CEBUS 97 



all that remains of Geoffrey's "ventre roussatre." Ex Geoffrey's speci- 

 men in Paris Museum. 



Measurements. About the size of an ordinary Capuchin. Total 

 length, 828.2; tail, 393.7: foot, 120.6. Skull, not the type: occipito- 

 nasal length, 88 ; Hensel, 72 ; zygomatic width, 62 ; intertemporal 

 width, 43 ; median length of nasals, 12 ; length of upper molar series, 

 21 ; length of mandible, 62 ; length of lower molar series, 25. 



Undoubtedly the delicate yellows of the above described example 

 have all faded from their original richer hues, even that on the hairs of 

 the back, though protected in a great measure from the light by the 

 black tips, having in many places lost the golden hue and become a pale 

 yellow. The specimen is a young animal, in ragged pelage, and was 

 given to the Museum in March 1810, evidently without any locality 

 attached, for the only country associated with it, is the statement 

 beneath the stand "II vient sans doute de Bresil." 



What has become of E. Geoft'roy's type is not known. 



With specimens of C. variegatus, and type of C. crassiceps 

 before me it is effectually demonstrated that Schlegel was wrong in 

 making the latter a synonym of the former, (Simise, p. 209), for they 

 are totally dissimilar, having an entirely different style of coloring, and 

 CRASSICEPS has prominent tufts on the head. Making all allowance for 

 possible variations, which are well known to occur in members of the 

 different species of this genus, it is hardly to be conceived that these 

 two examples represent the same species ; for if they do, we might 

 just as well place all these monkeys under one name and give up all 

 further attempts to separate them into various distinct forms. 



This is an exceedingly variable species, the specimen described 

 being as near the typical style is it seems possible to reach. The types of 

 C. suhcristatus Gray, and C. capillatus Gray, are in the British Museum 

 Collection. They are immature animals without localities, the first 

 having been obtained from Cross, a dealer in live animals, and the 

 latter from the Zoological Society, both having died in captivity. The 

 character given to separate these from other members of the genus 

 was chiefly the manner of growth of the hairs on the crown. This at 

 the best is but an unsatisfactory and unreliable character, if it may 

 be called one in a skin, and hardly sufficient to establish a species. The 

 hair on the crown of C. subcristattis is in position and probably exhibits 

 it as when the animal was alive, but that of C. capillatus is much 

 mussed and it cannot well be determined how it was during the life of 

 the animal. The specimens closely resemble each other in color, have 



