370 coifOPiD^. 



little curved downwards, in the manner typical oE ConopiDjE ; six- 

 segmented ; 6th segment very long and narrow in 5 ; genitalia 

 in (S conspicuous and complicated *, in $ very elongate, sub- 

 cylindrical, somewhat like those of Tipttlid^ in general appearance. 

 Legs long, slender, simple, practically bare ; tarsi as long as or 

 longer than tibiae ; hind legs much longer than the others ; hind 

 femora slightly but obviously dilated from beyond the base. 

 Winr/s cuneiform at base ; auxiliary vein extremely short, sub- 

 costal cross-vein present, though sometimes rudimentary ; 1st 

 posterior cell closed well before the wing-border, elongate; anterior 



Fig. 78. — Stylogaster orientalis, sp. nov. 



cross-vein considerably beyond middle of discal cell ; the latter is 

 very long and very narrow at the base; 2ikI basal cell short, less 

 than half as long as 1st ; anal cell very short, shorter than 

 2nd basal ; 6th vein distinct to wing-border (in some New V\"orld 

 species it is shortened) ; 7th vein rudimentary or absent ; squamae 

 obsolete. 



* In tlie African species, S. complexa, Big., the c? genitalia are complex 

 and conspicuous, protected by a large sheath (like that found in Connps) on 

 the 5th segment. There is a large bowl-sliaped ventral plate, narrowed at the 

 base ; a pair of long, slender, horny, fingei--like processes slightly curved ; a 

 smaller pair of clavate processes behind them ; and a longer, pointed, median 

 organ witii a few bristly hairs at the tip ; all these parts are pale yellow and 

 practically bare, except the ventral plate, wliich bears short, soft, pale yellow 

 hairs on the imder side. In a North American species of uncertain identity 

 the genital parts are different, though apparently of the same general plan, 

 but the condition of the specimen precludes any description. 



