the Hi/droj)tilidai. 149 
ciliated with gray, and pointed with snow-white ; posterior 
wings with gray hairs and ciHa. Male." 
" Length to tip of wing 3 mm. ; expansion 5\ mm." 
" Hab. — St. Lawrence River, Canada (Osten Sacken). 
Is this the sex of the preceding species ? " [After Hagen,] 
[The " preceding species " is Phrixocoma alhicorids, 
Hag., and therefore the question may be answered in the 
negative, the difference in the spurring of the legs pre- 
cluding their identity. When Dr. Hagen wrote, it was 
not known that both sexes throughout a genus of the 
Hydroptilid(B have the spurs alike in number, specimens 
with 0, 2, 4 spurs being hitherto considered to be the 
males of specimens Avith 0, 3, 4 spurs if both were caught 
in the same locality.] 
Hydroptila jnimiUo, Zet. 1840. 
" Tota fusca, pedibus flavo-testaceis ; alis omnibus 
cinereis subpubescentibus, margine distincte ciliatis, 
superioribus nervorum longitudinalium duobus versus 
marginem interiorum breviter furcatis. $ long. | exp. 
vix 2 lin." . . ^ 
" Habitat in Lapponia Umensi, ad Lycksele et Asele 
26 J id.— 17 Aug." 
" $ Antennje longitudo corporis fuscae vix annulatfe sed 
basi paullo dilutiores. Alarinii ftirc^ apicales ad marginem 
interiorem dute, ramis brevibus furcatfe. Tibias posticas 
perspicue ciliatte." [After Zetterstedt.] 
[Dr. Hagen, in his " Phryganidarum Synopsis Synony- 
mica," refers this species to the genus Agraylea. I am 
inclined, however, to suspect it may be related to Phrixo- 
coma. The small size of the insect, and the remarked 
shortness of the apical forks, seem to exclude it from the 
first mentioned genus, though the number of forks stated 
by Zetterstedt prevents its being classed with Phrixo- 
coma.^ 
TRANS. ENT. SOC. 1873. — PART II. (MAY.) M 
