210 Orthorrhapha brachycera. 



— Front coxæ black-haired, or only a little indistinctly pale- 

 haired; acrostichal hairs distinct 6. 



6. Front coxæ more or less yellow at apex 6. cupreus. 



— Front coxæ not yellow at apex 7. 



7. Anterior tibiæ yellow, hind tibiæ black 7. blepharosceles. 



— All tibiæ yellow 8. 



8. Antennæ black, third joint not very small S. gramineus. 



— Antennæ more or less reddish at base, third joint very 



small 9. microcerus. 



1. C. neglectus Wied. 



1817. Wied. Zool. Mag. I, 74, 22 (Dolichopus). — 1824. Meig. Syst. 

 Beschr. IV, 41, 1, Tab. XXXV, Fig. 10. — 1862. Schin. F. A. I, 186. — 

 1874. Kow. Verhandl. zool. bot. Geselh Wien, XXIV, 458,1, Taf. XIII, Fig. 

 1-5. — 1903. Kat. palåarkt. Dipt. II, 319. — Chrysotus femoralis Meig. 

 1824. Syst. Beschr. IV, 42, 5. — Chrysotus taeniomerus Meig. 1830. Syst. 

 Beschr. VI, 362, 10. — 1843. Zelt. Dipt. Scand. 11, 485,6, p. p. — Doli- 

 chopus viridulus Fall. 1823. Dipt. Suec. Dol. 18, 23. — Chrysotus viridulus 

 1843. Zett. Dipt. Scand. II, 482, 2. 



Male. Vertex and frons green. Epistoma green, slightly whitish 

 pruinose, very narrow downwards, the eyes almost touching. PaIpi 

 small, yellow. Occiput greenish, greyish pruinose; postocular bristles 

 black above, yellowish below. Antennæ black, third joint of moderate 



Fig. 67. Antenna of C. negledus d, from the inside. X HO. 



size, broader than long. Thorax bright green, sometimes more æneous 

 or coppery, slightly pruinose, shining. Pleura greenish, grey pruinose; 

 propleura with two black bristles. Abdomen bright green, sometimes 

 æneous or somewhat bluish ; it is clothed with short, black hairs, and 

 has hindmarginal bristles, long on the first segment; the eighth seg- 

 ment with a few, short, stubby bristles at the lower margin. Venter 

 green or bluish green, with short, black hairs. Legs yellow, the front 

 coxæ may be more or less grey at the base, posterior coxæ grey, 

 with the trochanters yellow; sometimes the hind femora are more or 

 less dark above, especially towards the apex, and they may here be 

 metallic green; tarsi brownish or blackish towards the end, or darker 



