118 Orthorrhapha brachycera, 



middle femora are not tuft-like. In the female the wings are much 

 strenger tinged, and also the pennation of the legs is dififerent, 

 especially the posterior tibiæ are pennate on the dorsal side, which 

 is not the case in vernalis. Strobl (1. c.) says nothing about this 

 difference in the pennation, but it is present in my specimens and 

 also in specimens sent to me from Mr. Becker. 



E. lamellicornis is very rare in Denmark, only three specimens, 

 a male and two females, are known, taken by Stæger many years 

 ago, probably in Ordrup or the neighbourhood. 



Geographical distribution : — Middle Europe down into Styria , 

 Switzerland and Spain; it seems to have its northern limit in Den- 

 mark as it is not known from Scandinavia, but it has perhaps not 

 always been recognised. 



A third species, much resembling the two preceding, is E. pen- 

 naria Fall. ; it is not found in Denmark hitherto, but will probably 

 be found here, as it is known from Scandinavia, England and Germany. 

 The male genitalia are constructed as in venialis, but the eighth 

 segment is not flat, black and shining above, but grey as the whole 

 abdomen, and there seems to be no tubercles or hooks at the sides; 

 the hairs on the genitalia are pale. The bristles below at the base 

 of the middle femora are less densely placed. The female has the 

 wings generally more tinged than vernalis but less than lamellicornis, 

 and the specimens I have examined have the hind, but not the 

 middle tibiæ pennate on the dorsal side. In both sexes the thorax 

 is less distinctly striped than in vernalis. 



18. E. chioptera Fall. 



1815. Fall. Dipt. Suec. Empid. 21, 11. — 1842. Zett. Dipt. Scand. I, 

 376, 9. — 1862. Schin. F. A. I, 106. — 1867. Loew, Berl. Eut. Zeitschr. 

 XI, 43 et 54, 14. — 1903. Kat. palåarkt. Dipt. II, 234. 



Male. Eyes contiguous; epistoma dark grey. Occiput grey, with 

 yellowish hairs, only quite above with black hairs. Labrum only a 

 httle longer than the head is high; palpi black, slightly haired with 



Fig. 39. Antenna of E. chioptera. x 100. 



brownish hairs. Antennæ shorter than the head, black, the two first 

 joints with a few short hairs. Thorax grey, with a faint indication 

 of three darker stripes. The dorsocentral and acrostichal bristles 



