LAMB— DIPTERA : LONCH^ID^, SAPROMYZID^, EPHYDRID^E, ETC. 



315 



Localities. Seychelles. Silhouette : Mare aux Cochons, over 1000 ft., VIII. — IX. 

 1908 ; near Mt. Pot-a-eau, about 1500 ft., VIII. 1908. Mahe : Cascade Estate, ca. 1000 ft., 

 1908 — 9 ; Anonyme Island, from grass, etc., I. 1909. 



14. Homoneura atra, n. sp. 



This species is in facies exceedingly like the last. The thorax and abdomen are also 

 completely black, but the slight pollination is practically absent, and the pleurae are not 

 slightly silvery. The differences between the two species are given below. 



Head. Frons, face and jowls entirely black except for a small brown space just 

 above the antennae and the brownish lower eye-margins. Antenna with the third joint 

 brown, the others black. Palpi black. 



All the legs are slightly darker orange ; front femora darkened, middle and hind 

 femora quite black. 



Size as last. 



Locality. Seychelles, Silhouette: Mare aux Cochons, over 1000 ft., IX. 1908. 



15. Homonetira pulchrifrons, n. sp. 



Head. The central area of the frons is of a very striking deep velvety black ; the 

 side stripes on which the fronto-orbital bristles stand are broad and shining black, they 

 extend right up to the eyes and are joined across the vertex by a narrow shining strip 

 fi-om which the front point of the small shining ocellar triangle projects. The back of the 

 head is also shining black except for a central silvery spot. Face with the top half 

 shining black, the lower half yellow, the broad eye-margins are paler yellow. Below the 

 antennae on each side of the eye-margin is a silvery spot. Jowls yellow. 



Palpi black, tongue yellow. 



Antennae entirely velvety black, arista plumose with the longest rays on top at base 

 tapering to the tip, shorter and more uniform in length below. 



Thorax. Dorsum somewhat shining brownish black, slightly dusted, with the 

 humeral calli and a line from them over the wing bases brownish yellow : sterno-pleurae 

 brown. Scutellum as the thorax but slightly paler round the margin and pale below, the 

 metanotum is yellow. 



Wings slightly yellow, tinged with brown-yeUow veins. 



Halters yellowish with browner knobs. 



Legs all yellow : front femora with the usual two rows of bristles, the upper extending 

 nearly to the base with five or six bristles, lower with two distinct bristles on the distal 

 third : middle femora with a distal row of four or five bristles on the front side, tibiae with 

 a crown of two spines as well as the preapical bristle ; hind femora with small preapical 

 bristle. 



Abdomen. Moderately shining black, with marginal bristles and small general 

 bristles. 



Male hypopygium with a central lobe and two side hooks, the central lobe itself 

 ending in two hooks. 



