190 SIMULIIDJE. 



with golden-yellow hair ; metatarsus much incrassated also, nearly 

 as large as the tibia, relatively larger than in any other Oriental 

 species, the basal halt' yellowish ; rest of tarsus black. The 

 hind tibiae and metatarsi with numerous long hairs on upperside. 

 Wings colourless, venation normal. Halteres brownish. 



Length barely 2 millim. 



Described from a perfect unique male from Kurseong, taken 

 28. iii. 10, by Dr. Annandale. 



Type in the Indian Museum. 



Erorn the general resemblance between the two species, it seems 

 possible that 8. griseifrons may be the female of this species. 



139. Simulium griseifrons, Brun. 



Simulium griseifrons, Brunetti, Rec. Ind. Mus. iv, p. 285 (1911). 



$ . Head : frons between one-third and one-fourth the width of 

 the head, grey dusted, without any vestige of gold hair; face 

 convex, blackish. Proboscis and labella reddish brown ; palpi 

 black. Antennae wholly black. Back of head blackish grey (seen 

 from above, whitish grey), with some black hairs, which form an 

 irregular fringe behind the eyes. Thorax (partly denuded) black, 

 apparently covered with short golden yellow pubescence. Scu- 

 telluui black, covered with gold pubescence and with a row of 

 long soft black hairs on hind margin. Sides of thorax blackish. 

 Abdomen black, the extreme edge of each segment pale. Legs : 

 fore coxae dull brownish yellow, posterior coxae black. Femora 

 brownish yellow, apical half black, the colour less pronounced and 

 less extensive on the fore pair. Tibiae, basal two-thirds yellowish, 

 apical third black; the outer sides of the tibiae, seen from above, 

 appear whitish. Tarsi black, the anterior ones with metatarsus 

 as long as the rest of the tarsus, but only slightly wider ; hind 

 metatarsus considerably incrassated, distinctly longer than rest of 

 tarsus, and with the basal half yellowish white. Wings clear ; 

 venation in accordance with the generic characters. Halteres 

 pale yellow. 



Length nearly 2| millim. 



Described from one female from Kalighat, Kumaon, 6000 ft., 

 Western Himalayas, taken by Mr. A. D. Irnms, 4. vi. 10. 



Type in the Indian Museum. 



Possibly the female of S. metatarsale. The only distinctive 

 character between them seems to be the difference in the size of 

 the hind metatarsus, and this is probably sexual. 



140. Simulium rufibasis, Brun. 



Simulium rufibasis, Brunetti, Rec. Ind. Mus. iv, p. 285 (1911). 



$ . Head : frons blackish grey, without trace of gold hair, face 

 light ash-grey. Proboscis and 'labella dull dark reddish brown ; 

 palpi black. Antennae black, basal two or three joints reddish 

 yellow. Thorax as in previous species, except that the scutellum 



