the Hydroptilid(£. 145 
slender fascia before the middle wliicli expands in both 
fringes and is preceded by some indistinct clouds on the 
disk ; this is followed by a large triangular blotch extend- 
ing from the costal fringes almost across the wing and 
subtended by a ^^ale dash in the terminal fringes ; this is 
followed by a small spot on the costa subtended by a 
larger one on the terminal margin, both entering the 
fringes; after these come the extreme tip, and a small 
spot just before it in the terminal fringes ; posterior 
wings gray, with concolorous fringes. Legs testaceous, 
with glossy hair. Abdomen pale greenish, with two dorsal 
rows of pedunculated black spots; appendices superiores 
stout, claw-shaped, with the points turned inwards; two 
little tubercles on each side of the penis may represent 
sheaths. 
In the female the basal clouds on the anterior wing are 
less distinct; the fascia is interrupted; and an oblong 
blotch on the costa subtended by a spot on the disk, takes 
the place of the triangular blotch. Antennae a quarter as 
long as the wings. 
Length with closed wings $ 3 — 3*5, $ 4 mm. 
Hah. — Ponds in Woburn and Battlesden Parks, Bed- 
fordshire, which are infested with Polygonum amphibium. 
May, June, July. It occurs also in Scotland, and the 
Departement de I'Aube, near Bar-sur- Seine (M'Lachlan's 
collection); also at the end of May at Konigsburg (Hag. 
in letter to M'Lach.), and in Brabant. 
Oxyeth ira a lb icep s . 
Hydroptila albiceps, M'Lach. 1862. 
Head and prothorax whitish-yellow, frons with some 
blackish hairs; palpi grayish-testaceous; antennae pale 
testaceous, with the tip dark gray ; anterior wings grayish- 
fuscous; the inner margin towards the base, and a very 
indistinct fascia before the middle which expands in the 
fringes of the inner margin and is extended along it for a 
little distance as a narrow streak which lies partly in the 
fringes and partly in the contiguous portion of the disk 
where it is interrupted by a dark spot on the longitudinal 
fold, paler; there are also a pair of opposite spots and 
some discal streaks in the terminal region of the wing, 
and also a transverse blotch forming a fascia immediately 
before the dark apex of the wing, paler. Posterior wings 
