A Monograph of Egyptian Diptera. 37 



Strobl., Mittheil, Naturwiss. Vet. Steiermark, XXIX. 1892. 163. 

 (Melithreptus) (1893); Verr., Brit. FL, VIII. 445. (1901); Villen., 

 Feuil. Jeun. Natural., XXXIII, 147. (1903) ; Beck., Bez., Kert., 

 u. Stein, Ratal. Palsearkt. Dipt,, III. 73. (1907); Kert., Catal. 

 Dipteror., VII. 135. (1910). 



= melissce Zett., Dipt. Scand., II. 770. 5. (female) (1843). 



= tceniata Walk., (nee Meig.), Ins. Britann., Dipt., I. 299.3. 



(Melithreptus) (1851). 



DIAGNOSIS: — Thorax with its side margins } r ellow only 

 above the suture ; abdomen small and moderately long. 



DESCRIPTIOX.— Male, (PI. Ill, tig. 7), Face yellow 

 to yellowish-brown, with the sides usually pearly-white and 

 entirely shining ; down the middle, the central knob is 

 often blackish, sometimes with a dark middle line extend- 

 ing downwards to the mouth-edge, while the exact margin of the 

 mouth is usually narrowly black on the front part; pubescence on 

 face very short and inconspicuous; the lower margin of the mouth 

 runs back horizontally to the lower margin of the eyes and is not 

 in the least descending; the jowls are very small with white 

 pubescence which extends up the occiput; this pubescence becomes 

 rather conspicuous and coarse where the margin of the eye is 

 arched inwards, and consequently leaves a much wider space on 

 the occiput visible; above this the occiput becomes much darker 

 and its pubescence is longer and ranging from yellow to dark- 

 tawny ; vertex rather large, bright aeneous-black and bearing a 

 dark pubescence; frons of the same colour as the face, not much 

 produced, with short yellow pubescence, but on the top occasion- 

 ally there are a few black hairs. Eyes reddish to reddish-brown 

 or black, touching for about eight facets. Antennae dull orange, 

 blackish on the dorsal side and at the apex; arista quite bare, not 

 quite as long as the antenna; it is gradually tapering and ob- 

 scurely orange at the base, but mostly blackish. 



Thorax either quite dull or very shining aeneous, with a pair 

 of broad greyish longitudinal lines on the disc near the base, these 

 stripes varying somewhat in distinctness; it is yellow or greenish- 

 yellow on the humeri and on the side margins down to the base 

 of the wings, after which the yellow is interrupted until the 

 postalar calli, which are more or less orange ; the prothorax and 

 nearly all the mesopleurae. pteropleuras and metapleurae are yel- 

 low, and there is a large yellow spot at the top of the sterno- 

 pleurae; the pubescence is rather long, abundant, pale yellow to 

 tawny, but very inconspicuous; the scutellum is dull orange except 



