LIST OF DIPTERA. 381 



the flat part comprises only a small part of the front, but is com- 

 posed of very large facets, and quite distinct from the other part : 

 lip black, shining, much longer than the head, clothed with black 

 hairs at the base, ferruginous and covered with short tawny hairs at 

 the tip: feelers black ; first and second joints clothed with black 

 hairs ; second joint full half the length of the first ; third joint 

 spindle-shaped or nearly linear, much longer than the first and the 

 second joints, but not near twice the length : chest covered with a 

 brown bloom, beset with some black bristles on each side : breast 

 partly clothed with hoary hairs : abdomen bluish purple, shining, 

 linear, convex, clothed with very short black hairs, thickly crossed 

 with very little furrows, rather narrower than the chest and rather 

 less than twice its length ; first segment extremely short ; second 

 and third segments of moderate length ; fourth, fifth and sixth seg- 

 ments longer ; seventh segment shorter ; eighth and ninth segments 

 very small : legs purplish black, clothed with hoary hairs ; shanks 

 and feet beset with black bristles; claws black; foot-cushions piceous ; 

 hind legs longer than the rest, their thighs not thick nor armed 

 with teeth, their shanks slightly curved : wings black, pale gray to- 

 wards the base ; wing-ribs and veins black ; poisers piceous. Length 

 of the body 5 lines ; of the wings 10 lines. 



a. Philippine Islands. From Mr. Wood's collection. 



Group X. 



Laphria iEatus, n. s. Nigra, pectore cinereo, abdomine piceo, dorso 

 ferrugineo, antennis pedibusque nigris, alls basi limpidis apice 

 sublimpidis. 



Body black, shining, rather slender, thinly clothed with hairs : 

 head a little narrower than the chest, covered with hoary or silvery 

 lustre, and clothed with black and white hairs ; front and clypeus 

 thickly beset with long black bristles ; two black bristles on the tu- 

 bercle of the eyelets : eyes black ; fore part flat, distinct from the 

 other part, and with much larger facets : lip black, its tip clothed 

 with short ferruginous hairs : feelers black ; first joint linear, clothed 

 with black hairs ; second joint beset with black bristles, not half the 

 length of the first ; third joint spindle-shaped, much longer than the 

 first and the second, but not twice their length : chest thinly clothed 

 with hoary and tawny hairs : breast gray and clothed with hoary 

 hairs : abdomen linear, piceous, convex, obconical at the tip, nearly 

 as broad as the chest but less than twice its length, hairless beneath, 

 ferruginous and clothed with ferruginous hairs on the back, except- 

 ing the base, which has a fringe of long white hairs on each side : 



