206 [Seiitetuber, 



it u great number of species now assigned to several genera. Scbiner, 

 Verrall, and others followed their example, but E-ondani (Dip. It. 

 Prodr., iii, p. 72) and Brauer and von Bergenstamm (Zweifl. des K, 

 Mus. zu Wien, iv, IIG) have restricted it to pellucid'/, Meig. {con- 

 juncta, Kdi.), and its allies, and as these are now separated widely 

 from the rest of Meigen's genus Nemorea, including the species now 

 under consideration, and do not appear to be British, we have done 

 with that name in this connection. Erigene, another of Robineau 

 Desvoidy's genera, which he founded for eight new species, six of 

 which are given as synonyms of radicum, Jb\, by Scbiner was selected 

 by Brauer and von Bergenstamm as the name to take its place, not 

 only for their restricted genus to which radicum belongs, but also for 

 the section or supergenus which includes rudis, Fall., ccesia, Fall., and 

 most of the species which ISchiner, Verrall, and other recent writers 

 put in the genus JVemorcea, sens. lat. This would have done nicely, 

 but unfortunately it had been used before for a genus of spiders, 

 and so 8peiser (Berl. Ent. Zeit., 1903, p. 69) proposes the name 

 Varichceta, which I suppose we must now use. 



Since the publication of Mr. Verrall's last list of British Diptera 

 in 1901 I have already noted a considerable number of additions to 

 the British fauna ; some of these have been already recorded, and 

 a greater number 1 do not consider ripe for recording, but 1 take 

 advantage of this article to mention the following : — 



Viviania cinerea, Fin., in italics in the list, has been taken by 

 Dr. J. H. Wood at Checkly, Herefordshire, 15.VIi.99. 



Exorista. This is a vei'y difficult genus, and 1 have several 

 additions, but they may easily be wrongly identified, so that for the 

 present 1 will only just mention their names tentatively : grossa, B. 

 and B. ; intermedia, B. and B. ; glirina, itdi. ; fugax, Kdi. ; and an- 

 tennata, B. and B. ; and ugnata (lidi.), S., which is in italics, 1 can 

 confirm. As a matter of fact 1 believe all these to be correctly 

 named, but if preparing a list like Vei'rall's should adopt his plan of 

 *' italics " for the sake of caution. 



Tricholyga major, liond. A distinct species, of which I have both 

 sexes, and half a dozen specimens bred from larvae of Saturnia pa- 

 vonia, L., found in Sutton Bark. 



Ptilops nigrila, Fall., a distinct little species, similar to, but much 

 smaller than, chalybeata, Meig., which will probably prove not un- 

 common. 1 have not seen many specimens yet, but Dr. Wood seems 

 to find it not uncommon, as he has taken it on several occasions and 

 in several localities in Herefordshire (Cusop Dingle, Haugh Wood, 



