164 MONOGRAPHIA 



spot at the apex; tibiae with the external margin pitchy. 

 Length I. 



The only specimens of this species I have seen are two 

 males, which I took from off a Pintado (Numida mele- 

 agris). 



Nitzsch enumerates another species Goniodes paradoxus, 

 parasitical upon the Quail (Perdix coturnix), which has 

 never fallen to my lot to examine. 



SUB-GENUS V. LIPEURUS. (Nitzsch.) 



Lipeurus. Nitzsch. Burmeister. Stephens. Children. Ornithobius. Leach. 

 SUB-GENERIC CHARACTER. 



Head moderately large, variable in form, generally narrow 

 and obtusely triangular, occasionally obtusely lyrate ; tra- 

 beculce none ;* antenna obtusely setaceous, the first joint in 

 the male the longest and sometimes very much enlarged, 

 the third more or less reflected, hooked, and small, forming 

 a kind of claw with the first, fourth and fifth, minute, stand- 

 ing at an acute angle with the third, the female with the 

 first three joints the largest and simple, occasionally only 

 the first two enlarged ; abdomen more or less narrow and 

 elongate, with the apex of the last joint in the male emar- 

 ginate or deeply cleft, in the female generally truncate ; 

 legs usually very long. 

 Infests Birds of the orders Rasores, Grallatores, Nata- 



tores, and many of the larger Diurnal Raptores. 



* * * Head rotundate. 



1. LIPEURUS VARIABILIS. (Louse of the Domestic Fowl.) 



Plate XV. Fig. 6. 



Dirty- white, smooth, and shining, margined with black ; 

 * In some species the margin of the clypeus is reflected over the base of 

 the antennce, and looks like the trabeculse, as in the L. variabilis. 



