NEOTROPICAL MALLOPHAGA CARRIKER 



429 



setae at sides 9-10 in number, all pointing inward and of various 

 lengths, the anterior ones the shorter. Posterior margin of genital 

 plate an open V-shape, set with numerous short, fine setae (fig. 5,g). 



The species is represented by the female holotype and two female 

 paratypes. 



Forniicaphagiis pittasonuie, new species 



Figures o,b,i; 6,6 



Types: Male and female adults from Pittasoma rujipileatum. rosen- 

 bergi Hellmaj^r, collected by the author at Pavarondocito, Antioquia, 

 Colombia, May 19, 1950 (USNM). 



Diagnosis: A handsome insect of an almost uniformly translucent 

 brown color, sharply defined, dark brown carinac on head and thorax, 

 and black pleurites, but with abdomen paler than head. 



It is one of the larger species, the male being the largest known of 

 that sex (1.75 X 0.575); the head of the female is almost equal in 

 length to that of magnus and splendidus, but is wider (0.542 X 0.553 

 against 0.553 X 0.532). 



Posterior to the coni the head has a quadrangular appearance, with 

 the slightly concave sides of anterior portion converging sharply to 

 the narrow frons; anterior plate longer tlian w4de, very similiar to 

 that of splendidus; in fact, the whole insect resembles that species, 

 differing as follows: Anterior plate slightly longer; the inner carinae 

 which support it are much narrower, with smaller incrassations, and 

 there is an oval projection on inner side of these carinae at base of 



