394 Orthorrhapha brachycera. 



tibiæ with a few bristles above. Wings a little yellowish tinged, most 

 towards the anterior margin; veins brown; discai vein slightly cm'ved 

 and slightly converging towards the cubital vein. Squanmlæ and 

 fringes yellow. Halteres yellow. 



Female. Epistoma a little broader than in the male, for the rest 

 quite similar to it. 



Length 2,5— 2,8 mm. 



X. tenellus is much rarer in Denmark than the preeeding species; 

 Ordrup Mose, Ermelund, Tisvilde, Faxe Ladeplads; it has thus hitherto 

 only been taken on Sealand. My dates are ^^/e — ^^/s. It occurs in 

 similar localities as ornatus. 



Geographical distribution: — Europe down into Italy; towards the 

 north to middle Sweden, and in Finland. 



31. Batliycpanium Strobl. 



Somewhat similar to Xanthochlorus in the exterior, but quite 

 distinct. Head a little broader than thorax, about semiglobular, slightly 

 arched behind. Vertex a little excavated (not strongly as Strobl says, 

 his specimen may have been shrivelled), ocellar tubercle a little pro- 

 minent. Frons broad, slightly narrowed towards the antennæ. Ocellar, 

 outer vertical and postvertical bristles present, and besides a pair of 

 small hairs on the posterior side of the ocellar tubercle. Eyes large, 

 short-hairy; they are touching (or almost so) below the antennæ for 

 a long distance in the male, well separated in the female. The posto- 

 cular bristles in a single row, besides some hairs on the lower part 

 of occiput. Antennæ inserted near to each other, highest in the male; 

 they are a little elongated in the male, short in the female; the first 

 joint obconical, the second short, on the inside triangularly overlapping 

 the third, this latter is elongated triangular and pointed in the male, 

 short and roundish triangular in the female ; arista dorsal, rather near 

 the apex ; it is longer than the antennæ, its first joint somewhat short. 

 The first antennal joint is distinctly hairy above, the second has bristles 

 at the apical margin, longest above, the third is somewhat long-hairy, 

 the arista distinctly pubescent. Epistoma in the male only present 

 above as an elongated triangle, in the female moderately narrow ; 

 clypeus short and small, very small in the male, indistinctly separated 

 from the epistoma, and not reaching the lower margin of the eyes. 

 Proboscis not or almost not protruding, it and the oral aperture 

 somewhat larger in the female than in the male. Thorax rectangular, 

 high, and somewhat arched above; it has only an indistinct flat area 

 behind (Strobl says about this "sehr deutlich"). Pro- and metathorax 



