Genus Rachionotomyia. 519 



covered with irregularly placed rather flat spindle-shaped scales 

 of a brown or bronzy hue, in front and on the prothoracic lobes 

 small rounded flat grey scales, over the roots of the wings some 

 larger flat scales, pale brown, grey or dull creamy coloured, those 

 at the sides also larger and flatter ; a few short brown curved 

 bristles in front of the base of the wing, and a row of 

 long ones over the base curved backwards ; scutellum deep 

 brown, sending out a large, thick, tapering, blunt process 

 backwards, covered with flat scales of dull grey hues, the scales 

 on the process smaller than on the base, the process has also 

 small thin forked scales below, and is pale apically ; metanotum 

 chestnut brown ; pleurae bright brown with flat white scales. 

 Abdomen covered with large flat brown scales above showing 

 dull violet reflections ; ventrally dull ochreous, apparently no 

 border-bristles, and the large scales rather loosely applied to the 

 surface ; apex with a few bristles and some small fine black 

 scales. 



Legs rather long and thin, deep brown with dull violet and 

 bronzy reflections in some lights, coxae bright brown with some 

 white scales ; femora with dull white scales beneath. 



Wings with the fork-cells small, the front sub-marginal longer 

 and narrower than the second posterior, its base about level with 

 the base of the second posterior cell, its stem very nearly as long 

 as the cell, stem of the second posterior also nearly as long as the 

 cell ; posterior cross- vein a little more than its own length distant 

 from the mid, the mid and supernumerary meeting at an angle ; 

 scales on the branches of the second long vein and on the apex 

 of the first rather broad, flat and dense, on the remainder of the 

 first rather spinose, on the other veins the lateral scales are linear 

 but thicker than in Culex, median vein-scales single ; upper costal 

 border spinose. 



Halteres with small yellow scales on the stem, dusky on the 

 knob. 



Length. — 4 mm. 



Habitat — Peradeniya, Ceylon (E. E. Green). 



Time of capture. — October, 1901. 



Observations. — described from a single perfect specimen, except 

 for the ungues. It is a very obscure-looking insect except for the 

 strange scutellar process. 



