G2 Bulletin American Museum of Natural History. [Vol. XXXIV, 
molars will readily separate skulls of Mazama from those of Blastocerus, but 
not from those of Odocoileus. "The members of the red group are not readily 
separable from the members of the brown group by the skulls; in some cases 
it would be impossible to identify skulls without the skins belonging to them 
as being either red or brown brockets. Coloration, and usually the character 
of the pelage, are the only distinctions that will serve to separate them. 
Rep BROCKETS. 
Mazama trinitatis sp. nov. 
? Cariacus, sp. THomAs, Journ. Trinidad Field Nat. Club, I, No. 7, p. 7 of separate, 
April, 1893. : 
Cartacus (Coassus) nemorivagus ALLEN and CuHapman, Bull. Amer. Mus. Nat. 
Hist., V, p. 228, Sept. 21, 1893. Skull only. 
Mazama rufa (F. Cuvier) ALLEN and CHapMan, ibid., IX, p. 22, Feb. 26, 1897. 
Skin and skull. 
Type, No. T34 5 Q ad., Caparo, Trinidad, March 13, 1894; Frank M. Chapman. 
Size large. Pelage thin, hairs of the nape reversed. Premaxillaries broadly 
in contact with the nasals. 
General color of upperparts of body cinnamon rufous, paler on the sides and 
_ much paler on the belly; throat and inguinal region white; tail above like the back, 
white below; legs dull cinnamon brown, somewhat lighter posteriorly; ears dull 
brown, externally the hairs very short; crown dark brown, the hairs tipped with 
rufous; no white eyespot; white on lips greatly restricted. 
Collector’s measurements: Total length, 1118 mm.; tail vertebrae, 127; height 
at shoulder, 645; girth, 711; fore leg, 396; ear, 89; tip of nose to base of ear, 205.5. 
Weight, 803 pounds, including a footus which weighed 6 pounds. | 
Two skulls, adult female (type) and adult male: Total length, 7 220 9 210; 
condylobasal length, « 210, 2 203; occipitonasal length, 188, ? 178; preorbital 
length, o 115, 2 104; zygomatic breadth, 3 99, 9 —-; orbital breadth, o 100, 
? 92; interorbital breadth, «7 48, 9? 42; occipital breadth, o& 65.5, @ 61.5; breadth 
of braincase, # 62.5, 2 60.7; nasals, 7 63 & 29,2 63 X 25; maxillary toothrow, 
ow 68, 2 62.5; m', 9 30, 9 28; right antler from burr, 118; diameter of burr, 
21.6; pedicel (inside), 12. In the female skull (type) the teeth are much worn, but 
in the male skull they are only slightly worn. 
‘Represented by the skin and skull of an old female (the type) and the skull of an 
adult male. | 3 : 
In size M. trinitatis closely approaches M. americana tumatumari of 
Guiana, the largest of the red brockets, but while the latter is dark chestnut 
red in general coloration, with the top of the neck, head, and ears nearly 
black, in strong contrast with the body, the color of M. trinitatis is light 
cinnamon rufous, with the top of the neck as light colored as the body, and 
the head and ears only a little darker, and hence not in strong contrast with 
the general coloration. : 
