British Species of Caddis-flies. 33 
intermed. straight, nearly as long as the app. sup., fuscous; app. 
inf. short, with a tuft of fuscous hairs at the apex; penis short, 
obtuse, testaceous. In the female there is a short triangle from 
the upper margin of the last segment; superior valves very broad 
at the base, but produced into long slender hairy points. 
Expanse of fore-wings 12—16 lines. 
Larva greenish-yellow, with a very fine dark line down each side. 
Head dark testaceous, with a Y-shaped spot in the middle, and two 
broad curved streaks meeting behind, fuscous ; there are also some 
minute fuscous irrorations on the side of the head. Pronotum 
dark testaceous, the upper edge broadly margined with fuscous, 
the lower margin with a tridentate fuscous band. Mesonotum 
altogether fuscous above. Metanotum with scattered fuscous 
spots. Legs testaceous, externally marked with fuscous. Anal 
segments with a few black hairs. Anal hooks slightly marked 
with fuscous externally. 
Case varying greatly, according to the circumstances under 
which the larva is placed, and, as it would appear, according to 
the caprice of the inmate. Thus, it is formed sometimes entirely 
of pieces of grass-stems or rushes, cut in equal lengths and arranged 
side by side transversely (when vegetable matters are used they 
are always arranged in this manner); sometimes wholly of small 
stones ; sometimes of shells of various fresh-water mollusca; or of 
all these substances mixed heterogeneously. Some cases are 
formed half of one substance, pieces of grass for instance, and 
the other half entirely of shells. I possess a case (PI. III. fig. 25) 
that I have little doubt belongs to this species, which is made of 
the minute shells of Valvata cristata, arranged in mosaic, to the 
number of from 150 to 200, and with a few seeds of some water 
plant placed in the middle, probably to strengthen it. 
This is a very common and generally-distributed species, ap- 
pearing in summer and autumn up to October. Specimens in my 
collection from Germany are much more strongly marked than is 
usual in native examples. 
5. Limnephilus nobilis, Kolenati. (PJ. IX. fig. 16, app.) 
Chetotaulius nobilis, Kol. Gen. et Spec. Trichop. pt. 1, p. 43, 3 
(1848); Limnephilus nobilis, M‘Lach. Ent. Ann. 1864, p. 
147. 
Antenne testaceous, with slightly paler rings. Head greenish- 
grey. Palpi testaceous. Prothorax testaceous, clothed with | 
pale yellow silky hairs. Mesothorax greenish-grey. Anterior 
VOL. V. THIRD SERIES, PART 1.—ocT, 1865, D 
