THEREVID.^:— SCENOPINID^ 763 



52 A. venustus Meig. is a distinct species from South-west Europe, which Walker 



gave as a synonym of A. hottentotta (List Dipt. Brit. Mus., i., 2G0). 



53 A. fascintus Meig. is a little known South European species which was also 



included under the synonyms of the supposed British A. hottentotta by 

 Walker (List Dipt. Brit. Mus., 260). It was also included by Stephens 

 amongst his synonyms of A. circumdata. 



54 A. Ahhadon Fabr. Saniouelle (I., 3, 1833, according to Stephens) included this 



species as British under the name of A. Abaddon, and Walker included its 

 synonym, A. concinria Meig., under his synonyms of the supposed British 

 A. hottentotta (List Dipt. Brit. Mus., 2G0). 



55 A. leucostoma Meig, This is also a South European species which was included 



by Walker (List. Dipt. Brit. Mus., 260) under his synonyms of A. hottentotta. 



THEREVID^. 



56 Thereva Jlavilabris Meig. This species, which has not been clearly recognised 



since its description, was recorded as British in Stephens' Catalogue. Seven 

 specimens under this name in the old collection of the British Museum are 

 females of T. nobilitata, and along with them is one female of I". 2^lebeia. 



57 T. taeniata Meig. This is now considered to be a variety of T. arcuata Ltv., 



but was recorded in Stephens' Catalogue and was represented in his collec- 

 tion in the British Museum by females of T. 2)lebeia L. Walker also recorded 

 it as British (List Dipt. Brit. Mus., p. 221). 



58 T. funebris Meig. is another unrecognised species which from its name might 



be T. itrsina Wahlb. (T. circumscripta Lw.) ; Walker (Ins. Brit. Dipt., i., 75) 

 recorded it as " Rare. In Mr Stephens's collection," and his description except 

 for " brown femora"' might apply to almost any species of Thereva in which 

 the male has yellowish pubescence. 



59 T. aibipennis Meig. is another unrecognised species which was included in 



Stephens' Catalogue. Meigen's species may be the same as T. didyma Lw., 

 but Zetterstedt's T. albipennis is more likely to be a synonym of T. marginida 

 Meig., a not improbable British species. 



60 T. cincta Meig. This is now believed to be a synonym of T. nobilitata Fabr., 



and Walker's description (Ins. Brit. Dipt., i., 75, T. ii., fig. 11) probably applies 

 to that species. In the old collection at the British Museum 7\ cincta is 

 represented by a number of males of 7\ nobilitata intermixed with some 

 specimens of T.jdebeia. In the Entomological Club collection the specimens 

 under T. cincta are all T. plebeia, but the T. plebeia of that collection is 

 mainly represented by males of T. nobilitata with I believe one or tAvo males of 

 T. circumscripta intermixed. In Dale's collection I think the specimens under 

 T. cincta are four females of T. nobilitata and two of T. plebeia. 



61 T. fuscijiennis Meig. This species was recorded by Benjamin Cooke in 1878 



(Entom. Mo. Mag., xv., 19) in mistake for Psilocephala ardea Fabr. If my 

 knowledge of T. fvscipennis be correct, it is a Psilocephala in which the 

 female is very much like P. ardea but with the veins on the base and fore 

 part of the Aving conspicuously blacker, and of Avhich the male is quite 

 distinct. 



SCENOPINIDiE. 



62 Scenojnmis glabrifrons Meig. This species was erroneously introduced by me, 



as explained on page 600. 



