British Species of Caddis-flies. 73 
Kolenati, is perhaps distinct, differing in the form of the app. inf. 
C. irregularis, Kolenati, is not sufficiently known, 
I think the number of rows of dots in the apical cells is not 
a character of much value, as I have found it to vary consider- 
ably in the same individual. 
Genus Apatania, Kolenati, 
Antenne slender, basal joint not so long as the head. Head 
transversely quadrate, hairy. Maxillary palpi in the male with 
rather short basal joint, two succeeding joints longer, of nearly 
equal length, cylindrical, terminal joint obtuse; in the female the 
basal joint is short, second, third and fifth long, nearly equal, the 
second joint obconical, the fourth much shorter. Labial palpi 
with the first and second joints nearly equal, terminal joint longer, 
somewhat club-shaped. Prothorax very small and narrow, slightly 
hairy. Mesothorax broader than the head, broadly ovate, with 
few scattered hairs. Anterior wings narrow, thickly clothed with 
short hairs and with rather long marginal cilia; costal and dorsal 
margins nearly straight, apex acutely rounded; neuration strong, 
radius without a sharp bend, a transverse vein unites the radius 
to the costa at the termination of the subcostal nervure ; discoidal 
cell long and very narrow, most of the apical cells narrow, the 
fifth scarcely reaching the anastomosis, very acute, the transverse 
veins forming the lower portion of the anastomosis nearly in a 
line with the upper. Posterior wings hardly broader than the 
anterior, scarcely dilated at the anal angle, subhyaline; marginal 
cilia long; discoidal cell not closed. Legs slender, tibize and tarsi 
with few spines ; anterior tibiae with one apical spur; intermediate 
tibize with two equal apical spurs ; posterior tibize with two equal 
median and two apical spurs. Abdomen moderately stout ; penis- 
sheaths broad, penis. flattened. 
Larva unknown, probably inhabiting lakes and streams. 
This genus is easily recognizable by the number of tibial 
spurs and by the hairy clothing being much more dense than in 
the other genera in this family, as well as by the neuration being 
considerably different in character. ‘The nearly straight anasto- 
mosis in the anterior wings, the open discoidal cell in the posterior 
wings, and other minor characteristics, exhibit a divergence from 
the general type of neuration in this family. The form of the 
palpi shews, however, that this is the proper place for the 
genus, 
We have at present but one recorded native species; others are 
