182 DOLICHOPID.*;. 



/. Upper part of the face burnished. Species 5. 

 ff. Upper part of the face tarnished. Species 6. 

 e e e. Wings not spotted. 



g. With cheeks under the eyes. 



h. Pubescence of the abdomen above blackish. Sp. 7. 

 li h. Pubescence of the abdomen pale. Species 8. 

 (J (J. Without cheeks. Species 9. 

 d d. Arista decurved. Species 10. 



The first two species depart in several points from the typical 

 character. The third joint of the antenna is obtusely triangular, 

 not toothed, the arista long and slender; the abdomen longer 

 than the thorax, and convex, the first segment shorter than the 

 second, the hind margin of it (in particular) ciliated at each side, 

 the sixth segment more or less exserted above in the male ; the 

 fore femora not much thicker than the others, and unarmed 

 below, as well as the inner edge of the tibia ; the posterior coxse 

 with a bristle on the outside. 



1. virens, Spl. earn. 921 (1763); LI. ; ^?,i.—regins, Fb. ; Fin.; 

 Mg. ! Mq. ; Ct. ; Ztt. — Fcem. festivus, Dnvn. ! PalUde viridis, ahdo- 

 mine nigro-fasciato, alls macula 'mterstitiali fusca ; Mas. alls ante ajncem 

 album infuscatls, hypopygii corniculis geniinis inflexis, tarsi antici arti- 

 culo secundo bre\dssimo incrassato. Long. 3 ; alar. 7 lin. 



Blimli-green with a hoary tinge. Face glossed with white below in 

 male, bluish in female. Thorax with two blackish stripes down the 

 middle, and an irregular one at each side above the wings. Scutellum 

 with six bristles. Wings hyaline, with a broion spot between the cubital 

 and prsebrachial veins a little above the line of the transverse vein, 

 which is oblique and sinuated, and lies very close to the hind margin ; 

 subapical vein obliquely converging towards the cubital, with a very 

 faint bend before the middle ; the cubital a little sinuated. In the 

 male the wlitgs outwardly are clouded broion, with a defined white spot 

 at the tip between the cubital and subapical veins. Abdomen tclth the 

 hinder edge of the segments (except the last) blackish, forming four 

 bands ; the sixth segment exserted more than tlie fifth in the male, 

 glossed with white, but not pubescent ; the hypojiyglum large, tvlth the 

 lamella not detached, bearing at the tip a pair of dusky, linear, curved 

 and hairy appendages. Legs dark green, femora with white pubescence 

 beneath, tarsi l)lack. In the male the second joint of the fore tarsus Is 

 very short, a little thickened, with some minute glandular hairs at the 

 inner edge, and tomentose below, as are also the two following joints. 



About the shaded face of cliffs wetted by the spray of water- 

 falls. (E. S. L) 



2. lacustris, Spl. cam. 924 (1763). — vlrcns, Vz.—forinosus, Hal. 

 — vlrldlpes, M(|. VlruJl-fPneus, genubus fulvls ; Mas. vena subaplcall 



fere rectangulatlm fexa. Long. 2-| ; alar. 6 lin. 



