42 ARKIV FÖR ZOOLOGI. BAND 14. NIO 4. 



nating with only a little sprinkling of påle yellow. The top 

 of the head is blackish brown sprinkled with orange yellow. 

 The snout is »orange rufous» (Ridgway 1912) or »rust red» 

 (Öberthur 318, 2), and the same is also the case with the 

 sides of the head, although they become brighter towards 

 the throat. A streak behind the ear »rust red». Lower side 

 »yellowish buff» (Öberthur 310, 4) with a white narrow 

 median line which in the male is partly obsolete. The buff 

 colour is brightest on the lower neck and inside the hind 

 legs inclining to rust red in the anal region. The lower side 

 of the tail and the pencil buffish white. 



The dimensions of the skulls are smaller than in the 

 typical M. milleri, and that of the male is smaller than that 

 of the female, although both are adult with closed basal 

 sutures. 



Type of 



, Q ■^- inilleri 



^ according 



to Allén 



Greatest length of skull 67 69,5 80 



Condylobasal » » » 64,5 68 73 



Zygomatic breadth — 40,5 34(?) 



Interorbital » 22 23,6 22 



Mastoid » 25 26 26 



Diastema 22 23,5 21 



Upper molar series 11 11 12 



As may be seen from this, it is chiefly the length of 

 the skulls from Rio Curaray and the teeth that are smaller 

 than Allen's typical M. milleri. This is, however, perhaps 

 still more important when other dimensions are equal like 

 the interorbital and mastoid breadth, because it proves dif- 

 ferent proportions of the skull. The greater length of the 

 diastema may stånd in correspondence with the shorter molar 

 series. The difference in zygomatic breadth is so peculiar 

 that a misprint or lapsus calami in Allen's description 

 might be suspected. The differences as well in colour as in 

 cranial dimensions together with the different habitat appear 

 to prohibit a direct Identification. The present specimens 

 have no likeness with the larger and almost entirely rufous 

 3Iyoprocta acouchy from Guyana. Pocock has also described 

 the exteriör of a Myoprocta from Peru which he has named 



