386 Orlhorrhapha brachycera. 



a flat or a litlle concave, declining area; pro- and metathorax small, 

 the former with small bristles above; propleura with a prothoracic bristle. 

 Acrostichal bristles absent; in molliculus there are however a few quite in 

 front, and farther backwards a single may be found ; there are five distinct 

 dorsocentral bristles, and often a quite small one in front; further a 

 humeral bristle, a posthurneral, tvvo notopleural, a præsutural, two or 

 three supraalar (in concinnus I could find only tvvo), and a postalar 

 bristle. Small hairs on the front part of the disc very few, almost 

 wanting. Scutellum has two marginal bristles and a small hair on 

 each side. Abdomen somewhat short, a little compressed; in the 

 male there are five visible dorsal segments of about the same length, 

 only the first a little shorter; also the sixth segment is seen, but 

 short; on the ventral side there seem to be four normal segments, 

 the first as usual quite small. The seventh segment is small and 

 hidden. Hypopygium small, it lies somewhat imbedded at the end of 

 abdomen, directed downwards and more or less forwards; its dorsal 

 side and the eighth segment are just seen ; as far as I could detect 

 without dissection there are a pair of small outer lamellæ, probably 

 somewhat united, lying in a dorsal incision. The eighth segment has 

 longish hairs. In the female the abdomen is pointed, it has five seg- 

 ments of nearly the same length, but the sixth and seventh or more 

 are generally also seen; at the apex there is an ovipositor with two 

 lamellæ. There are distinct dot-like impressions at the side of the 

 second, third and fourth segments. The abdomen is clothed with 

 somewhat strong hairs, and has distinct hindmarginal bristles, longest 

 on the first segment. Legs rather slender, simple, the hind tarsi 

 about of the length of tibiæ, metatarsus a little longer than the 

 second joint, without bristles. Posterior coxæ each with a bristle; the 

 posterior femora have preapical bristles ; middle tibiæ with two antero- 

 dorsal and two postero-dorsal bristles; the posterior tibiæ have apical 

 or preapical bristles. There are two very small claws, likewise short 

 and small pulvilli, and a short, narrow empodium with bristles below. 

 Wings of usual shape; the mediastinal vein terminating in the sub- 

 costal vein, discai vein curved a little upwards and parallel with the 

 cubital vein; the posterior cross-vein placed more or less anterior to 

 the middle; anal vein not specially short. Axillary lobe somewhat 

 developed. The discai vein has a convexity just behind the posterior 

 cross-vein. Squamulæ with a small angulary lobe, with a long fringe; 

 the inner part of squamulæ shorter-haired. 



The developmental stages are not known. 



The species of Chrysotimus are somewhat characteristic by their 

 brilliant bright green colour, and the yellow abdomen of the female. 



