A Moiiogniph of Egypliau D'iptcra. ()3 

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DESCRIPTION :^M(ile "Face orange, bearing grey diist and 

 "a siighl pale pubescence; jowls usually tinged with black, but 

 "oftenon only the separating of f space near the lower front corner 

 "of the eye ; there are no long black hairs overhanging the eyes 

 "on their npper part; the vertex is diisted asneous, narrow and pale 

 "haired on at any rate its front part. Frons often more or less 

 "greyish black and dusted on its npper î^art, but shining orange 

 "jiist above the antennfe ; its pnhescence is l)lack and fairly long. 

 "Antennœ orange, often with the ujjper i)art or even more of the 

 "third point brownish or even brownisli-black ; arista varying froiii 

 "yellowish brown to olack. 



"Thorax shining œneous with threc faint pale greyish lines 

 "on the fore part, the middle line narrow and the other two broad ; 

 "the pubescence is erect, tolerably abundant but not conspiruous, 

 "ail yellowish. Scutellum with longer, almost ail black, i)uli;>stcncp. 

 "Abdomen almost linear, but slightly broadest about the end of the 

 "second segment; the second segment bas the yellow basai corners 

 "connecteci along the sidcs with the broad pair of yellow spots on 

 "the dise ; the third and fourth segments bave the entii'e fore 

 "margin yellow as well as a broad middlc liand, thus leaving the 

 "entire hind margin black as well as a narrow line near the base 

 "which docs not reacli the side-margins, the broad yellow band is 

 "at its middle slightly produced in front and slightly emarginate 

 "behind ; the fifth segment is ail orange except a basai middle 

 "black spot. Pubescence mainly the same as the ground colour but 

 "there are a few black bristks down the middle and on the orange 

 "part of the fourth segment. Genitalia orange and black. 



"Legs long and thin, ail orange except the blackish coxae and 

 "trochanters and the rather obscurely orange hind tarsi ; pubes- 

 "cence moderate, the long hairs on tbf fmi-.fi ^■ellow oxropt usually 

 "a few blackish hairs behind the iiiiddl ■ iVin \:\ nltcr lli(> middle, 

 "and in front of the hind femoi'a iirii- il: ■ ii|i ; tli.' 'iiiy bristles 

 "about the tip of the middle femora, and in front of and ail about 

 "the tip of tlie hind femora are black, as are also usually ail those 

 "down the top and front of the hind tibiae, which almost forms ;i 

 "ciliation down the front of the tibias ; the basai joints of the hind 

 "tarsi long and thin. 



"Wings slightly brownish, wàth the subcostal cell and stigma 

 "distinctly darkenecl ; Radius 4 + 5 very nearly straight. Squamulae 

 "yellow. Haltères orange. 



Female. — "Similar but the orange markings are usually less 

 "extensive and those on the front margin of the third ;ind fourth 

 "segments are somewhat contracted about the middle, and the black 

 "line which t'ollows extends over the side-margins, while the black 



