CEBUS 81 



Cauda nigra" ; also, "sub mento vellus breve, densum, atrum, pingue," 

 one of the characters of capucinus Auct. The general description 

 given in the Mus. Reg. Ad. Fred., exactly covers capucinus Auct., and 

 the plate gives most of the characteristic markings, such as the black 

 cap on the head extending down the sides of the face and under the 

 chin, and the black hands, feet and tail. In both editions of the 

 Systema Naturae, 1758 and 1766, the Mus. Reg. Ad. Fred, is the only 

 work cited, and the descriptions are too brief to determine the species, 

 while that in the work, where the form was first named, is fairly 

 comprehensive. 



Cebus annellatus Gray, the type of which is before me, appears 

 to be nothing but what I call apella Linnaeus, capucinus of Authors, 

 in one of its many varietal colorations. The yellowish white of the 

 temple extends to the top of the head leaving but a narrow black line 

 down the center. The body is pale reddish, the limbs and under parts, 

 tail, hands and feet like ordinary apella. Mindful of the immense di- 

 versity of color exhibited by this species, which is dependent neither 

 upon locality, age nor sex, but is simply individual, I have no hesitation 

 in referring Gray's type to the present species and include its name 

 among the synonyms. 



Cebus olivaceus Schomburgk (1. c). The description given of this 

 form, seems nearest to C. apella, but there are discrepancies such as 

 "Ausnature der Schultern und Oberarme, die strogelb aussehn," which 

 leans more towards C. fatuellus (Linn.), for I do not recall any 

 specimen of C. apella at any age with the upper part of arms straw- 

 yellow. This part is often very light colored and sometimes in immature 

 animals approaches a yellowish tinge, but never so far as I have seen 

 a straw-yellow. But as the greater part of Schomburgk's description is 

 nearer C. apella (Linn.), than it is to any other species, and C. 

 FATUELLUS (Linn.), is a native of the western part of the continent, 

 I have placed it among the synonyms of the former species but with an 

 interrogation mark, for I know no other species from the Guianas to 

 which it can be referred. 



The type of Cebus hypomelas Pucheran, is in the Paris Museum, 

 and while the upper parts are Prout's brown, the flanks are redder 

 or more russet than is usually seen in typical C. apella, yet mindful of 

 how the species varies in coloration, it seems best to refer Pucheran's 

 type to the older known form. The type has no history beyond what 

 is written on the bottom of the stand "Achete a M. Perdrinelli le 8 

 fevrier 1854, mort a la Menagerie le 11 fevrier, 1854." It therefore 

 lived only three days after its purchase. Its patrie is quite unknown. 



