80 Mr. Kenneth J. Morton’s notes on 
O. distinctella it differs in the absence of the bifid 
superior appendages. 
Puate VI., fig. 1, apex of abdomen, from beneath; 2, same, in 
front; 3, same, from side; 4, hook; 5, apex of penis. 
Oxyethira distinctella, McLach.—The types of the 
species were very kindly forwarded for examination, by 
Dr. John Sahlberg, of the Helsingfors Museum. Although 
closely allied to the foregoing species, it is very distinct, 
on account of what I have called above the bifid superior 
appendages, which are shown in figure, Plate V. 
Oxyethira unidentata, McLach.—A unique species, be- 
longing to the group of O. costalis on account of its 
having distinct inferior appendages. Mr. McLachlan 
was good enough to favour me with a sight of the types 
and I here give two figures, as none has been published. 
Puate V., fig. 1, apex of abdomen from beneath (the closure of 
the anal cavity above is not shown) ; fig. 2, same, from side. 
The species which follow seem to differ from the fore- 
going in wanting definite inferior appendages. They 
are characterized by having black spines on the lower 
angle of the dorsal section of the last segment. 
Oxyethira spinosella. McLach.—I am also indebted 
to Mr. McLachlan for having let me see the types 
of this species, and I give a few figures taken therefrom. 
Puate V., fig. 1, apex of abdomen from side, obliquely ; 2, same, 
from above ; 3, ventral plate and penis; 4, 5 and 6, various aspects 
of penis. 
Oxyethira falcata, n. sp. 
Antenne 87-jointed in the male, usually fuscous (apparently 
with pallid tip), but sometimes paler; clothing of head yellowish 
white on vertex, black in front; legs dingy testaceous, the femora 
sometimes fuscescent, and the tarsi indistinctly annulated with 
darker. Anterior wings brown, with white or yellowish markings ; 
fringes very dark, save where the paler markings intersect them. 
In the male the last dorsal segment has the lower angles inturned, 
and these angles bear two (or three) short blackish spines. The 
penis varies much in appearance according to the aspect from 
which it is viewed; it is dilated asymmetrically, one side being 
produced into a kind of tusk, the margin of the other side being 
angulated. The inner anal parts are complicated, but a pair of 
ear-shaped appendages are usually visible, if a strong reflected 
