1871.] MR. P. L. SCLATER ON ANIMALS IN THE MENAGERIE. 225 



I have now taken the typical specimen of A. variegatus to the 

 British Museum, and compared it with the type of A. bartletti and 

 with the specimen obtained from Mr. Gordon. The conclusion I have 

 arrived at is that all three specimens are referable to one species. 

 As to the two first there can, I think, be no doubt whatever, as they 

 agree in every particular except in the smaller size and fainter tinge 

 of the colour below in the Nattererian specimen, which is just what 

 we should expect to find in the female. Mr. Gordon's example is 

 still paler below, and shows no signs of the white stripe on the sides 

 of the face. But there is a slight indication of the frontal spot, and 

 the character of the hair on the head agrees completely with that of 

 the other two specimens. 



On the whole, therefore, I believe that Dr. Gray was correct in 

 referring Mr. Gordon's specimen to his A. bartletti (i.e. A. varie- 

 gatus). 



In a recent article on the Mammals of Costa Rica*, Dr. A. von 

 Frantzius states that a number of skins of an Ateles, collected by 

 him in Costa Rica and sent to the Berlin Museum, were determined 

 by Dr. Peters to be A. variegatus. This appeared to me to be such 

 an extraordinary locality for the present species that I wrote to Dr. 

 Peters to inquire on the subject. Dr. Peters informed me that Dr. 

 v. Frantzius had made a mistake, and that the only skins of Ateles 

 received from Costa Rica by the Berlin Museum were, in his opinion, 

 referable to A.frontatus (Gray), i.e. A. melanochir f. 



Dr. Slack, in his article on the prehensile-tailed QuadrumanaJ, 

 has likewise confounded Ateles variegatus with A. melanochir, de- 

 scribing A. variegatus as the male, and A. melanochir as the female 

 of the same species ! But the plate in Reichenbach's Atlas (Nat. 

 d. Affen, pi. x. fig. 154), which is referred by Dr. Slack and Dr. Gray 

 to A. melanochir, although not very good, as well as the description 

 (p. 62), are both clearly intended for A. variegatus; indeed Reich- 

 enbach tells us that they were taken from the typical specimens of 

 that species in the Vienna Museum. 



The synonyms of Ateles variegatus will therefore stand as fol- 

 lows : — 



Ateles variegatus. 



Ateles variegatus, Wagner, Saugeth. i. p. 313 (1840) ; ej. Abh. 

 Acad. Miinch. v. p. 420 (1847); ej. Saugeth. v. p. 78 (1855); Reich- 

 enbach, Affen, p. 62, pi. x. fig. 154 ; Sclater, Ann. Nat. Hist. ser. 4, 

 vol. vi. p. 472 ; ej. P. Z. S. 1870, p. 663, 1871, p. 39. 



Sapajou geoffroii $ , Slack, Proc. Ac. Sc. Phil. 1862, p. 511. 



Ateles bartletti, Gray, P. Z. S. 1867, p. 992, pi. xlvii. (d); ej. 

 Ann. Nat. Hist. ser. 4, vol. vi. p. 428 ( ? jr.). 



* Arcb. f. Nat. 18«9, pt. 1, p. 257. 



t Dr. v. Frantzius must likewise have made some strange mistake when he 

 speaks of an Eriodes frontatus, Gray, from Costa Rica (/. s. c. p. 258). The 

 genus Eriodes is, I believe, restricted to the wood-region of S.E. Brazil ; and 

 Brnchyteks frontatus, Gray, is certainly a true Atefcs. 



t Proc. Acad. Sc. Phil. 1862, p. 511. 



Proc. Zool. Soc— 1871. No. XV. 



