336 EMPIDJE. 



margin ; sides similarly coloured or dark grey : scutellum with 

 a fringe of long dark hairs. Abdomen black, scarcely pubescent ; 

 venter a little pale. Legs bright light brownish yellow, a lntle 

 pubescent ; coxae and basal half of femora black ; tarsi-tips 

 blackish. Underside of hind femora and outer side of posterior 

 tibiae with a few long stiff hairs. Wings brownish, stigma darker 

 brown ; halteres large, black. 



Length, 3 mm. 



Described from two S 6 taken by Mr. E. E. Green at Pera- 

 deniya, Ceylon, vi. 1910 {type in Indian Museum), and v. 1911 (in 

 Mr. Green's collection). 



Genus HYBOS, Mg. 



Hybos, Meigen, Illig. Mag. ii, p. 269 (1803). 



Genotype, Musca grossipes, L. (Europe). 



Head small, subspherical ; eyes occupying practically all the 

 front side of the head, contiguous in both sexes from vertex to 

 antennae, upper facets (S $ ) larger than lower ones, demarcated 

 by an impressed line ; three ocelli on the extremely small, promi- 

 nent vertex ; epistome small, cheeks absent, the eyes extending 

 downwards to oral opening. Proboscis not longer than height of 



Fig. 26. — Hybos apicis, Brim. 



head, directed horizontally forwards ; palpi comparatively long, 

 1-jointed. Antennae adjacent at base, inserted (seen in profile) 

 at middle of head, 3-jointed : 1st and 2nd joints short, 1st 

 more or less cylindrical, 2nd subglobular, with bristles ; 3rd oval, 

 longer than 2nd, with long arista, which may be pubescent on 

 basal portion. Thorax rectangular, strongly arched or humped ; 

 dorsum with more or less distinct short stiff hairs arranged 

 approximately in dorso-central and acrostichal rows ; two noto- 

 pleural (plus sometimes a third weaker one) and some postalar 

 bristles ; metapleura bare. Scutellum with two stronger and 



