270 A Moyiograpli of Culicidae, 



Genus TRICHORHYNCHUS. Theobald. 

 Journ. Bomb. Nat. Hist. Soc. XVI., p. 240 (1905). 



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 segments, verticillate hairs scanty, the internodes 

 densely hairy ; palpi of J rather prominent, apical segment long, 

 slightly swollen. Thorax with narrow-curved scales, also the 

 scutellum. Abdomen and legs normal. Wings with dense scales 

 on the veins of the apical area 3 those on the first long vein and 

 the branches of the second dense, intermediate in form between 

 Culex and TaeniorJiynchiis, those on the upper branch of the fourth 

 short 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. 



Trichorhynchus fuscus. Theobald (1905). 

 Journ. Bomb. Nat. Hist. Soc. Vol. XVI., p. 240 (1905). 



Head brown with a greyish border around the eyes and at 

 the sides composed of small flat scales. Palpi, proboscis and 

 antennae deep brown ; thorax tawny to testaceous brown ; pleurae 

 pale ferruginous. Abdomen ferruginous to dusky brown, brighter 

 brown beneath. Legs deep brown, paler basally; unbanded. 

 Wings rather short, fork-cells short. 



$? . Head with small flat grey scales forming a broad border 

 around the eyes and with similar flat scales at the sides, in the 

 middle small dull golden narrow-curved scales and fine black 

 upright forked scales behind. Palpi short, brown, testaceous 

 beneath ; proboscis brown, the testaceous hue present as in the 

 palpi ; clypeus pale yellowish-brown ; antennae brown, basal 

 segment pale yellowish-brown, very pilose between the verticels. 



Thorax bright ferruginous, clothed with narrow-curved mouse- 

 coloured and dull golden scales and with numerous bristles 

 of a more or less dull hue ; scutellum bright testaceous with 

 small narrow-curved scales as on the thorax ; seven border- 

 bristles to the mid lobe, metanotum bright chestnut-brown ; 



