the Hydroptilida. 137 
insertion of the fringes ; in the female the arms of the W 
sometimes form detached spots, and the pale markings are 
less conspicuous than those of the other sex ; fringes with 
a purplish gloss ; posterior Avings dark gray. Legs testa- 
ceous with glossy hair ; femora and anterior tibias black 
(whence the name). Abdomen greenish, almost oliva- 
ceous ; each segment with a pair of longitudinal dorsal 
lines, between which are a pair of pedunculated round 
spots, darker ; above the penis is a membranous trowel- 
shaped lobe ; and there are two long setiform processes for 
penis sheaths. 
Length with closed wings $ and 2 3 '5 — 4 mm. 
Hab. — The Dove, at Mappleton, Derbyshire, between 
the bridge and the weir, in June. Also at Bellagio, Lago 
di Como, early in August. 
(?) Phrixocoma fuscicornis. 
PI. II. 2, neuration $ . 
Hydroptila fuscicornis ! Schn. 1845; H. \ costalis, 
Kol. 1859, ohscura idem 1848. 
Head and prothorax silvery-white, frons with some 
blackish hairs; palpi brown-black ; antennae entirely 
brown-black. Anterior Avings brown-black with silvery 
white markings, viz. : a conspicuous costal spot with a 
very ill-defined dash in the fringes of the inner margin 
opposite to it, in the place of the usual fascia, and another 
costal spot as large as the first between it and the apex of 
the wing, in the place of the usual pair of opposite spots. 
Posterior wings dark gray. Legs brown-black, the inter- 
mediate and posterior tibifB and tarsi with a slight testa- 
ceous gloss. Abdomen not preserved well enovigh to 
afford figures of appendices being taken ; anal fringes 
dark; penis exserted from a protuberance, setiform, 
thickened at the apex. Ventral process of the ante- 
penultimate segment long, club-shaped. 
Long. 2 mm. 
Hab. — Near Messina; middle of March. Case like 
yellow grains of rice. (Schn.) 
I am doubtful whether this species belongs to Phrixo- 
coma. The structure of the antennte and the number of 
the spurs correspond ; but the neuration of the wings and 
their ornamentation is different. 
