SYNOPSIS OF THE BRITISH PHRYGANIDvE. 65 



and feelings of the investigator perhaps made him stumble in 

 some details. My wishes are fulfilled if, by the following 

 essay, British naturalists should feel themselves impelled to 

 take up and follow the course so brilliantly opened by 

 Leach. 



N.B. — The measurements given are average measure- 

 ments, as the animals sometimes vary considerably in size. 



Phryganid^:, Latreille, 1803. 

 Trichoptera, Kirby, 1813 ; Stephens, Curtis, Westwood. 

 Wings 4, arranged like a roof; the longitudinal veins 

 united by but few transverse veins ; prothorax very short ; 

 antennas with numerous joints, long and thin ; oral organs 

 rudimentary, only the palpi developed ; maxillary palpi five- 

 jointed, or less ; labial palpi three-jointed ; legs long and thin ; 

 tibiae furnished with movable spurs ; tarsi five-jointed. 



Division I. Heteropalpi, Kolenati. 

 Maxillary palpi of the females with five, of the males with 

 fewer joints. 



Sub-Family 1. Phryganides. 

 Maxillary palpi of the males four-jointed ; ocelli present ; 

 2, 4, 4 spurs; antennas as long as the wings. 



Genus Phryganea, Linne, Stephens. 



Wings hairy, the anterior with an elliptical apex ; palpi 

 short, broad, sparingly and shortly hairy ; tibiae spinose. 



Coloration a monotonous grey, spotted with brown or 

 black ; this genus includes the largest indigenous species. 



The larval case consists of quadrangular fragments of leaves, 



1859. f 



