PORRITT : NEUROPTERA AND TRICHOPTERA OF YORKSHIRE. 123 
Halesus digitatus. Apparently not very common.  Bishop’s 
Wood, Selby ; Castle Howard (G. C. Dennis). 
Halesus radiatus. A species very closely allied to H. digitatus, but 
ch commoner. It abounds on the ponds in the grounds at 
Crosland Hall, Huddersfield; and I found it in equal plenty 
at Castle Howard, where the specimens are rather larger and 
paler than the Huddersfield form. York (G. C. Dennis); 
Leeds (William Mansbridge). 
Halesus auricollis. Local, but abundant in its localities. I found 
it plentiful near Malham Cove on September 13th, 1890; and 
Mr. R. McLachlan records that on September 24th, 1873, he 
found it ‘in myriads all the way from Ilkley Station to Bolton 
Abbey, Wharfedale (about seven miles). By shaking a branch 
near the river the air became alive with the caddisfly, and the 
grass swarmed with it.” (E. M. M., x., p. 140.) 
Halesus guttatipennis. Until November 1895 only three 
specimens of this species had been recorded in Britain, all 
taken singly, and the precise locality of none of them being 
certain. On November gth, 1895, Mr. G. C. Dennis, of York, 
whilst fishing in the river at Pickering, observed a trichopteron 
flying in large numbers, specimens of which he afterwards 
brought to me for determination, when they proved to be this 
rarity. On Oct. 28th last (1896), I accompanied Mr. Dennis 
to the locality, and we found the species was in the utmost 
profusion—almost indeed a parallel case to that of A. auricollis 
as recorded by Mr. McLachlan on the Wharfe. Pickering is at 
present fhe locality for A. guttatipennis. (See E. M. M., 
January 1897, p. 14.) 
Drusus annulatus. Huddersfield, common; W harncliffe Woods ; 
Hayburn Wyke. 
Ecclisopteryx guttulata. Recorded as common at ‘adders: 
field by Mr. Alfred Beaumont, but I have not seen it nearer 
than Dunford Bridge (9 miles). Between Redmire and 
Aysgarth (W, Hewett). 
Cheetopteryx villosa. A late autumn species, and sibhably 
generally common if looked for. Abundant in the grounds of 
Crosland Hall, Huddersfield ; equally so at Pickering; and 
Mr. Dennis found it common at Castle Howard 
Sericostoma -personatum. This singular black-looking species 
is common on the beck at Castle Howard. It flies in the 
sunshine. 
Goera pilosa. Greenfield (S. L. Mosley) ; York. 
April 1397, 
