34 H. C. EFFLATÔUN. 



Maie and Female. Length of body : 6 — 6 8 mm. ; ovipositor : 

 0.6 mm. ; wing : 5.5 mm. — 



DESCRIPTION: — Frons reddisli-brown except for three spots 

 from which arise the f ronto-orbital bristles and the extrême base of 

 the anteniiae brownish-black; face pale yellow with the usual two 

 small blackish spots situated in the upper half and on the inner 

 sides of the antennal furrows; proboscis and palpi yellow; cheeks 

 narrow, pale yellow; vertex shining reddish-brown with the vertical 

 triangle blackish; occiput shining black; antenuae reddish-brown 

 but the basai segment and the aj^ical half of the third segment 

 usually darker. 



Thorax dark rusty-brown, dull, almost black except the humeri 

 and two elongated triangular spots immediately before the suture 

 yellow; thèse two spots continue below on the mesopleurae and end 

 by a small spot on the sternopleurae ; the metapleurae are also yel- 

 low; the whole of the dise and pleurae are covered with a very déli- 

 cate, short and white pubescence; ail the bristles are black; scutellum 

 yellow with two black a. se. 



Abdomen dark rusty brown in the female but mucli darker in 

 the maie; the apical half of the second segment, however, is much 

 paler and is at most dark yellow; maie hypopygium reddish-brown; 

 ovipositor very small, cylindrical and reddish-brown; the pubescence 

 of the abdomen is uniformly short and white and shows a curions 

 médian line as if it had been parted in the centre. 



Legs yellow except the bases of the middle and hind tibiae and 

 the apices of the femora dark brown; sometimes the hind tibiae an- 

 entirely dark brown; middle tibiae with a single spur. 



Wings hyaline with the veins yellowish-browu and a thin 

 brownish line running along the base of E2-f3 and E4 + 5; conse- 

 quently the stigma and the whole of the se. cell are brown, as well as 

 the outer margin of RI cell. 



D. annulatns, in my opinion, is not a Palaearctic species. I 

 hâve before me one 9 (one of Dr. Beckers types) belonging to the 

 Berlin Muséum which was supposed to hâve been captured in Egypt 

 by Ehremberg in 1856. I also possess 6 spécimens (5 cT and 1 9) from 

 Erythrea, given to mf; by my friend Prof. Dr. A. Mochi and I am 

 told tliat this species is very common in Massawa. 



DACUS SEMISPHAEREUS. Becker 

 (PI. III fig. 1) 

 Beck., Mitteil. Zool. Mus. Berlin, I F. 13!). 225. (1903). 



DIAGNOSIS: — A .small, somewhat globular, entirely i-eddish- 

 yellow species with a very short cylindrical ovipositor. 



