200 E. Beclicr — A new Species of Simulmm from Assam. [No. 3, 



short, scarcely reaching the middle of the wing, the principal branch 

 longer, running out near the third longitudinal vein ; the second longi- 

 tudinal vein wanting ; the third branching off from the first before the 

 middle, running into the marginal vein far before the apex of the wing ; 

 the three first veins thick and distinct ; the succeeding ones very weak ; 

 the fourth longitudinal vein forked at the so-called small transverse 

 vein, the prongs of the fork hence much longer than the handle, the 

 upper prong slightly bisinuous, the lower almost straight ; the fifth 

 vein straight, a little bent outwards ; the sixth strongly bisinuous ; the 

 axillary vein not reaching the hinder margin, slightly sinuous ; between 

 the fourth and the fifth veins a straight, very distinct fold ; a similar 

 though weaker fold behind the sixth vein. Halteres uncovered, dazzling 

 white. 



Legs : coxse dark, trochanter long, yellowish ; femora and tibisB 

 throughout black-brown, metatarsus lighter at the base, a little shorter 

 than the tibia ; all the tibiee with spurs, metatarsus of the third pair of 

 legs notched at the apex (figs. 5, 6), those of the two first pairs trun- 

 cate, spurred ; the fourth tarsal joint expanded into a heart-shaped 

 figure ; the fifth longish clavate, with long divergent curved bristles, 

 which in the first pair of legs are seated on the third tarsal joint ; legs 

 thickly covered with hairs, particularly on the tarsus, ungues small, 

 pulvilli rudimentary. 



Abdomen short, of eight segments ; the first segment is the broadest 

 and, like the sternal parts of the three succeeding segments, yellowish ; 

 the genital parts a little projecting. 



The above-described species of Simulium is the first that has yet 

 been made known from Asia, as only a few non-European forms have 

 hitherto been described, whereas the number of European species is not 

 inconsiderable. 



The larvae and the pupoB (figs. 11, 12, 13) of the European species 

 live in water ; the latter in conical (tutenartigen) cocoons attached to 

 stones, stalks of grass, confervas, and the like. 



Explanation of Plate XIV. 

 Fig. 1. Simulium indicum, $, x 8. Fig. 2. Wing x 8. 3a. A leg of tlie first 

 pair X 15. Fig. 3b. Tarsus of the same leg x 60. Fig. 4a. A leg of tlie second pair x 

 15. Fig. 4b. Tarsus of the same x 60. Fig. 5a. A leg of the third pair x 15. Fig. 56. 

 Tarsus of the same x 60. Fig. 6. Head from in front x 30. Fig. 7. Antenna x 90. 

 8. Mandible x 90. Fig. 9. Hjpopharynx x 90. Fig. 10. Maxilla and palp x 90. 

 Fig. 11. Larva of Simulium ornatum, Mg. x 6. Fig. 12. Pupa of Simulium sp. in 

 its conical cocoon. 



