ALOUATTA 273 



mixed golden and brownish black, golden predominating, the hairs 

 being golden banded with black and tipped with golden ; long hairs on 

 flanks golden ; hairs on under parts scantily distributed, mummy brown. 

 Ex type United States National Museum. 



Measurements. Total length, 1,190; tail, 651; foot, 148. Skull: 

 occipito-nasal length, 91.9; Hensel, 88.4; zygomatic width, 80.5 ; palatal 

 length, 48.9 ; intertemporal width, 40.2 ; median length of nasals, 19.8 ; 

 length of upper molar series, 32 ; length of mandible, 86.4 ; length of 

 lower molar series, 39. Ex type United States National Museum. 



The type is an extreme example, as there is an entire absence of 

 the jet black hue on the upper parts to be seen to a more or less con- 

 siderable extent in other specimens, some indeed having the upper parts 

 nearly all black with very little golden to be seen, these being the other 

 extreme. 



A series of specimens of this subspecies from southern Vera Cruz 

 establishes the fact that it is a much duller colored animal than the one 

 from Central America, the flanks having none of the golden rufous 

 witnessed, for example, in specimens from Chiriqui 



Alouatta palliata coibensis Thomas. 



Alouatta palliata coibensis Thos., Novitat. Zool., IX, 1902, p. 

 135 ; Elliot, Mamm. Middle Amer. and West Indies, F. C. M. 

 Pub., IV, Pt. II, 1904, p. 727; Id. Check-L. Mamm. N. Amer. 

 Cont. and W. Indies, F. C. M. Pub., VI, 1906, p. 533, Zool. 

 Ser. ; Id. Cat. Mamm. Field Columb. Mus., 1906, p. 556, Zool. 

 Ser. 



ISLAND OP COIBA HOWLER. 



Type locality. Coiba Island off west coast of Panama. Type in 

 British Museum. 



Genl. Char. Like A. palliata, but smaller. An insular race. 



Color. Head, upper part of back, arms, legs, hands, feet, and tail 

 black; middle of back Prout's brown, hairs tipped with golden; long 

 hairs on flanks shining ochraceous buff ; abdomen dark brown. Ex type 

 British Museum. 



Measurements. Total length, 1,140; tail, 580; foot, 130. Skull: 

 occipito-nasal length, 87; Hensel, 84; intertemporal width, 40; palatal 

 length, 36; breadth of braincase, 50; zygomatic width, 79; median 

 length of nasals, 15; length of upper molar series, 30; length of 

 mandible, 83 ; length of lower molar series, 37. Ex type British 

 Museum. 



