25

British Species of Caddis-flies.

others about equal, long ; of the female with short basal joint,fourth joint considerably shorter than the 2nd, 3rd or 5th.Labial palpi compressed, first and second joints broad, ter-minal joint oval. Prothorax moderately developed, hairy.Anterior wings long, very narrow at the base, much dilatedbefore the acute apex, dorsal margin slightly convex, hairyclothing very slight, cilia scarcely evident; neuration not verystrongly marked, radius with a marked bend before its termina-tion, no coloured pterostigma, apical veins all reaching theanastomosis. Posterior wings hyaline, with a slight excision justbelow the acute apex, a long black apical line following thecourse of the fourth apical sector. Tibiae slightly spinose; an-terior with one long apical spur; intermediate with one longmedian spur and two apical, of which the inner is the longest;posterior with two long apical and two median spurs, the inner thelongest in both pairs. Anal appendices of the male arranged asfollows :—App. sup. large, broad and furcate ; app. intermed.large, flat and straight; app. inf. fine, hairy; sheaths furcate, thepoints approximating ; penis with thickened apex. The femalehas two hairy app. sup., and between these two triangular obtuselypointed valves.

The species on which Kolenati founded this genus appear tome to bear him out in his idea, as they have a peculiar facies,altogether different from most of the species of Limtiephilus withwhich they have been generally associated, and much resembleeach other. They are large insects inhabiting marshy districts.

The blackish apical line in the posterior wings is not constant,as occasionally specimens are found (aberrantly) without any traceof it; these are generally females.

1. Grammotaulius nitidus, Muller.

(PI. IV. fig. 1, neuration ; PI. IX. figs. 7, 8, app.)

Phryganea nitida, Mull. Faun. Fridrichs. p. 65, 569 (1761);Zool. Dan. p. 145, 1673; Grammotaulius nitidus, Brauer (*)Neurop. Aust. p. 52, fig. 93, 94, app.; Limnophilus nitidusHag. (*) Ent. Ann. 1859, p. 74, 10; P. lineola, Schrk. Ins.Aust. p. 307, 613 (1781); G. lineola, Kol. Gen. et Spec.Trichop. pt. 1, p. 39, 1; Limnophilus gracilis, Burm. Handb.p. 932, 12 (1839).

Antennae pale dull yellowish. Head reddish, with short goldenyellow hairs. Palpi dull yellowish. Prothorax very thicklyclothed with long pale golden-yellow hairs. Mesothorax palereddish-brown. Anterior wings with the apex drawn out into