﻿Bomhyliidae (Dijdera) from Central Africa. G4o 



black, with black hairs aiul bristles. Pattern of the wings as in 

 dimidiata ; shape of discal cell intermediate between dimidiata 

 and discriminata ; first posterior cell less narrowed at the end. 



Type Ç and another Ç specimen from West Nyasa, 

 Vitiya and Mzimba, June and October 1909 {Dr. H. S. 

 Slav mes). 



58. Uxopo'osojya aryyrophora, sp. nov. (Plate L, fig. 17.) 

 (J . Length of the body 9 mm., of the wing 8 mm. 



A very small species near E. dimidiata, but distinguished by its 

 silvery abdomen. Head black, with scanty pubescence and black 

 hairs on the frons. Face short, conical; proboscis not projecting; 

 antennae with the two basal joints black, the first with black hairs 

 and short, third joint wanting. Thorax black and black-haired, 

 with some grey hairs on the collar. Scutellum black, dark reddish 

 at the hind edge. Haltères with a white knob. Abdomen black, the 

 venter and the sides of the second to the fourth segments are yellowish ; 

 first segment with white hairs on the sides ; second, third and fourth 

 segments all covered with dense silvery scales and with white hairs 

 on the sides ; the remaining segments are black, with .«parse white 

 scales and black hairs. Legs black, the tibiae dark reddish ; hind 

 claws short and with a small tooth. Wings as in E. dimidiata, but 

 the black pattern more narrowed, filling only the basal third of the 

 discal cell ; direction of the veins as in sigmoidea, but the discal cell 

 is more regular and its exterior cross- vein is not S-shaped. 



Type ^, from West Nyasa, Momberas district, 

 November 1909 (Dr. H. S. Staimus) ; a single specimen. 



59. Exoiyroso2margcntifrons,^iQ,c(\n\xxt(ld>ôô). (Plate L, 

 fig. 18.) 



A single specimen from West Nyasa, May 19, 1909 

 {Dr. H. S. Stannas), which agrees well enough with the 

 description. The first joint of the antennae and the legs 

 are red ; the marking on the wing is more brown than 

 black. 



This and the following species belong to the group D of 

 Loew ; but I think that they are best placed with 

 E. dimidiata. 



60. Exoprosopa scaligera, sp. nov. (Plate L, fig. 19.) 

 c^. Length of the body 10 mm., of the wing 10 mm. 



Allied to the preceding species, but distinguished by the shorter 

 antennae and the different shape of the wing-marking. 



Head black, dark reddish on the face, which bears whitish scales ; 



