British Species of Caddis-flies. 45 
(1837); L. signatus, Steph. (*) Ill. p. 219, 19, part (1837) ; 
Limnephila guttata, Ramb. Hist. Nat. Névrop, p. 485, 25 
(1842); Goniotaulius fenestratus, Kol. Gen. et Spec. Trichop. 
pt. 1, p. 52, 6 (1848). 
Antenne fuscous, with slightly paler annulations. Head black. 
Palpi testaceous. Prothorax fuscous, sometimes reddish, Meso- 
thorax black, with two more or less distinct reddish median lines 
above. Anterior wings of the male shining greyish-ochreous, 
rather thickly clothed with short dusky pubescence ; pterostigma 
pale brown; fenestrated spot very indistinct, formed of two 
smaller spots; anastomosal space only visible as several scarcely 
evident pale spots at the base of the cells; a distinct pale spot at 
the thyridium; veins yellowish, many of them with blackish hairs 
placed at regular intervals. In the female the anterior wings are 
more tinged with brown, especially towards the apex ; the ptero- 
stigma less distinct, the fenestrated spot and anastomosal space 
both larger and much more distinct, and the part of the wing be- 
tween these spots is usually darker. Posterior wings hyaline, grey- 
ish at the apex, and with a pale greyish pterostigma most evident in 
the male. Legs testaceous with black spines, the terminal tarsal 
joints darker. Abdomen fuscous above, paler beneath, and with 
pale lateral lines. In the male the upper margin of the last ab- 
dominal segment is broadly produced; app. sup. finger-shaped, 
testaceous, curved upwards, the tips curved slightly downwards 
and fringed with long hairs ; app. intermed. short, curved down- 
wards, concealed in the cavity of the last segment ; app. inf. fur- 
cate, the upper branch longest, blackish at the apex, the lower 
branch bent inwards, and also blackish at the apex. In the 
female there is a long triangular projection from the upper mar- 
gin of the last segment, very acute at the apex; this lies closely 
upon a cylindrical tubular piece, the apex of which is blackish and 
obsoletely toothed. 
Expanse of fore-wings 8—9 lines. 
Larva remarkable for its very small head and thorax. Head 
and pronotum black. Mesonotum with a scaly plate of the same 
colour. Metanotum with five scaly points. Abdomen fawn- 
coloured. Feet slender, blackish. (Pictet.) 
Case almost cylindrical, composed of fragments of dead leaves 
eut into equal-sized pieces and joined together at the edges. 
When the Jarva is about to change it closes the ends with stones. 
(Pictet.) 
A common species in summer and autumn, probably frequent- 
ing both standing and running waters. 
