(igat a 
XII. Notes on British Mycetophilidae. By F. W. Epwarps, 
B.A., F.E.S. 
[Read May 7th, 1913.] 
(Published by permission of the Trustees of the British Museum.) 
Puates XII-XVIII. 
In the preface to his List of British Diptera, published in 
1901, the late Mr. G. H. Verrall said of the British Myceto- 
philidae, “ this family, though much improved, is still in a 
most unfinished condition.” The truth of this remark will 
be appreciated when it is stated that in the following notes 
no fewer than 124 species are introduced as new to the list, 
while nearly 50 names have been proved to be synonyms 
or wrongly identified ; so that the net total of additions is 
about 70. But Mr. Verrall’s remark is still true to some 
extent, for several genera remain more or less unworked, 
while even in those which have been studied most, it 1s 
evident that many more species remain to be found in 
Britain, since so many of those now known are represented 
by single specimens only. 
The large increase in the number of British species here 
made would hardly have been possible from the study of 
a single collection, and the writer desires to express his 
thanks to all those to whom he is indebted for the loan of 
specimens, for the gift of material to the National Collection, 
and for help in other ways. Of these gentlemen particular 
mention must be made of Mr. F. Jenkinson of Cambridge, 
who has very kindly read the proofs of this paper and 
contributed many useful suggestions, besides giving the 
writer access to the whole of his very extensive collections. 
In the following notes an asterisk has been placed against 
each species or genus recorded for the first time as British, 
and the initials of the collector are placed in brackets after 
each record. The collectors, with the localities from which 
they have mainly obtained their material, are as follows :— 
F.C.A. Mr. F. C. Adams. New Forest. 
K.A.A. Mr. KH. A. Atmore. Kine’s Lynn. 
A.K.J.C. Mr. A. E. J. Carter. Perthshire. 
J. EC. Mr. J. EH. Collin. Various localities. 
TRANS. ENT. SOC. LOND. 1913.—PART II. (SEPT.) 
