PORRITT : NEUROPTERA AND TRICHOPTERA OF YORKSHIRE. 125 
Hydropsyche instabilis. On the stream at Grimescar, Hudders- 
field, and no doubt generally common in the county. 
Hydropsyche angustipennis. Abounds at ‘Sheard’s Dam,’ 
Huddersfield, and is in smaller numbers on other old reservoirs 
in the same district. 
Diplectroma felix. Scarborough (R. McLachlan). 
Philopotamus montanus. I found this pretty and lively sun- 
loving species on a clear running stream at Diggle, where it was 
apparently fairly common, on August 4th, 1892, the only 
occasion on which I was ever on that precise spot. 
Wormaldia occipitalis. Common on the stream in Penny- 
spring Wood, Huddersfield. 
Wormaldia subnigra. Scarborough (R. McLachlan). 
Plectrocnemia conspersa. Abundant. Huddersfield ; Dunford 
Bridge ; Castle Howard. 
Polycentropus flavomaculatus. Abundant at Castle Howard ; 
Grassington. 
Holocentropus dubius. York. 
Holocentropus picicornis. Huddersfield, and no doubt else- 
where. 
Cyrnus trimaculatus. Huddersfield ; Greenfield ; Castle Howard. 
Tinodes weeneri. In profusion on Scalby Beck, Scarborough ; 
Castle Howard. 
Tinodes dives. The only occasion on which I have met with 
this local species was at the Union’s Excursion to Grassington 
on June 13th, 1891; it is probably not uncommon there. 
Rhyacophila dorsalis. Abundant. Huddersfield; Wharncliffe 
Woods ; Castle Howard ; Scarborough. 
Rhyacophila obliterata, Scarborough (R. McLachlan). 
Agapetus fuscipes. I have a note that I took this insect at 
Malham, but do not seem to have any of the specimens. 
SUMMARY. 
British. Yorkshire- 
Pseudo-Neuroptera (excluding Psocidze and Ephemeride) 70 “a 29 
Planipennia ... oe es oe oe =i ce ee sds 30 
Trichoptera ... Ups ae a5 ee a2 ae Ge as 79 
> 138 
As will be seen from the foregoing, not half the oe British: 
Species are yet recorded as occurring in our county, and it suggests. 
at once at_once how much there is yet to be done. With our large area, 
April 1897. 
