ARKIV FÖR ZOOLOGI. BAND 14. N:0 4. 



Ateles variegatiis Wagner. 



1 (^ 2oy^ 1918, below Baeza, 4,000 feet altitude. 



The semilunar frontal band is white with a buffish tint. 

 The side whiskers are white. The inner side of the arms 

 greyish white like the Jower parts; towards the inguinal 

 region the colour is somewhat buffish, and the same is partly 

 the case with the inside of the hind legs. Lower side of tail 

 »yellowish buff» (Oberthur & Dauthenay 310, 2) faintly 

 overlaid with dark tips to the hairs. This appears different 

 from Elliot's description, when he speaks about the »rufous» 

 band across the forehead, the »orange yellow» inside of arms 

 and legs and underparts and »orange» beneath the tail. 

 With only one specimen on hand it is difficult to decide, 

 how great the variation in colour is. 



Cebus sp., ef. cusciniis Thomas. 



? ^V«^ c? i^^- ^Vio 1919 near Rio Curaray, Oriente, Ecu- 

 ador, 1,000 feet altitude. 



These specimens have a certain resemblance to Cehus 

 flavescens ciiscinns Thomas, but are less reddish on the back, 

 and not »ochraceous rufous» on the lower side and inside of 

 arms and legs, the colour of these parts being yellowish 

 white in the female and dirty white in the young male. As 

 no adult male is present in the collection, and the variabi- 

 lity of the members of this genus is great, it appears most 

 suitable to leave the exact determination to the future. 



Cebus aequatorialis Allén. 



A young male collected below Gualea, 3,000 feet alti- 

 tude, Vö 1917, and a female from Gualea, 5,000 feet altitude, 

 Ang. 1910. 



Both these specimens are evidently considerably darker 

 than Allén 's type of C. aequatorialis, the upper parts of 

 which are described as »påle cinnamon rufous», while the 

 same of these specimens are more similar to »mars brown» 

 resp. »Prouts brown» according to R,idgway's nomenclature. 

 The occiput is decidedly darker being blackish brown or a 



