994 LIST OF DIPTERA. 



in front ; a broad pitchy stripe between the eyelets and the epistoma, 

 which is not prominent ; sides of the face without bristles : eyes 

 red, convex; all the facets small: sucker pitchy, clothed with tawny 

 hairs ; palpi tawny, beset with black bristles : feelers dark tawny, 

 about half the length of the face ; third joint conical, downy, a lit- 

 tle longer than the second ; bristle black, about twice the length of 

 the third joint, feathered from the base to the tip with hairs of mo- 

 derate length : chest brassy green : abdomen nearly obconical, a 

 little longer than the chest : legs pitchy, rather stout, clothed with 

 short black hairs ; feet tawny, with pitchy tips ; claws black ; foot- 

 cushions pale tawny : wings dark brown, pale gray along the hind 

 border towards the base ; the brown colour passes into the gray by 

 means of several more or less distinct pale brown spots ; the brown 

 part is adorned with four colourless marks, the first of these is small, 

 triangular, and a little beyond one-third of the length of the fore 

 border, where the wing is almost black ; the second is slightly 

 curved, and extends quite across the wing or a little beyond the 

 lower cross-vein ; the third is triagular, and extends from the fore 

 border half-way across the wing ; the fourth occupies the lower part 

 of the tip ; wing-ribs and veins black ; lower cross-vein with two 

 very slight curves, the lower outward, the upper inward; the space 

 between the two cross-veins is full twice the length of the lower 

 cross-vein ; poisers pitchy. Length of the body 2 — 2-j lines; of the 

 wings 3^ — 4 lines. 



Ortalis Isara, n. s., mas. Nigro-cyanea, palpis antennis pedibus- 

 que piceis, tarsis fulvis, alls limpidis vitta costali interrupta 

 fasciisque duabus fuscis. 



Body black : head and chest beset with a few black bristles : 

 face broad, its sides without bristles ; epistoma hardly prominent ; 

 peristoma large, its sides dark ferruginous : eyes dark red ; fore 

 part nearly flat, its facets larger than those elsewhere : sucker and 

 palpi pitchy ; sucker clothed with tawny hairs : feelers pitchy, as 

 long as the face ; third joint slightly concave above, a little convex 

 beneath, pointed and somewhat curved upward at the tip, about 

 four times the length of the second joint ; bristle black, downy, 

 slender, rather less than twice the length of the third joint: chest 

 and abdomen dark blue : abdomen elliptical, shagreened, hardly 

 longer than the chest, clothed with pitchy hairs ; oviduct pitchy : 

 legs pitchy, clothed with a few short black hairs, beset with very 

 few black bristles ; feet dark tawny: wings colourless, adorned with 

 a dark brown stripe, which extends from the base along half the 

 length of the wing, and then descends towards the hind border; 



