GASTROPHILUS. 401 



fore pair with sparse, nioilerately long, grey pubescence on inner 

 side, dense, shorter, grey pubescence on upper, and dense, sh(jrt, 

 black pubescence on outt^r, side ; posterior femora with mainly 

 yellowish-grey or brownish-grey pubescence, longest on hinder 

 side of miiklle pair. I ibitt! and tarsi brownish-orange, former a 

 little darker towards tips ; pubescence mainly yellowish, some stiff 

 black hairs on upper side of tarsi (and also in one specimen towards 

 tips of hind tibia) on inner side); metatarsi as long as remaining 

 four joints together, 5th joint about as long as 2nd ; fore tarsi 

 relatively shorter. Winr/s pale grey, nearly colourless, veins 

 brownish-yellow ; alar and thoracic squamae whitish, with pale 

 yellow borders, latter with a long fringe of whitish hairs. 



Lew/ch, 13-14 mm. 



Describr^d from a single d from Austria, and three 5 ? i'^ the 

 Indian Museum from liuwalpindi, 25.x. 1913, 15. x. 1911 and 

 19. X. 1912. In the iiritisli ^luseum are examples from Kuala 

 Lumpur (Federated Malay States), 1910 (Dr. A. J. Stanton), from 

 England, Siberia, ISJacedonia, Nova Scotia, Januiica and Cape 

 Colony. It occurs in most of Europe, and in North America. 

 The biology is discussed by Brauer, Mon. (Estr. p. 89. 



The conspicuous difference of appearance in the sexes is 

 remarkable, but; the species is easily distinguished from G. equi by 

 the black femora and clear wings. 



310. GastropMlus pecorum, Fabr* 



CEktrus pecorum, Fabricius, Ent. Syst. iv, p. 230 (1794). 

 Gastrophilm pecorum, Schiner, Faun. Austr. i, p. 391 (1862). 



Head. J : frons almost flush with eyes on upper part and only 

 slightly prominent below; at vertex barely one-lift li the linear 

 diameter of the head, with almost parallel sides for a short distance 

 but slightly widening at the extreme vertex ; lower part very 

 rapidly widening to about half the width of the head at the level 

 of the antenntc ; irreguhu'ly coloured, mainly brown with 

 yellowish and grey parts, wholly covered with long and moderately 

 dense, bright yellow pubescence ; ocelli ])ale yellow ish-white, large, 

 close together but not contiguous, on extreme vertex ; extreme 

 anterior margin of frons yellow ; head extending below eyes for 

 a distance equal to about height of eyes, yellowish, under side 

 wholly covered with long and dense, very bright golden-yellow 

 pubescence, wliicli extends as a thick fringe round the eye-margins 

 and over all the dark grey occiput ; antenna; entirely orange- 

 yellow, with yellow pubescence, arista black ; eyes quite bare. In 

 $, frons at vertex much more than one-third width of head, 

 rapidly widening to much more than half width of head at level 

 of antenna;, the pubescence much shorter and sparser and more 



* For a number of synonyms, 8eo Kert&z, Kiit. Paliiarkt. Dipt, iii, p. ."iOT 

 (1907). 



2n 



