ALOUATTA. 



727 



sides bronze yellow brown, hairs tipped with black; lower part of 

 sides brownish yellow; tail black; hands and feet black; under parts 

 sparsely covered with brown hairs. The depth of the black or blackish 

 brown general color, and the space covered by yellowish brown or 

 fulvous on back and loins varies considerably. 



FIG. CXXXVIII. ALOUATTA PALLIATA. MANTLED HOWLER. 



Measurements. Total length, 1142; tail vertebrae, 585; hind foot, 

 145 (skin). 



a. nifjcicfimi (Alouatta), Merr., Proc. Biol. Soc. Wash., 1902, p. 67. 

 MEXICAN HOWLER. 



Type locality. Minatitlan, State of Vera Cruz, Mexico. 



Gcogr. Distr. Eastern Mexico. 



Genl. Char. Like A. palliata, but smaller; rostrum narrower; 

 zygoma without the "hump" on upper side posteriorly; coronoid 

 process broadly rounded ; teeth small. 



Color. Similar to A. palliata. 



Measurements. Total length, 1190; tail vertebras, 651 ; hind foot, 

 148. (Merr., ex Type.) 



b. coibciiKis (Alouatta), Thomas, Novitat. Zool., ix, 1902, p. 135. 



