34 Mr. R. M‘Lachlan’s Monograph of the 
wings rather narrower than in ZL. marmoratus, hyaline, clouded 
with very pale grey, the apex dark greyish-fuscous, with nu- 
merous small pale spots; pterostigma dark fuscous, placed 
obliquely and elongate ; aati spot broad but indistinct, 
anastomosal space well marked; veins finely pointed with fus- 
cous. Posterior wings hyaline, with a very indistinct testaceous 
mark at the pterostigma; veins fuscous. Legs testaceous, with 
black spines. Abdomen dark blackish-fuscous, the first segment 
with an elongate testaceous depression in the middle above. In 
the male the upper margin of the last abdominal segment is pro- 
duced, somewhat broadly but shallowly emarginate in the middle, 
with a black protuberance on either side; app. sup. very large, 
broadly and obtusely spoon-shaped, standing out at a considerable 
angle from the body; app. intermed. thick, straight, with a some- 
what mucronate apex, testaceous at the base; app. inf. thick and 
straight, obtuse, truncated, with a long tuft of hairs at the apex. 
Expanse of fore-wings 15 lines. 
I have seen but a single British example of this insect, which 
was captured in September, 1862, at Ruislip reservoir, Middlesex, 
by Mr. Wormald, and is now in his collection. 
6. Limnephilus marmoratus, Curtis. (Pl. 1X. figs. 17, 18, app.> 
Limnephilus marmoratus, Curt. (*) Phil. Mag. p. 123, 8 (1834) ; 
Steph. (*) Ill. p. 214, 17; Limnophilus marmoratus, Hag. (*) 
Ent. Ann. 1859, p. 77, 13; Limnephilus binotatus, Curt. (*) 
Phil. Mag. p. 122, 5 (1834); Steph. (*) Ill. p. 215, 8; Z. 
discoidalis, Curt. (*) Phil. Mag. p. 122, 6 (1834) ; Steph. @) 
Ill. p. 214, 5; Limnephila vitrea, Ramb. Hist. Nat. Névrop. 
p. 482, 19 (1842). 
Antenne reddish-testaceous, with very faint darker annula- 
tions. Head reddish, fuscous in the centre, sometimes entirely 
fuscous. Palpi reddish-testaceous. Prothorax reddish, with pale 
hairs. Mesothorax fuscous, reddish at the shoulders, and usually 
with two impressed reddish lines in the centre, meeting poste- 
riorly. Anterior wings very pale straw-colour, nearly hyaline, 
the dorsal half of the wing with strong brown markings; an 
oblique brown blotch is placed on either side of the fenestrated 
spot, a large blotch at the anal angle and another in the apex ; 
pterostigma with a somewhat elongated brown spot; these mark- 
ings are generally irrorated with small spots of the pale ground 
colour, and are sometimes all confluent, in which case the dorsal 
half of the wing is almost entirely brown, the two usual pale spots 
excepted ; in other examples the dark spots, and even the dark 
