1905.] 59 



Girsehner (Wien. Ent. Z., 1898, p. 152) that additional dia<2;nostic 

 characters are furnished by the presence of an anterior intra-alar 

 bristle, and by the colour of the frontal stripe (Stirnstrieme) ; in 

 certain positions the whole of the front, including the frontal stripe, 

 appears whitish or cinereous. The ? is remarkable for the fact that 

 the front tarsi are scarcely, if at all, expanded. 



In Verrall's " List of British Dijjfera," 2nd Ed., Dec. 1901, p. 25, 

 Erigone afpendiculata., Macq., is among the species given in italics 

 as requiring confirmation Brauer (SB K. Akad. Wiss., &c., Bd. 

 cvii, p. 540) mentions the species in question as a possible synonym 

 of E. trimcata, Ztt. ; but if we rely upon Macquart's original 

 figures of the head and antenna of the ^ of his species (Ann. Soc. 

 Ent. Er., IT, T. 6, 1848, PI. 6, Figs. 3, 3«) this cannot be so, since the 

 third joint of the antenna is apparently not expanded at all. Again, 

 the species introduced by the late Mr. Meade (Ent. Mo. Mag., 2 

 ser., vol. ii, 1891, pp 230-231) as Nemorcea appendiculaia, Macq , and 

 determined from a single ^ in Mr. Dale's collection, must also be 

 distinct, since Meade states that the scutellum is '• quite black," 

 whereas in E. truncata, Ztt,, it is conspicuously redish on the distal 

 half. 



It is hoped that the facts thus briefly set forth may serve to 

 establish the right of the two species forming the main subject of thia 

 paper to be regarded as real additions to the List of British Dipfera, 

 and British students of the Order will doubtless agree that the 

 indefatigable collector to whose efforts the additions are due, is 

 heartily to be congratulated upon the result. 



Those who wish to make a further study of the difficult genus 

 Erigone, should on no account neglect Brauer's paper (SB. K. Akad. 

 Wiss. Wien., math.-naturw. CL, Bd. cvii, 1898, pp. 530-540), to 

 which reference has already been made above, and without which 

 the present contribution would have been impossible. A tabular 

 system is adopted, enabling many species to be determined, the 

 identity of which might otherwise remain doubtful, while the paper 

 concludes with an " Alphabetical List of the Species of the Group 

 Erigone, and their probable Synonymy." One somewhat discon- 

 certing result of Brauer's statements may be pointed out in closing 

 these remarks. According to Brauer (loc. cif., p. 542) Tachina 

 strenua, Mg., is a synonym of T. rudis. Fin., which, apud Brauer, is 

 the type of the genus Panzeria, Rob.-Desv. ; Panzeria lateralis, Eob.- 

 Desv. (Essai sur les Myodaires, p. 69, 1830), being also a synonym. 

 So far as may be judged from a careful comparison of the original 

 descriptions, Brauer's conclusion as to the synonymy is sound, and it 

 follows that the Erigone strenua of Verrall's List (the largest of our 



