SOME NEW MOSQUITOES FROM CEYLON. 241 



brown covered with rather large irregular narrow-curved scales, those 

 in the middle in front being white, those behind and at the sides pale 

 dull brown ; scutellum prominently trilobed, the median lobe with large 

 flat white scales, the lateral lobes with large flat, dull brown scales and 

 with brown border-bristles ; pleurae brown with patches of white scales. 



Fore legs brown, a narrow pale band at the base of the metatarsus 

 and first tarsal, the mid legs the same, only there is a distinct snowy- 

 white knee spot ; hind legs with the base and venter of femora white, 

 the base of the metatarsi and first tarsal segment white, the second tarsal 

 all black, the third all white but for a small black apex, last tarsal small 

 all black. 



Wings with typical brown Stegomyian scales ; first sub-marginal 

 cell longer and slightly narrower than the second posterior cell, 

 its base slightly nearer the base of the wing, its stem about half the 

 length of the cell ; stem of the second posterior nearly as long as the 

 cell ; posterior cross-vein about twica its own length distant from the 

 mid. Halteres with fuscous knob. 



Length 3 mm. 



Habitat : Peradeniya, Ceylon. 



Time of capture : November (1901). 



Observations. — Described from a single female in excellent condition. 

 The curious leg banding will at once separate it from all known 

 Stegomyias. 



Genus TRICHORHYNCHUS, nov. gen. 



Head clothed with small flat scales in front forming a broadish area, 

 similar ones at the sides, narrow-curved ones over most of the median 

 area and many narrow upright forked ones ; antennae with long seg- 

 ments, verticillate hairs scanty, the internodes densely hairy ; palpi of $ 

 rather prominent, apical segment long, slightly swollen. Thorax with 

 narrow-curved SGales,also the scutellum. Abdomen and legs normal. 

 Wings with dense scales on the veins of the apical area, those on the first 

 long vein and the branches of the second dense, intermediate in form 

 between Culex and Tamiorhynchus, those on the upper branch of the 

 fourth shorter and broader than the rest. 



This genus is very marked and comes between the Stegomyian group 

 and the true Culex. It can at once be told by the cephalic scale 

 structure, and the densely hairy antennae are also very characteristic. 



