358 GNATS OR MOSQUITOES — CHAPTER XIII 



towards the base ; antennae brown, broadly banded with grey, the grey 

 bands involving the base and apex of contiguous joints ; basal joint 

 testaceous, second joint pale testaceous, with a few black scales ; 

 clypeus deep testaceous. Halteres ochreous, with the knob a little 

 darker. Length. — 4 to 4'3 mm. 



Habitat. — Fort Johnston, British Centi-al Africa; Chiromo, Lower 

 Shire, British Central Africa; Lagos, also British Central Africa; Old 

 Calabar. 



8a. PANOPLITES AFRICANUS, var. Beversus (Theobald). 



Mr. Theobald separates the above form from the usual tj'pe of the 

 species with which it is found associated. The yellowish scales on the 

 wing largely preponderate, and the apical borders of all the abdominal 

 segments are yellow. The thigh and tibiie are brindled but not distinctly 

 banded, and on the hind legs the first tarsal joints have only a single 

 median band. The dark tip of the proboscis is also shorter. Length. — 

 4'5 mm. 



Habitat.— Zomh&, British Central Africa. 



GENUS X. T^NIORHYNCHUS, Arribalzaga (as 

 modified by Theobald). 



This genu8 is closely allied to Fanoplites, the leptotaxis of 

 the wing veins in certain species of that genus closely approach- 

 ing that of the present, while in many Tccniorhynchi certain of 

 the scales are decidedly unsymmetrical, though they never quite 

 assume the typical bracket-like form. They may usually be 

 easily distinguished by the wings never being brindled in the 

 same way as is the case in all Panojplites, for though, in some 

 species, there may be a few pale scales intermixed with the dark 

 ones, they are never sufficiently numerous or sufficiently con- 

 trasted to give rise to doubt. The female palpi closely resemble 

 those of Fanoplites in their general appearance, but are always 

 shorter, seldom exceeding one fourth the length of the proboscis, 

 which is usually, but not necessarily banded. As at present 

 constituted the genus contains but one of the members of 

 Arribalzaga's old group. In distribution they closely resemble 

 Fanoplites, with which, indeed, they are often found associated. 

 The most typical species are all of a peculiar honey-yellow tint, 

 but two or three are more sombre insects. Mr. Theobald's 

 definition of the genus is as follows, the essential generic charac- 

 ter being that the veins of the wings are densely clothed with 

 long obovate scales. 



