94 



DR. E. A. GOELDI OX MARMOSET 



[Jan. 15, 



plienomenal especially in the adult male. (Text-fig. 23 represents 

 the head of an old male individual.) 



Our Purus collections embrace five skins (and skulls) (3 c5' d" , 

 2 $ § ), two from the Rio Acre and three from the upper Rio 

 Purus. A family of three individuals ( c? $ adults, and a young- 

 one) are already mounted in the Para Museum ; the two 

 remaining {S , 2) skins, of half -grown specimens, are destined 

 to be sent to the Museums of Berne and London respectively. 



This species is distinguished by a more or less pronounced 

 reddish greyish-brown general colour of the dorsal side, light rust- 

 coloured abdominal side, dark feet, hands, and head, excepting 

 the white circumbuccal zone and the skull-cap, which tend to 

 become grey with age. 



Text-fiff. 23. 



Head of Midas imperator. 



Dorsal aspect. — The reddish-rust colour is more conspicuous in 

 the above mentioned old male, and is already noticeable in the 

 two young males (one stuflfed in the Para Museum and one skin). 

 General colour as above stated ; it may be noted, however, that the 

 greyish tinge, in the same way, is more pronounced in the female. 



On separating the fur nearly every one of the five specimens 

 presents a slightly diflerent appearance. In the two adult stujffed 

 specimens in the ParA Museum the lower half is uniformly dark ; 

 the outer half shows alternately a light zone, then a dark one, 

 followed by a light one and a dark one, the terminal zone being 

 again lighter, making five zones of equal breadth in the outer half 

 and giving the general impression of two equal pairs of light and 

 dark zones. 



