152 TRICHOPTERA. 



arises on either side a long filamentous process, only I be- 

 lieve in the males. 



Psychomia {Homcpxerus) derelicta, M'Lachlan. At the 

 June meeting of the Entomological Society, I gave a short 

 description of this species, of which I at that time only 

 possessed females. I have since taken what I think is the 

 male of the same species, and do not at the present time feel- 

 quite sm-e that it is distinct from P. phoeopay Stephens. 

 The male of that species in Stephens's collection has lost its 

 abdomen, and the female is in such bad condition as to be' 

 scarcely recognizable. I think, however, that gracilipes of 

 Stephens (nee Curtis) is the female of the same species. 



Hydropsyclie opthalmicay Rambur. The species of the 

 genus Hydrofjsyche, as a rule, bear so great a resemblance 

 one to another, that I cannot at present satisfactorily sepa- 

 rate most of those found in this country ; so it is very inte- 

 resting to find a new British species presenting such good 

 distinctive characters as the present. The following is a 

 short description. 



Antennae whitish, annulated with grey ; palpi whitish ; 

 eyes very large, intensely black; the vertex clothed with 

 hoary pubescence, almost quadrangular, slightly longer than 

 broad ; thorax and abdomen brownish ; legs whitish, with a 

 faint brownish tinge ; anterior wings very pale whitish grey, 

 thickly reticulated and spotted with dark grey, forming con- 

 spicuous oblique streaks on the inner margin and on the 

 costa towards the apex, on the apical margin are several 

 rather large spots of the pale ground colour; hind wings pale 

 grey. (I reserve a description of the anal appendices till I 

 shall have become better acquainted with the minute diffe- 

 rences that exist in these parts.) 



Exp. alar. 10 lin. 



The large eyes of the male of this species (which Dr. 



