530 Bulletin American Museum of Natural History. [Vol. XXXIV, 
species. As these deer are difficult for even the professional collector to 
capture they must remain for a long time imperfectly known. Both brown 
and red brockets have been known for three fourths of a century to occur 
throughout the greater part of Peru but the number, character, and re- 
lationships of the forms inhabiting this diversified area are at present quite 
unknown. The same is also true of other vast areas of South America. 
Prior to 1850 all the brockets known were currently referred to two 
species. In 1878 Sir Victor Brooke, in his review of the Cervide,! recog- 
nized six, but only four of them as well established. He says of them (I. c., 
p. 926): “It is now many years since I commenced the study of this difficult 
group of Cervide; but although I have examined the specimens contained 
in nearly all the continental museums, and made a private collection of 
some importance, I must confess that I am still far from a satisfactory 
understanding of the subject. The complete absence of cornual and cranial 
characters renders it exceedingly difficult to grasp the characteristic peculiar- 
ities of the different modifications of the form, six or seven of which are, 
I think, probably persistent, and worthy of specific recognition by natura- 
lists.” Lydekker, in 1898,? recognized seven species, but only six of them 
are well founded. | 
In the present paper 24 forms are recognized as probably valid, of which 
7 are here first described, while 6 of the others have been described within 
the last three years. Following is a list of them with their type localities. 
Species and Subspecies of Mazama with their type localities. 
Rep BRocKETs. 
Mazama trinitatis sp. nov. Caparo, Trinidad (p. 532). 
Mazama americana americana (Erxleben). Cayenne (p. 533). 
Mazama americana tumatumari subsp. nov. Tumatumari, British Guiana (p. 536). 
Mazama americana juruana subsp. nov. Rio Juruana, Venezuela, near border 
of British Guiana (p. 537). 
Mazama rufa rufa (Illiger). Paraguay (p. 538). 
Mazama rufa jucunda Thomas. Sierra do Mar, Parana, Brazil (p. 539). 
Mazama sheila Thomas. Lowlands near Merida, Venezuela (p. 539). 
Mazama rufina (Pucheran). Val de Lloa, western slope of Mount Pichincha, © 
Ecuador (p. 540). 
Mazama bricenti Thomas. Paramo de la Culata, Merida, Venezuela (p. 540). 
Mazama sartorti sartorit (Saussure). Mirador, State of Vera Cruz, Mexico 
(p. 541). : . 
1 On the Classification of the Cervide, with a Synopsis of the existing Species. Proc. 
ool. Soc. London, 1878, pp. 883-928, pl. lv, text fig. 1-19. 
2 Deer of All Lands, pp. 298-306. 
