134 Rev. A. E. Eaton on 
opposite spots midway between the fascia and the apex of 
the wing, of Avhich that in the costal fringes is the most 
conspicuous, and that on the terminal margin s])aringly 
contributes to the fringes ; after these is a straight fascia 
just before the extreme tip of the wing which enters the 
fringes ; fringes purple black. Posterior wings black. 
Legs testaceous, or fawn colour, with glossy hair. Abdo- 
men greenish, with closely adpressed, silvery-gray hair; the 
appendices inferiores of the male subulate divergent ; the 
penis is exserted from a bulbous protuberance, and above 
it is extended a broad semi-campanulate membrane, 
which is emarginate in the middle ; penis sheaths acicular. 
Length with closed Avings ^ 4, $ 5 mm. 
Hah. — England ; in warm rivers. Abundant at Bur- 
ton-on-Trent and Ringwood. June and July. The 
Netherlands. 
I have stated above my doubts respecting the received 
synonymy, and my reasons for not abandoning it. 
Plirixocoma jmlcliricornis. 
PL III. fig. 2— 2 b, genitalia $. 
Hydroptila pulcliricornis, Pict. 1834. 
Head and prothorax with glossy yellowish-white hairs, 
frons with blackish hairs ; paljii whitish ; antenna) some- 
times black throughout, sometimes with the tip, a ring 
between the tip and the middle, and more or less of the 
base whitish. Anterior Avings black, with glossy yellow- 
ish-Avhite markings, which are more yellowish in the 
female than in the male, viz. : the base of the wing, a 
somewhat oblique fascia before the middle Avhich is 
enlarged in both fringes, especially in those of the inner 
margin ; this is followed by a dot in the middle of the 
disk ; after this is a conspicuous pair of opposite spots 
Avliich enter the fringes, that on the costa being triangular 
and the larger ; these spots are succeeded by two short 
longitudinal rows of pale hairs on the disk ; and these arc 
followed by a straight fascia just before the extreme tip 
Avliich sparingly contributes to both costal and terminal 
fringes ; fringes Avith a purplish gloss. Posterior Avings 
black, Avith purple-black fi'inges. Legs pale testaceous, 
with glossy hair, the femora rather darker. Abdomen 
greenish, Avith closely ad]n-essed, glistening hair, the dorsal 
spots rather indistinct and more linear than usual. Ap]icn- 
dices superiorcs Avith Avidc bases, compressed, blade-like, 
Avith then* very acute points curved upwards, slightly diver- 
