;132 Orthorrhapha brachycera. 



thoracic disc have similar hairs, which are fused with the dorsocentral 

 hairs. Further a humeral bristle, a posthumeral, about four noto- 

 pleural, a supraalar and a postalar bristle, all black; besides there 

 are stronger and weaker hairs on the humeri and in the anterior 

 part of the præsutural depression. Scutellum with four black marginal 

 bristles. Pleura greyish, metapleural bristles black; propleura with 

 black hairs. The spiracles yellowish brown. Abdomen black, dull, 

 with narrow greyish hind margins to the segments; it is clothed with 

 black hairs and has strong bristles at the hind margins of the seg- 

 ments. The fourth dorsal segment has a curious shape, it is some- 

 what excised in the hind margin on each side at the lower angle, 

 and below the excision the angle is drawn out into a process, which 

 bears a tuft of strong bristles; in the excision a somewhat broad 

 membrane is seen. The venter is greyish, with black hairs. Exterior 

 genitalia not large, somewhat resembling those in tessellata ; the lower 

 lamellæ triangular, directed upwards, the upper apex drawn out into 

 a distinct point, which is curved slightly backwards; the upper lamellæ 

 small, triangular and pointed; the lower lamellæ have short hairs at 

 the hind margin. The somewhat sinuous apex of the black penis 

 protrudes forwards between the upper lamellæ (in my specimen), it 

 has a small dilatation near the middle ; the genitalia are more strongly 

 compressed than in tessellata^ and have a more pointed upper apex. 

 Legs rufous; coxæ blackish, greyish pruinose, trochanters black, the 

 femora more or less darkened in the middle, and the tarsi blackish 

 towards the apex. The legs haired somewhat as in tessellata-, the 

 anterior femora with stronger and weaker hairs on various sides; the 

 hind femora with bristles on the ventral side; front tibiæ with bristles 

 on the dorsal side and a dense, short, pale pubescence on the ventral 

 side; middle tibiæ with (four) rows of bristles on the various sides; 

 hind tibiæ with somewhat long bristles on the dorsal side and short 

 ciliated on the ventral side; the posterior tarsi spinulous below, the 



Fig. 43. Wing of E. hrericornift. 



hind metatarsi also with bristles above, and all tarsi with bristles at 

 the apex of the joints; the pubescence below the front tibiæ is con- 

 tinued out on the tarsi. All hairs and bristles black. Wings strongly 



