48 Mr. R. M‘Lachlan’s Monograph of the 
hyaline, with the apex very pale yellowish. Legs pale ochreous, 
with black spines. Abdomen ochreous. In the male the upper 
margin of the last abdominal segment is much produced, with a 
rounded projection in the middle; app. sup. small, somewhat 
obtuse, scarcely projecting from under the last segment; app. 
intermed. diverging, broad at the base, the apices acute and some- 
what mucronate, black; app. inf. with the tips approximating and 
clothed with greyish hairs. 
Expanse of fore-wings 9—11 lines. 
Larva with the head and thorax brown. Pronotum with 
darker bands anteriorly and posteriorly ; mesonotum with two 
lateral black points; metanotum with four scaly points. Ab- 
domen fawn-coloured. (Pictet.) 
Case similar to that of Z. vittatus but shorter and less pointed. 
(Pictet.) 
A very common species, found in the same localities and at 
the same times as JZ. vittatus, to which at first sight it bears 
considerable resemblance. This is also a very variable insect 
and suffers under the same burthen of names as the last. Ex- 
amples are sometimes found in which the anterior wings are 
almost wholly fuscous (excepting a pale apical blotch), with pale 
irrorations ; these are usually from the North of England or 
Scotland. 
18. Limnephilus flavescens, Stephens. 
Limnephilus flavescens, Steph. (*) Ill. p. 223, 33 (1837), (not of 
Hagen in Ent. Ann. 1859). 
Antennz brownish, with paler annulations. Head and thorax 
reddish-brown. Palpi pale-ochreous. Anterior wings narrow, 
of a uniform very pale straw-yellow, costal edge brownish ; veins 
brownish, set with blackish hairs; these hairs are much longer 
towards the dorsal margin; a whitish spot at the thyridium, and 
another below it at the arculus. Posterior wings hyaline, faintly 
yellowish at the tips. Legs pale ochreous, with black spines. 
Abdomen greyish-fuscous, paler beneath. In the male the last 
abdominal segment is considerably produced, the upper margin 
cut off regularly ; app. sup. small, obtuse, the tips only visible 
from under the projecting upper margin; app. inf. visible only as 
a tuft of blackish hairs. 
Expanse of fore-wings 12 lines. 
The type in Stephens’ Collection is the only known example 
of this species; it is said to have been taken at Ripley, in June. 
