138 Rev. A. E. Eaton on 
Phrixocoma albicornis. 
Hydroptila albicornis, Hag. 1861. 
" Gray; antennce stout, snow-white, with the middle 
and apex fuscous ; pal])i whitish ; head with snow-wliite 
hair, the vertex with fuscous hair; thorax fuscous; feet 
whitish, the posterior ones cihated with white; anterior 
wings grayish-fuscous, cihated wdth gray, the margin and 
disk jjointed with snoAv-Avhite ; posterior wings gray, 
clothed and ciliated with gray hair 2 ." 
" Length to tip of wings 3^ millimetres, expanse 6 milli- 
metres." 
" Hub. — St. Lawrence River, Canada. (Osten Sackeu)." 
[After Hagen.] 
Genus Hydroptila. 
Hydroptila, Dalm. 1819: tyj)Q, H. tineoides. 
Imago. Antenna? short, stout, moniliform, Avith coarse 
adpressed hair which gives to the joints a shield- shaped 
form; some of the joints before the middle cylindrical; 
the basal joint rather longer and thicker than the others. 
Head and prothorax Avith long coarse hair. Ocelli pre- 
sent. INIaxillary palpi filiform, AA'ith closely adpressed 
hair, five-jointed ; the first tAvo joints very short, siib- 
equal ; the third and fourth oblong, equal to each other ; 
the fifth joint not much longer than the fourth. Labial 
palpi AA'ith joints gradually increasing in length and thick- 
ness toAA'ards the tip, the terminal joint oblong. Wings 
linear lanceolate, acuminate, Avitli A-ery long fringes ; the 
anterior scabrous, AA^thout an appendage to the post- 
costa ; the posterior aa- itli adpressed hairs. Legs of mode- 
rate length, the intermediate and posterior tibia? and the 
base of the posterior tarsus sti-ongly fringed externally ; 
anterior tibia AAath one apical spur, intermediate AA'ith one 
middle and tAA'o a])ical spurs, the posterior tibi;i3 AA'ith two 
spurs in the middle and two at the a])ex. Abdomen Avith 
conspicuous apjiendices in the male : penis setiform ; 
ventral lobe of the antepenultimate segment perhaps 
Avanting. 
I caught one specimen, a male, on board a liliine 
steamer off Johannisbei-g, in July. Having no oppor- 
tunity for describing it, I placed it in fluid. This has 
prevented me from descril)ing the neuration and 'the form 
of the posterior Avings. 
