116 PORRITT : NEUROPTERA AND TRICHOPTERA OF YORKSH 
7Eschna cyanea. York (Rev. W. C. Hey) ; Thorne. 
the preceding species are so nearly alike, it is impossi 
distinguish them unless captured. One or other, or both ¢ 
them, probably occur all over the county, but still very rare 
in some parts of the south West Riding. Huddersfield, 
Wharncliffe Rocks (plentiful on the small ponds near the he 
are localitiés where I have seen them. : 
feschna grandis. = (W. C. sey 
Parkin says it used to be common near Haw Park, W; 
Calopteryx splendens. Also abundant at Castle Howard, 
ms to be almost confined to the open river, whereas its 
relative C. virgo prefers the waters shaded by hedges and wo 
Mr. G. C. Dennis has taken it at Newton-on-Ouse, near York 
Lestes sponsa. Common at Thorne; and on Strensall Co 
York. 
Ischnura elegans. Probably on dimable old ponds and riv 
all parts of the — sii Castle Howard ; Hudders 
Agrion cyathiger very pretty and common § 
Huddersfield ; oii Askern; Barnsley (J. Harms 
Castle Howar : 
Agrion pulchellum. Castle Howard (G. C. Dennis); 
Sandburn 
Agrion pue te punt Bishop’s Wood, Selby; 
Askham Bog, York ; Castle Howard. 
Pyrrhosoma minium. Abundant. ‘Thorne; Bishop's 
Selby; Wharncliffe Craggs ; Doncaster. 
PERLIDA: | 
Dictyopteryx microcephala. Sent to me from Bolton: 
near Ilkley, by Mr. J. W. Carter. 
Perla cephalotes. I took this insect at the Tin Brigg 
Falls, near Skipton, on the occasion of the Union's &x© 
there, June 20th, 1891 ; Mr. Wm. Hewett found it ina 
between Redmire and Aysgarth, on May 2rst, 1893; 4 
specimens labelled ‘ Pickering,’ also from Mr. Hewett. 
Chloroperla grammatica. Probably common ¢v& 
Huddersfield ; Dunford Bridge ; Grassington ; Barnard) 
Aysgarth. 
