British Species of Caddis-flies. 131 
longer than the third, and thinner. Labial palpi very small, with 
two short basal joints and a longer terminal one. Mesothorax 
robust. Anterior wings long and narrow, with an elliptical some- 
what-dilated apex; hairy clothing short, rather dense, varying 
according to the species; a naked circular space in both sexes near 
the base, at the point where the ramus discoidalis parts from the 
radius ; discoidal cell closed, short and broad; forks 2, 3, 4 and 5 
present ; two transverse veins, besides the one closing the dis- 
coidal cell, towards the apex, and two others towards the base. 
Posterior wings shorter than the anterior, considerably dilated 
before the apex, which is obliquely rounded ; discoidal cell open; 
forks 2, 3 and 5 present; fringes long. Legs long; intermediate 
tibiae and tarsi not dilated in the female; anterior tibia with two 
short apical spurs; intermediate and posterior tibia each with 
two pairs of short unequal spurs. Abdomen slender, In the male 
a short pointed lobe proceeds from the upper margin of the last 
segment; beneath this is a large horny cover of the penis, and on 
each side of this, two needle-shaped app. intermed.; app. sup. 
long, finger-shaped and hairy; app. inf. large, bisarticulate, the 
terminal joint usually cleft. In the female the apex of the abdo- 
men ends in a short and rather pointed ovipositor. 
Larva inhabiting running waters ; long and slender, with short 
feet; without external respiratory filaments. 
Case sometimes merely a silken serpentine tube on the surface 
of stones, closed with débris when the larva changes to a pupa; or 
composed of small stones, similar to that of most of the other 
genera in this family. 
The species are difficult to separate, but the appendices furnish 
the best characters. I can satisfactorily determine only three 
native species, but it is probable that we have several others. 
1. Tinodes lurida, Curtis. 
(Pl. VII. fig. 3, neuration and max. palp.; Pl. XIII. figs. 
13, 14, app.) 
Tinodes luridus, Curt. (*) Phil. Mag. p. 216, 5 (1834); Steph. (*) 
Ill. p.163,4; Hag.(*) Ent. Ann. 1861, p, 10,99; 7’. pallescens, 
Steph. (*) Ill. p. 162, 1 (1836); 7. flaviceps, Steph. (*) Ul. 
p- 162, 2 (1833); TZ. wanthoceras, Steph. (*) Ill. p. 163, 3 
(1836); T. pallipes, Steph. (*) Ill. p. 163, 5 (1836); T. 
annulicornis, Steph. (*) Ill. p. 163, 6 (1836); Hag. (*) Stett. 
Zeit. 1860, p. 283, 3; Philopotamus longipennis, Ramb. Hist. 
Nat. Névrop. p. 504, 6 (1842); Tinodes Waenerti, Kol. Gen. 
K 2 
