156 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



to occur is P. sublugubris, Wood, which is very scarce. 



A large number of those late species hibernate and appear 

 the next spring. The hibernation quarters are generally thick 

 furze branches, clumps of grass or ferns, under bark, etc., or in old 

 nests. I have seen numbers of P. rufipes under the packing on 

 bee-hives during winter. Though the list of local species is now 

 fairly large, I have a good many that I do not include in it, as 

 they have not been worked out yet ; but I know, from what I can 

 ascertain from my material at hand, that we must have almost as 

 many more species as there are included in this list. 



The Diptera of Clyde (Third List). 

 By R. Henderson. 



[Read 26th May, 1908.] 



An * distinguishes the species not recorded in Mr. P. H. 

 Grimshaw's list (Fauna and Flora, &c, of Clyde, 1901), and the 

 species so distinguished in my former lists are marked ** 

 where additional records are now given. 



Classification and nomenclature. — Verrall: List of British 

 Diptera, 1901, with a few exceptions. 



Abbreviations. — These are as before, with the following 

 additions : — 



Frankfield = Frankfield Farm and Frankfield Loch ; 



Mt. Stuart = Mount Stuart Estate, Bute, and the adjoining shore; 



Kilchattan Bay = The Black Park, Suidhe Hill and Wood, and 

 the ground about the Reservoirs ; 



South Bute = Glen Callum Bay and St. Blane s, Dunagoil Bay, 

 and the marshy tract lying to the south of the Kilchattan Golf 

 Course. 



Fam. LiMNOBiDiE. 



** Anisomera osqualis, Lw.,- 



About a score of specimens of 

 both sexes taken Glen 

 Massan, 16th June, 1906 

 (A. R., J. J. F. X. K., and 

 R. H). 



