23

British Species of Caddis flies.

b. Anterior wings not distinctly granulated,elongate.

1. A dark line in apex of pos-

terior wings, apex pointed . Grammolaulius.

2. No dark line; apex not

pointed.

* Apex of anteriorwings more or less

truncated . . . Colpotaulius and

Limnephilus.

** Apex of anteriorwings parabolic or

rounded .... Anabolia and Ste-nophylax.

B. Spurs 1-3-3. Halesus.

C. Spurs 1-2-3. Ecclisopteryx.

D. Spurs 1-2-4. Apatania.

E. Spurs 0-3-3 ( $ ); 1-3-3 (?). Chcetopteryx.

Genus Colpotaulius, Kolenati .

Antennas moderately stout, tapering, basal joint about the lengthol the head, very slightly curved. Head nearly quadrate. Max-illary palpi of the male with short basal joint, second joint long,third somewhat shorter than the second and slightly compressed ;ot the female, with short basal joint, second third and terminaljoints of nearly equal length, fourth shorter. Labial palpi withbroad and compressed basal joint, second joint narrower, terminaljoint oval, slightly longer than the others. Prothorax moderatelydeveloped, very hairy. Anterior wings narrow, hairy coveringrather dense, apical cilia evident; costal margin much rounded,apical margin obliquely truncated, dorsal margin nearly straight,neuration strongly marked, radius with a scarcely perceptiblebend before its termination, pterostigma never marked, apicalcells all reaching the anastomosis. Posterior wings very deeplyexcised just below the rounded apex, hyaline, cilia evident. An-terior tibiae with few spines and one moderately long apical spur ;intermediate tibiae strongly spinose, one long spur in the middleand two at the apex, of which the inner is the longest; posteriortibiae also strongly spinose, with two long median and two apicalspurs, the inner the longest in both pairs.

Larva unknown.

I'his genus, first formed by Kolenati in the first part of his“ Genera et Species Trichopterorum,” has been adopted by Brauer,