Hydroptilide belonging to the Ewropean fauna. 77 
there is usually visible the down-turned black apex. Inferior 
appendages, seen from the side, are large, elongate, obtuse, almost 
semitransparent at apex, which is slightly curved inwards and 
downwards; very hairy externally and their upper and lower 
margins regularly beset with short hairs. There are also two sub- 
parallel ventral processes, between which the black apex of the 
lower penis-cover usually lies. Ventral lobe large and long, 
minutely serrate on its margins. Expanse about 6 mm. 
Grand Canary, 9th and 11th December, 5 males (Rev. 
A. E. Eaton). Several mutilated specimens, including 
a female, from the same locality, doubtless belong to the 
same species. Thirteen examples from Teneriffe, 15th 
Dec. and 25th Dec., also appear to be identical, and I 
can detect no appreciable differences in a single male 
from Madeira, 20th November ; all collected by Eaton. 
A very distinct species, easily to be distinguished on 
account of the large inferior appendages and the apex 
of the penis. The broad inferior appendages are some- 
times turned in, and lying close to the dorsal plate con- 
ceal the inner parts. The density of the hair is also a 
difficulty, on account of which figure 2 is not quite 
satisfactory. 
Puate V., fig. 1, apex of abdomen of male, from beneath ; 2, from 
side (in outline) ; 3, penis; 4, apex of ditto (more enlarged). 
Hydroptila uncinata, n. sp. 
Antennz about 31-jointed in the male (mutilated ?), fuscous. 
Vertex densely clothed with white hairs, hairs in front darker. 
Palpi yellowish white. Legs dingy testaceous. Anterior wings 
dark brown or blackish, with white markings arranged in the 
usual way. Posterior wings greyish, iridescent, with concolorous 
fringes on the inner margin; costal fringes darker. In the male 
there is a large semitransparent dorsal plate, with incurved edges, 
slightly produced at apex; outer angles bearing a long down- 
turned incurved hook. The penis is slender, scarcely dilated 
towards the apex, where it is twisted. Lower penis-cover bearing 
some analogy to that of H. fortwnata, but apparently broader at 
apex. Inferior appendages large and elongate, their apices obtuse, 
semitransparent and concave, outwardly hairy, and their margins 
regularly beset with short hairs. Ventral processes as in H. for- 
tunata. Ventral lobe large and long. Expanse about 54 mm. 
Italy (Apennino Pistojese, 26th July (2), and 5th 
August (1)), three males (Maton). 
