British Species of Caddis-jties. 27 
at the base of the third. Legs testaceous, more reddish be- 
neath. Abdomen greyish-fuscous. In the male the upper margin 
of the last abdominal segment is rounded; app. sup. broad, 
emarginate almost to the base, the forks widely diverging, testa- 
ceous; app. intermed. broad, straight, rather longer than the 
app. sup., obtuse, black ; app. inf. small, slightly curved, yellow, 
hairy. In the female the superior valves are broadly rounded, 
the lateral valves longer and very acute. 
Expanse of fore-wings 18-—19 lin. 
Not a common species; frequenting the same localities as the 
last, and at the same time. 
The only other European species pertaining to Grammotaulius 
is Phryganea interrogationis of Zetterstedt, which may be merely 
a strongly marked variety of G. atomarius. 
Genus Limnepuitus, Leach. 
Antennze moderately stout, about as long as the wings; basal 
joint as long as the head, slightly curved, hairy. Head quadrate, 
small. Ocelli usually prominent and distinct. Eyes prominent. 
Maxillary palpi in the males long, slightly hairy, the joints thin 
and subcylindrical, basal joint short, the two others long and of 
nearly equal length and thickness; in the females with short 
basal joint, second, third and terminal joints of nearly equal 
length, long, fourth shorter and somewhat thicker. Labial 
palpi with broader joints, first and second of nearly equal 
length, terminal joint longer, subovate. Prothorax moderately 
developed, hairy. Mesothorax oval, much broader than the head, 
very convex, usually with a broad depressed median line above. 
Anterior wings long and narrow, dilated towards the apex, costa 
more or less rounded, apical margin usually obliquely truncated, 
dorsal margin gradually concave from apex to base, hairy cloth- 
ing short and slight ; neuration not very strong ; radius slightly 
bent before the termination, discoidal cell long and narrow, first 
apical cell rather longer than the three following, all the apical 
cells reaching the anastomosis (except in ZL. vittatus); usually 
with longish erect hairs on the veins bordering the cubital cells 
near the base of the wing; often with a coloured pterostigma. 
Posterior wings hyaline, very broad, somewhat shorter than the 
anterior, slightly excised below the apex; anal field very large, 
discoidal cell similar in shape to that of the anterior wings, fourth 
apical cell not so broad as the second, first apical sector in the 
male with frequently a short blackish beard in the middle be- 
neath. Legs strong; tibie and tarsi strongly spinose; anterior 
tibiae with one rather long apical spur; intermediate tibize with 
