14.'4< [November, 1875. 



lowish, legs simple, antenna) short, disooidal vein only slightly bent, 

 middle tarsi not silvery at the tip, wings without any dark blotch, and 

 hind femora not (or scarcely) bearded. This leaves D. simplex, IMeig., 

 linearis, Meig., arjiJis, Mcig., modestus, AYahlb., and perhaps parvicnu- 

 datus, inconspicuus, and exirjuus, of Zetterstedt. From all these it is 

 easily distinguished by its yellow fringed alula) (one specimen has two 

 or three black hairs on each alula), and by the peculiai'ly furcate 

 lamellae of the hypopygium, w^hich bear a long narrow fork on their 

 under-side {i. e., the side away from the belly, when the hypopygium 

 is in its usual incurved state) ; this fork begins a little before the 

 middle of the lamella, and runs parallel to it, extending to about 

 the same distance, it bears two long black hairs at or near its tip, 

 and one or two at about half its length ; the other part of the lamella 

 is somewhat triangular, running to a sharp, jagged, blackish point. 

 The thorax is aeneous, with two bluish longitudinal lines and a bluish 

 scutellum ; the antennae are short for a DoJicJiopus, luteous, with the 

 greater part of the third joint blackish, and with the upper side a 

 little darkened ; the face is narrow, and silvery- white ; the f rona is 

 shining blue (as in some species of JCiphandrium) ; the legs are 

 darkened by the abundant small bristles, the front coxae are luteous, 

 glossed with silver in front, denuded outside, but bristly inside and in 

 front, their base is all greyish, the hind coxae are blackish-grey, all the 

 trochanters being luteous ; the femora, especially the hind pair, bear 

 a dark streak nearly all along their inner side, and about the darkened 

 part of the hind pair the bristles sometimes almost approach a beard 

 in appearance, the hind femora are faintly darkened at the tip, bearing 

 only one spine behind ; the tibiae all bear long bristles down their 

 outside, the hind pair are altogether darkened, but not more so at the 

 tip ; the basal joint of the hind tarsi bears two long bristles above, 

 and the front tarsi seem slightly compressed, having the extreme tips 

 of the joints whitish beneath and faintly dilated, giving the idea of a 

 (^ Taehytrechus ; the wings are almost hyaline, the discoidal vein being 

 only very slightly bent (I know no DoJicJiopus having it so slightly 

 bent), the stigma is slight and inconspicuous. 



The female I did not succeed in capturing, or I liave failed to 

 distinguish it from that of D. sahimis : it should differ by its larger 

 size, paler wings, &c. I caught five males at Fawley in Hampshire on 

 June 21st this year. 



Gtmnoptebnus gracilis, Stan. — This beautiful golden-green 

 species abounded at TJpware last July, • 



