234 Orthorrliapha brachycera. 



H. stigmatica seems like the preceding to be somewhat rare in 

 Denmark, and has hitherto only been taken in Jutland; Holstebro 

 (H. J. Hansen), at Hald near Viborg (the author), at Hobro (Jacob- 

 sen) and Tinbæk Mølle at Lindenborg Aa (J. P. Kryger); it has been 

 taken from ^^/e to August. It occurs on quite the same localities as 

 the preceding and together witli this and the following. 



Geographical distribution: — Europe down intoSpain; its northern 

 limit lies in Denmark (see below). 



Remarks: The above two species are certain and distinct, but 

 the earlier descriptions, which were for the greatest part based on 

 the colours, are often misleading. Loew, as is well known, took the 

 two species together with the following as varieties, or more correctly, 

 as stages of maturity of one species. Schiner's discription of stigma- 

 tica is also incorrect. I have in the synonymy followed the Kat. pa- 

 låarkt. Dipt. , but I think it otherwise possible, that Zetterstedt's 

 monostigma is identical with the present species, which also was the 

 opinion of Schiner, and Loew (1. c. 241) says the same. If so the 

 present species goes towards the north to middle Sweden. Whether 

 Meigen's precatoria and monostigma belong to precatoria or stig- 

 matica is, I think, not possible to decide after his descriptions; 

 what he says about the colour points towards stigmatica. 



3. H. melanocephala Hal. 



1883. Hal. Entom. Mag. I, 158. - 1882. Mik, Wien. ent. Zeitg. I, 41, 

 Tab. I. Fig. 16— 18. — 1903. Kat.palaarkt.Dipt.il, 268. — Hemerodromia 

 flavella: 1838. Zett. Ins. Lapp. 543, 4 et 1842. Dipt. Scand. I, 256, 6. — 

 1862. Schin, F. A. I, 83. 



Male. This species resembles stigmatica very much. Frons brown- 

 ish yellow. Antennæ yellow, arista short. Thorax yellow, somewhat 

 greyish pruinose, with two indistinct brownish stripes, and in the 

 middle a lighter, somewhat yellowish stripe. Abdomen brownish, 

 venter yellow. The genitalia have the ventral lamella small, not pro- 

 truding, the upper lamellæ dark brownish, with a round excision at 



Fig. 100. Wing-part of H. melanocephala. 



the apex, which is thns divided into two processes; the lower la- 

 mellæ yellow. Legs yellow, the last joint on all tarsi dark brownish 

 or blackish, the fourth joint slightly brownish. The legs haired and 



