518 A Monograph of Culicidae. 



Genus RACHIONOTOMYIA. Theobald. 

 Journ. Bomb. Nat. Hist. Soc, Vol. XVI., p. 248 (1904). 



Head clothed with flat scales only ; palpi moderate sized in 

 $ slightly clavate ; proboscis long, as long as the whole body ; 

 antennae of $ densely pilose, hairs rather long. Thorax clothed 

 with spindle-shaped scales ; scutellum drawn out into a large, 

 thick, backioardly projecting spine, hiding to a large extent 

 the metanotum, on the basal area of the scutellum flat scales, 

 which also occur on the base of the wings, the spine with 

 scales also, some flat, some on ventral surface forked. Abdomen 

 normal, but the scales large and rather loosely applied, giving a 

 faint ragged appearance. Wings with rather short fork-cells, 

 median scales on the branches of the second long vein thick and 

 dense, also on first long vein, lateral vein-scales scanty, linear 

 but broader than in Culex ; upper costal border spiny. Legs 

 normal. Male unknown. 



This genus is very marked, owing to the strange scutellar 

 process. It is the only genus in which I have seen any marked 

 structural peculiarity in the scutellum, all other genera having 

 the scutellum simple (Anophelinae) or trilobed (Culicinae, etc.). 



Rachionotomyia ceylonensis. Theobald (1904). 

 Journ. Bomb. Nat. Hist. Soc, Vol. XVI., p. 248 (1904). 



Head brown, with dull violet reflections and a grey border 

 around the eyes ; palpi, proboscis and antennae dark brown ; 

 proboscis as long as the body. Thorax brown to testaceous 

 brown, pleurae bright clear brown with some silvery white scales ; 

 scutellar spine brown. Abdomen deep brown above, ochreous 

 below, neither banded nor spotted. Legs deep brown, pale 

 testaceous at their bases. Wings with brown scales. 



$ . Head clothed with large flat scales, brown in some 

 lights, dull violet in others, around the eyes a border of dull 

 white or grey scales ; two black bristles project forwards between 

 the eyes, and traces of others at the sides ; proboscis deep brown, 

 as long as the whole body, curved upwards ; palpi deep brown ; 

 small, but prominent, clavate \ antennae deep brown with grey 

 pubescence and black verticillate hairs ; the globular basal 

 segment with a grey sheen. 



Thorax varying from deep brown to bright testaceous brown, 



