British Species of Caddis-fties. 55 
JSusca, Ramb. Hist. Nat. Névrop. p. 487, 29; Anabolia lurida, 
Steph. (*) Ill. p. 230, 2 (1837); A. nigricornis, Steph. (*) 
Ill. p. 232, 6 (1837); A. destituta, Hag. (*) Ent. Ann. 1859, 
p--20,°29; Kol? 
Antenne dark uniform blackish-fuscous. Head blackish-fus- 
cous, with two paler tubercles behind. Palpi brownish-testaceous. 
Prothorax rather thickly clothed with yellowish hairs. Meso- 
thorax dark chesnut-brown, blackish in the middle. Anterior 
wings uniform dull pale fuscous, with an ochreous tinge; a whitish 
spot at the thyridium; veins darker than the membrane. Poste- 
rior wings subhyaline, apical portion brownish. Legs greyish or 
brownish-testaceous, with black spines; tibize blackish at the 
apex, and there is also a blackish spot about the median spurs ; 
tarsi somewhat fuscescent. Abdomen blackish, with ochreous 
lateral lines which often disappear in dead specimens. In the 
male the upper margin of the last abdominal segment is cut off 
straight; app. sup. large, obtuse, blackish, concave, with a rather 
prominent tooth on the lower margin; app. intermed. broad, 
pointed, diverging, nearly as long as the app. sup.; app. inf. with 
a large broad base from which proceeds a small obtuse projecting 
piece. In the female the superior valves are broad, flat, de- 
pressed in the centre and almost truncated; two fine spine-like 
points proceed from the middle of the margin of the last segment, 
above the superior valves (these points, which may be termed 
app. intermed., are very liable to be broken off and are generally 
invisible in dry examples) ; the lateral valves are somewhat conical 
and obtuse. 
Expanse of fore-wings 12—15 lines. 
Larva: Head and pronotum fuscous, corneous ; mesonotum 
also corneous, fuscous, with darker and lighter clouds, and a rather 
conspicuous short black line on each side posteriorly ; metanotum 
and first abdominal segment paler fuscous; the rest of the abdo- 
men dirty-whitish; anal crotchets tipped with fuscous, with a few 
black hairs at the base; legs pale reddish-fuscous, black at the 
joints, slightly hairy. This larva is subject to very considerable 
variation ; sometimes the head and thoracic segments are prettily 
marbled with fuscous and yellowish, as figured and described by 
Pictet. 
Case composed of vegetable matters and small stones inter- 
mixed, with long pieces of twigs attached externally; these are 
often much longer than the tube and extend far beyond it pos- 
teriorly. 
