268 ALOUATTA 



between the latter and the colored figures, and the present seems to 

 be a striking case of this unfortunate state of affairs. 



Spix's description of discolor in several points leans more towards 

 this species than it does towards his type, which is a rather small young 

 adult black example with fingers, toes and tip of tail pale rusty red, 

 and is most probably a young example of A. beelzebul while his 

 description and figure do not agree in several particulars, viz., "Les 

 quatre pieds sont presque entierement d'un noir luisant, excepte les 

 doigts tres allonges, qui sont garnis de poils courts et roux," while his 

 figure shows brown feet and blackish brown hands ; and of the body he 

 says "le tronc rougeatre au milieu, et noir luisant aux cotes," which does 

 not describe any species of Alouatta known, and his figure exhibits an 

 animal with a blackish brown back and reddish flanks and shoulders; 

 while the type is black with only a very faint brownish tint on the 

 flanks. "La queue pas epaisse est noire * * * et rougisseante au 

 bout" which is correct of the type itself, but the figure has a black tail 

 for the entire length. 



Spix's figure more nearly represents a male A. beelzebul with an 

 immature coat, retaining in some respects the colors more like the 

 female upon the flanks and under parts, though somewhat too red on 

 the flanks, but regarding it in all its coloring it is more nearly a figure 

 of a young adult male A. beelzebul which the type specimen itself 

 would seem to prove to be the fact, while Spix's description cannot be 

 applied to any species of Howler known at the present time. I am 

 greatly indebted to my friend Mr. Dollman for the opportunity of 

 describing this distinct species. 



Alouatta villosus (Gray). 



Mycetes villosus Gray, Ann. Mag. Nat. Hist., XVI, 1845, p. 220 ; 

 Reichenb., Vollstand. Naturg. Affen, 1862, p. 76, no fig. ; Id. 

 Cat. Monkeys, Lemurs and Fruit-eating Bats, Brit. Mus., 

 1870, p. 41 ; Sclat, Proc. Zool. Soc. Lond., 1872, p. 6, fig. in 

 text; Schleg., Mus. Pays-Bas, Simiae, 1876, p. 151; Alston, 

 Biol. Centr. Amer., Mamm, I, 1879, p. 5, pi. I; Forbes, 

 Handb. Primates, I, 1894, p. 199. 

 Guatemalan howler. Mono, native name. 



Type locality. Guatemala. Type in British Museum. 

 Geogr. Distr. Eastern and north eastern Guatemala; Honduras. 

 Color. Entire pelage, hands, feet and tail jet black, base of hairs 

 Prout's brown. 



