56 Yorkshire Naturalists’ Union: Annual Report, 1910. 
from a joiner’s shop at Wrangthorn, Leeds, and the other sent 
to Mr. C. H. B. Turner from Scarborough. Mr. Corbett on the 
contrary, reports several fine examples of S. noctilio, but total 
absence of S. gigas at Doncaster. 
Mr. Geo. T. Porritt submitted an ichneumon fly, Cratichneumon 
nigritarsus, from Glaisdale. 
Of Hemiptera a goodly number were shown from East Riding 
localities by Mr. H. C. Drake, but, in the absence of a published 
list, it is not possible to specify any as new records for the county. 
Mr. M. Lawson Thompson reports Zicrona cerulea from Little- 
beck, near Whitby, and Mr. Porritt an example of Nabis 
flavomarginatus from Scalby Beck, Scarborough. 
In Diptera several species were collected by Mr. W. Harrison 
Hutton in the much built-up district of East Leeds, and Mr. 
J. H. Ashworth of Ilkley has continued his systematic work 
in that district, the results of which he has published in the Brad- 
ford Scientific Journal. 
The Committee has been re-appointed as follows :— 
Chairman—G. T. Porritt, Huddersfield. 
Convener—W. Denison Roebuck, Leeds. 
Representative on Executive and Committee of Suggestions— 
Rosse Butterfield, Keighley. 
Referees—Percy H. Grimshaw, for Diptera; C. Morley, and 
Rev. F. D. Morice, M.A., for Hymenoptera. 
Other Members—E. G. Bayford, Barnsley ; M. L. Thompson, 
Middlesbrough ;° J. W. Carter, Bradford; Ho ie 
Corbett, Doncaster: LY. Stamitorth, Tull ssh 
Drake, Scarborough ; and Prof. W. Garstang, D.Sc., 
Leeds: 
CONCHOLOGICAL SECTION. 
With the increased knowledge of molluscan distribution, 
and in a well-worked county like this, one may hardly expect 
—hbig though the area is—to announce every season the occurrence 
of new species; but the blank, thus unavoidable, need not denote 
any lack of enthusiasm amongst the workers in the Section. 
In the East Riding Mr. A. J. Moore has been able to add several 
varietal forms new to the Hull district, of well-known species, 
whilst at the opposite side of the same riding, Mr. John F. Musham 
secured a small, though interesting series of Helix nemoralis and 
H. arbustorum, including an example of the latter shewing the 
unusual aberration of var. bifasciata. 
For the West Riding the most important event was the meet- 
ing at Malham, for further investigation of the molluscan in- 
habitants of the Tarn and surrounding plateau, where many 
interesting forms, considering the altitude and environment, were 
observed, and a pleasant week-end was spent through the kind 
Naturalist, 
