( 196°) 
IV. British Limnobiidae: Some Records and Corrections. 
By F. W. Epwarps. 
Prates I, If. 
{Read March 16th, 1921.] 
Since the late Mr. G. H. Verrall published his notes on 
the British Tipulidae (crane-flies) in the Entomologists’ 
Monthly Magazine for 1885-7, very little work has been 
done on these insects in this country. Quite recently, 
however, Prof. de Meijere has undertaken a revision of the 
Dutch species, studying in particular the male hypopygium. 
His papers (published in the Tijdschrift von Entomologie, 
Deel Ixii, 1919, pp. 52-97, pls. 2-10, Deel Ixii, 1920, 
pp. 46-86, pls. 2-10, and Deel Ixii, 1921, pp. 54-118, 
pls. 3-10) will be found indispensable to British students 
of the group, since the British and Dutch faunas are 
very nearly the same. With the following notes as a 
supplement to de Meijere’s papers, the determination of 
the British Limnobidae should now be comparatively 
easy. In the preparation of these notes the whole of the 
rather extensive collection in the British Museum has been 
studied, also the more limited material in the Cambridge 
and Edinburgh museums. The writer is further indebted 
to his friends Mr. H. Britten, Prof. J. W. Carr, Mr. A. E. J. 
Carter, Mr. C. A. Cheetham, Mr. J. E. Collin, and Mr. A. H. 
Hamm for the loan or presentation of material. 
The result is that no fewer than 53 species are added 
to the British list, of which it has been found necessary to 
describe 14 as new. Unfortunately there are also a large 
number of changes in nomenclature to be made, all neces- 
sitated by a rigid application of the rule of priority. Though 
in the present writer’s opinion there is much to be said 
against this principle, it seems at present the only way 
by which finality can be reached, and it is reasonable to 
hope that very few further changes will be needed in the 
future, 
The present paper is in some sense a revision of the 
British Limnobiid fauna, but reference is omitted to those 
species which were satisfactorily dealt with by Verrall, 
and his papers must therefore be used in conjunction with 
this one. Treatment of the Tipulidae (in the restricted 
sense) is reserved for a future occasion. 
TRANS, ENT. SOC. LOND. 1921.—PARTS I, 11. (SEPT.) 
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