1915.] Allen, American Deer of the Genus Mazama. SOF 
91; interorbital breadth, 51; occipital breadth, 72.5; breadth of braincase, 67; 
maxillary toothrow, 73.5; m!~3, 42. 
This is much the largest and one of the darkest forms of the red brocket 
known to me, M. d. juruana (described below) being the next in size, while 
M. fuscata of the coast region of Ecuador is still darker. It evidently differs 
much in coloration from the red brocket of Cayenne, described in great 
detail by G. Cuvier (/. ¢.) and again by Pucheran (i. c.), both of whom give 
the color of the body above as bright rufous, and make no mention of the 
dark or blackish color of the legs, which is a conspicuous feature in the form 
here described, the legs being blackish instead of merely “brun foncé.”’ 
Season, or rather the condition of the pelage, may make some difference 
with the coloration, the freshly acquired coat being doubtless more deeply 
toned than the same coat would be at the end of several months, or just 
before the moult, but in series of specimens of other species of brockets 
taken at different seasons of the year there is no very marked difference. 
On the other hand, individuals taken in the same month of the year may 
present quite a strong difference in coloration, but not so great as between 
the type specimen of tumatumart and Cayenne specimens, as described by 
the Cuviers and by Pucheran. 
Mazama americana juruana subsp. nov. 
Mazama rufa ALLEN, Bull. Amer. Mus. Nat. Hist., XXX, p. 247, Dec. 2, 1911. 
Type, No. 30624, 2 ad., Rio Juruan, Venezuela (near Guiana boundary), March 
21,1910; M. A. Carriker, Jr. 
Size large; hair on nape reversed. Upperparts intense bright rufous, slightly 
darker on back, a little paler on sides; back of neck and top of head dull brownish, 
the long hairs on the crown tipped with rufous; the usual patch of white on the upper 
lip bordering the rhinarium; sides of head and neck dull pale buffy brown; chin, 
throat, and fore neck whitish with a buffy tinge; interramial space with a pale rusty 
patch opposite the angles of the mouth; breast and belly rufous like the flanks; 
inguinal region and lower abdomen white, the white extending down the inside of the. 
hind legs in narrowing band nearly to the hocks; outside of limbs dull brown, nearly 
like back of neck, fading to pale yellowish rufous on the metatarsus and digits; tail 
above bright rufous, white below; ears dark brown externally, white laterally at the 
base with a slight fringe of white. 
Collector’s measurements: ‘Length, 4 ft. 7 in. [1140 mm.]; tail, 6 in. [154]; 
circumference of chest, 2 ft. 5 in. [785]; height at shoulders, 2 ft. 8 in. [812].” 
In general size the skull agrees well with a female skull of M. americana tuma- 
tumart from British Guiana, but the maxillary toothrow is much shorter and some of 
the transverse measurements are much greater, others less, as follows: Total length 
(Juruan skull), 228; (Guiana skull), 234; condylobasal length, 214, 222; occipito- 
nasal length, 194, 190; preorbital length, 116, 124; zygomatic breadth, 100, 92; 
orbital breadth, 100, 91; interorbital breadth, 45, 51; occipital breadth, 65, 72.5; 
