8 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



Classification and nomenclature. — Verrall : " List of British 

 Diptera" 1901, with a few exceptions, and "List of British 

 Dolichopodidce, with Tables and Notes," Ent. Mo. Mag., Yol. 

 XL., pp. 164-245, and Vol. XLL, pp. 50-252. 



Bibliography. — I had intended to note here the various papers, 

 chiefly those in the foreign Transactions belonging to the Society 

 and kept in the Mitchell Library, Glasgow, which I had 

 consulted for the determination of species, but this has been 

 rendered superfluous by the acquisition of the Katalog der Pala- 

 arktischen Dipteren, Budapest, 1903, in four volumes, of which the 

 three published volumes are now in the Society's library. The 

 Katalog is both a synonymic list and a key to the literature of 

 Diptera down to 1st October, 1903. 



Abbreviations. — These are as in my former paper quoted above. 



Mr. John R. Malloch has been good enough to send to me for 

 inspection or identification a number of flies collected by him 

 during the past season, and to him are due the records given 

 below as " Bonhill," too numerous to be distinguished otherwise, 

 among them being twenty-seven additions to the Clyde list. 



Fam. BiBiONiDiE. 



Dilophus femoratus, Mg., - 



albipennis, Mg., - - June. Cartland Crags ; Hawk- 

 head Est. ; Cambuslang. 



The synonymy is given on the authority of the Katalog der 

 Pal. Dipt. The $ <$ of my specimens have the legs 

 entirely black, the stigma very faint ; and the ^ <j) ? 

 taken at the same time and place, have the fore coxae 

 entirely, and all the femora more or less, red ; the stigma 

 blackish-brown. 



Bibio pomonce, F., - - July — August. Tarbert ;. Col- 



intraive ; Holy Loch ; Gare- 

 letter Point ; L. Long. 



B. leucopterus, Mg., - - May — June. Erskine ; Bowl- 



ing; Gorge of Avon; Bonhill. 



*B. nigriventris, Hal., - June. Cambuslang; Cartland 



Crags. 



*B. varipes, Mg., - - - August. Bonhill. 



B. laniger, Mg., - - May — June. Gen. dist. 



