Pipunculidae. 



Head large, semiglobular, in Pipunculiis (and Nephrocerus) 

 specially large, as long or about as long as broad, piifTed out behind 

 the eye-margin and then deeply excavated, in the other genera it 

 is shorter, flat or only slightly concave behind, without any margin 



Fig. 1. Pipunculiis zonatus q. Fig. 2. Verrallia aucta (^ . 



Head in profile. 



behind the eyes (figs. 1 and 2); it is broader than thorax. Eyes gener- 

 ally touching in the male, sometimes quite narrowly separated, in 

 the female separated, but rather narrowly. Vertex with three ocelli; 

 it has in Nephrocerus and Pipunculus no bristles, but in the other 

 genera there is a pair of long, parallel ocellar bristles, directed forwards. 

 In the males with the eyes touching the vertex and frons are elongately 

 triangular, and when the eyes are only approximate, vertex and frons 

 are narrowly connected; in the females the frons forms a narrow 

 band from the ocelli to the antennæ; vertex, frons and epistoma 

 are not raised above the level of the eyes in Pipunculus^ but in Cha- 

 larus and Verrallia vertex and epistoma are a little raised and are 

 therefore seen in these two genera, when the head is viewed in profile, 

 but not in Pipunculus (Tigs. 1 and 2). As the family belongs to the 

 Aschiza there is no frontal bladder nor bladder-seam, neither is any 



1 



