; orbital breadth, 87; inter- 
orbital breadth, 40.6; occipital breadth, 61.5; breadth of braincase, 61; nasals, 
64 22; maxillary toothrow, 65 ee a) 
In bulk M. zamora is about twice the size of M. rufina, as shown by 
pertectly comparable skulls (old females), and the two forms also differ 
greatly in color, zamora being light red and rufina dark red, and much 
blacker on the head, nape, ears, throat and limbs. The condylobasal length 
