Dohrniphora. 145 



or longer and forceps-shaped. According to Schmitz the maxillæ 

 are a little more developed than usual, a small palpiger being present, 

 looking as a basal joint of the palpi. There are narrow jowls present, 

 sometimes descending a little below the eyes; one long lower post- 

 ocular bristle and at the oral margin one long oral bristle so that 

 two diverging bristles are seen (the bristles which Schmitz terms 

 "2 divergierende Backenborsten auf der Grenze von Wangen und 

 Backen"); one rather conspicuous genal bristle (Schmitz says one 

 or more, in the Danish species I found always only one). Thorax 

 with one pair of dorsocentral bristles. Scutellnm with four strong, 

 equal or practically equal bristles. Mesopleura bare. (In exotic species 

 the scutellar bristles may be unequal and mesopleura hairy). Ab- 

 domen in the male rather flat above, in dried condition always even 

 concave; second and sixth segments elongated. Hypopygium not 

 large, at all events when seen from above, and the tergite quite short 

 above; the two side-parts plate-shaped, but unsymmetrical, that 

 on the right side a simple plate, the left likewise plate-shaped, but 

 it is deeply fissured quite to the base, the fissure lies near the dorsal 

 side; the anal tube is long, cylindrical, fmger-like; below there is a 

 broad ventral plate; the hypopygium has in some species long hairs 

 below, there is especially one or a couple of specially long hairs at 

 the lower corner behind the fissure on the left side; in other species 

 the hypopygium is bare or nearly so. In the female abdomen is char- 

 acteristic by the want of tergites on the fifth and sixth segments, 

 or only on the sixth [crassicornis and Diidai^ the latter non-Danish), 

 and the fourth tergite is generally more or less narrowed; the eighth 

 is long and narrow, with long hairs, especially at the end; at the end 

 of abdomen there are two quite small and short, hairy lamellæ. 

 Abdomen is very sparingly and short, almost invisibly haired, or 

 apparently quite nude, except on sixth segment. Legs with the front 

 tibiæ with a dorsal or anterodorsal bristle above the middle, sometimes 

 (in non-Danish species) with more bristles, middle tibiæ with a pair 

 at about the upper third, and one, often weak, anterior near apex, 

 hind tibiæ in a single case without bristles, and when bristles are 

 present they are often small; there may then be a various number 

 (1 — 5) of anterodorsal and likewise of anteroventral bristles, or 

 there is only one kind, anterodorsal or anteroventral bristles present; 

 only in one species {Diidai, non-Danish) there is moreover a single 

 posterodorsal bristle. (Of the Danish species anterodorsal bristles are 

 present in all species except concinna] anteroventral bristles are 



10 



