1890.] NATURAL SCIENCES OF PHILADELPHIA. 27 



As already noted the lines on the face are essentially the same as 

 the naked spaces in P. melanopogon. The white color approaches 

 the borders of the eye-lids — a narrow line of integument alone 

 intervening. No collar of black hair at this place discerned. 



The wing membranes are marked by numerous irregular lines as 

 in Harpy la. 

 Cephalotes peronii. 



Five examples of this species were examined. 



In two of the number, (a & b) the forearm measured 111 mm. in 

 length ; in one (c) the forearm measured 75 mm. ; in one (d) (cer- 

 tainly immature) the forearm measured 80 mm. ; and in another 

 (e, also immature) it measured 65 mm. 



(a) The crown and occiput black. 



Face sparsely covered with short black hair which for the most 

 part is directed backward and reaches almost to the ear, so that the 

 " whisker" tract is obscurely defined if it be present at all. 



The side of neck provided with sparsely distributed hair. The 

 part near the shoulder with an obscure rosette-like arrangement of 

 unicolored olive-brown hair. The front of the neck is covered with 

 short hair of the same color which appears to be on each side an 

 extension of the rosette upward and to the front of the neck. 



The back of neck is of the same color with that of the occiput and 

 crown but of a lighter shade. 



The hair is distinctly longer than on the side and is easily distin- 

 guished therefrom by its darker hue. 



A row of long, very distinct bristles is present on both the upper 

 and lower lips. The bristles of the muzzle and above the eye are 

 also exceptionally conspicuous. 



The side of the trunk is distinctly separately marked from the 

 front. The hair is of a unicolored mouse gray color, long and silky. 

 It is continuous without interruption to the infra-anal and femoral 

 regions. 



The hair of the front of the trunk is shorter. The color is brown 

 to tawny. 



The endopatagium and mesopatagium is nearly one-half covered 

 with soft hairs. The back is naked excepting over the sacrum 

 where a few black hairs are found. Hair extends along the dorsal 

 aspect of forearm. 



