SYNOPSIS OF THE BRITISH PHRYGANID.E. G3 



presence of nearly all the species of central Europe, and, for 

 Scotland, the Alpine species of Switzerland and Scandinavia. 

 It is very probable that even the remarkable genus Enoicyla, 

 with apterous females and the larvae living out of the water, 

 will occur in Britain. I cannot resist here calling attention 

 to a notice by Doubleday (Ent. Mag. Vol. V. p. 279), which 

 has hitherto been overlooked. The indication of Isopalpi 

 with apterous females in North America renders it not im- 

 probable that similar species will occur in Europe. 



The materials made use of by me are the following:— The 

 collection of the British Museum, and the Stephensian types 

 preserved there, have been studied by me as carefully as pos- 

 sible. The knowledge of the species is rendered difficult by 

 the circumstance that Stephens ticketed his collection, not in 

 accordance with the " Illustrations," but with the " Cata- 

 logue," and in some instances has inserted what are evidently 

 different animals. Some species are altogether wanting, or 

 could not be ascertained. The collection of Mr. Curtis I 

 was only able to look through once, notwithstanding the 

 obliging kindness of its celebrated owner. It contains much 

 that is beautiful and deserving of further examination ; the 

 species also are well separated. Mr. Newman's collection 

 furnished me with interesting details and unique specimens 

 (Apatania), as did also a small number of species collected 

 by Mr. Walker, which I received through Mr. Stainton. 

 I have obtained some extremely important results from a 

 number of types sent by Pictet to Curtis, and furnished by 

 the latter with his names. I am indebted for the permission 

 to study these carefully (the final conclusion of the investi- 

 gation, which is completed as far as the Hydropsychidce, 

 has been delayed by circumstances beyond my control), to 



