Chrysogaster. 119 



et 1855. XII, 4670, 3 et 1859. XIII, 6023, 3. — 1862. Schin. F. A. I, 

 270. — 1901. Verr. Brit. Fl. VIII, 201,5, fig. 209. — 1907. Kat. palåarkt. 

 Dipt. III, 18. — Chr. cupraria Macq. 1827. Soc. Se. Lille, 194 et 1834. 

 Suit. å Buff. I, 562, 8. — 1838. Meig. Syst. Beschr. VII, 122, 19. — 

 Chr. coenotaphii Meig. 1830. 1. c. VI, 351, 15. — 1862. Schin. F. A. I, 267. 



Male. Vertex frons and epistoma æneous black, shining, especi- 

 ally the frons; this latter considerably puffed out, with a longitudinal 

 impression; epistoma narrowly pruinose all across below the antennæ, 

 and also else a little dusted, soniewhat striated at the sides ; the cen- 

 tral knob large but slightly produced, and the mouth edge not pro- 

 duced at all; frons and epistoma very broad, more than twice as 

 broad as the diameter of the eye. Vertex and frons with long, blackish 

 or brownish hairs, on the frons only present towards the margin; 

 epistoma with few, short, pale hairs. Occiput æneous or bluish black, 

 with short hairs which are black above, whitish below and on the 

 jowls. Antennæ a litte larger than in solstitialis, brown or brownish 

 red, the basal joints dark; second joint with some long, pale bristles 

 below; arista much longer than the antennæ. Thorax æneous black, 

 punctate, slightly shining; in the middle of the front part a more or 

 less distinct duU black stripe; scutellum coarsely punctate, not marginale. 

 Thorax and scutellum clothed with longish, blackish hairs; pleura 

 somewhat greenish, likewise with blackish hairs ; above the front coxæ 

 and on the hypopleura they are grey pruinose, duU. Abdomen 

 dull velvet black on the disc, æneous or æneous black and shining 

 at the extreme side margin and the apex; it is clothed with short, 

 dark hairs, paler at the sides backwards and whitish on the genitalia ; 

 second segment with long, yellowish hairs both on the disc and at the 



Fig. 55. Wing of C. chalyheata c?- 



sides. Venter æneous, brightly shining, with short, pale hairs. Legs 

 black, haired as in solstitialis, hind femora likewise black setulose 

 beneath. Wings a little yellowish, with a more or less distinct dark 

 yellowish or brownish cloud on the middle, the base distinctly yellow; 

 stigma yellow or light brownish; upper marginal cross-vein a little 



