Ghrysogaster. 



109 



gaster metallica 1822. Meig. Syst. Beschr, III, 267, 3. — 1843. Zett. Dipt. 

 Scand. II, 820, 5 el 1849. VIII, 3178, 5. — 1843. Loew, Stett. ent. Zeitg. 

 IV, 211. — Chr. violacea Meig. 1822. 1. c. III, 267,2. — 1843. Loew. 1. c. 

 IV, 210. — 1862. Schin. F. A. I, 269. — Chr. grandicornis Meig. 1822. 

 I. c. III, 270, 7. — 1843. Loew, 1. c. IV, 253 et 1857. Wien. ent. Monatschr., 

 I, 6. — Chr. discicornis Meig. 1822. 1. c. III, 270, 8. 



Male. Frons broad, about one third of the breadth of Ihe head. 

 Vertex, frons and epistoma metalllc green; frons with a transverse 

 depression below the ocellar triangle and a small dot-like impression 



Fig. 48. Antenna of L. metallina cJ, from the inside, x 70. 



above the antennæ ; on the upper part it is coarsely punctate. Epistoma 

 retreating downwards but strongly produced at the mouth edge, more 

 protruding than the antennal prominence. Vertex and frons with pale 

 yellow, epistoma with white hairs, longest on the eye-margins. Occiput 

 greenish, a little pruinose, pale haired. Antennæ black, third joint 

 large, disciform, a little broader than long; arista about as long as 



Fig. 49. Wing of L. metallina c?- 



the antennæ; in single cases the third joint may be yellowish beneath. 

 Thorax metallic green or somewhat brassy, in front it has traces of 

 two approximated, more brass-coloured stripes; it is densely punctate 



