114 



Tachinidae. 



segment on ventral side protruding 

 downwards, imited and beset with 

 spinules. Hind trochanters densely 

 spinulose below, 



Length 3,5 — 5 mm. 

 B. melaniira is rare in Denmark, 

 and it has only been taken at Tis- 

 vilde, but here it was taken in large 

 numbers in July 1913 and 1914 (I. C. 

 Nielsen). 



Geographical distribution: — Eu- 

 rope and in Transcaspia; towards 

 the north to southern Sweden, and 

 in Finland. 

 Remarks: I have examined specimens of melanura from Zetter- 

 stedt's collection and of his Wahlbergia dimidiata; they are both 

 melanura. The specimens of dimidiata I have seen belong to those 

 described in XIII, 6159. Whether the specimen from Glogau, on 

 which Zetterstedt in III, 1225, obs. originally established the species, 

 really is another species cannot be seen of the description; at present 

 it is considered genotype of Wahlbergia and identical with appendicu- 

 lata Perr., but as Zetterstedt does not mention any important char- 

 acter (f. inst. scutellum with three bristles) I think it possible that 

 it is also melanura. 



Fig. 17. B. melanura $, abdomen. 



11. ^WebeFia R. D. 



Small or at most medium sized species, black with or without 

 some pruinosity. Head broader than thorax, slightly convex behind 

 and a little pufTed out below, a little higher than long. Frons quite 

 narrow or somewhat broad in male, in female broader, slightly 

 protruding. Jowls quite narrow. Somewhat small ocellar bristles 

 present; male with or without verticals, female with inner and 

 outer verticals and two orbitals. Postocellar and occipital bristles 

 distinct. Behind postocular bristles black hairs. Frontal bristles 

 reaching to or about to insertion of antennæ, in female a more or 

 less outwards directed bristle above. Cheeks bare. Vibrissæ not 

 ascending. Epistoma not retreating, somewhat reflected below. 

 Oral cone and proboscis somewhat long; clypeus linear, excised in 

 about apical half. Palpi more or less thread-like. Antennæ inserted 



