SIMULIUM. 195 



fan-shaped row of yellow hairs towards each side on the first 

 segment. Belly black. Legs : normally, fore coxae brownish 

 yellow or pale yellowish, posterior coxae black or blackish grey, 

 Femora principally reddish brown or brownish yellow, with a 

 broader or narrower apical band, this band generally wide on 

 the posterior legs ; often the fore femora wholly pale ; sometimes 

 the remaining femora also almost wholly so. Tibiae generally 

 with the basal half (or rather more) brownish yellow, the re- 

 mainder black^ sometimes wholly dark brown or brownish black ; 

 a slight whitish grey sheen is visible in some specimens when 

 viewed from above. Tarsi blackish or dark brown, basal half of 

 metatarsus normally pale, the extent of the colour varying con- 

 siderably ; fore tarsi (male and female) not widened, metatarsus 

 barely as long as rest of tarsus, whole tarsus distinctly longer 

 than tibia ; middle tarsi in both sexes about as long as the tibia, 

 metatarsus equal to the remainder of the tarsus ; hind tars| of 

 male considerably thickened, three-fourths as long as tibia, and 

 distinctly longer than the rest of the tarsus, the whole tarsus 

 a little longer than the tibia ; hind tarsus of female of the same 

 proportion as in the male, but less thickened. The coxae, femora, 

 outer side of tibiae, and the underside of the hind metatarsus 

 (the latter in male only) bear golden-yellow hair more or less 

 prominently in male, more sparsely in female. Wings clear, 

 venation normal. Halteres brownish or brownish yellow. 



Length 2-3 millim. 



Described from two males and two females from Umling, Assam, 

 iii. 07 (including type male), and several females from Kanai-a, 

 Bombay, viii. 07 (including type female), all in the Pusa 

 collection. 



Although none of the specimens are in good condition, the 

 specific characters as illustrated by the full series seem to be 

 sufficiently distinctive from S. indicum to warrant a claim to 

 specific rank. The differences I perceive are, (i) the abdomen is 

 wholly black, instead of yellowish at the base ; (ii) the blackish 

 grey, not whitish grey sides to the thorax; (iii) the barely 

 widened fore tarsi in the female, compared with the conspicuously 

 widened first two joints in S. indicum. The amount of bright 

 yellow hair also appears greater in this species, especially on the 

 legs. 



