32 Mr. R. M‘Lachlan’s Monograph of the 
straight, broad, tapering, black, testaceous at the extreme base 
app. inf. long, almost cylindrical, testaceous, curved slightly 
upwards and inwards. 
Expanse of fore-wings 14 lin. 
The single known specimen is a male in the British Museum, 
supposed to have come from Dr. Leach’s Collection. There is 
nothing in the appearance of the insect against the supposition 
that it is a native of this country, yet it must be considered rather 
doubtful until the nativity be confirmed by more examples. 
4. Limnephilus flavicornis, Fabricius, 
(PI. II. figs. 24, 25, 26, case; PI. III. fig. 5, neuration; Pl. IX. 
fig. 15, app.) 
Phryganea flavicornis, Fab. Mant. Ins. t. 1, 245, 11 (1787); 
Ent. Syst. p. 77, 12; Oliv. Encyc. Méthod. p. 541, 13; 
Pict. (*) Recherch. p. 151, 20, pl. 9, fig. 2; Limnephilus fla- 
vicornis, Steph. (*) Ill. p. 213, 3; L. dorsalis, Steph. (*) Il. 
p. 213, 4 (1837); Limnophilus flavicornis, Burm. Handb. p. 
932, 10; Brauer, Neurop. Aust. p. 50, fig. 88, 89, app.; 
Hag. (*) Ent. Ann. 1859, p. 77, 14; Limnephila flavicornis, 
Ramb. Hist. Nat. Névrop. p. 484, 23; Chetotaulius flavicornis, 
Kol. Gen. et Spec. Trichop. pt. 1, p. 44, 6. 
Antenne testaceous, with darker annulations. Head reddish. 
Palpi testaceous. Prothorax clothed with greyish-yellow hairs. 
Mesothorax fuscous, reddish at the shoulders. Anterior wings 
almost hyaline, with a faint yellowish tinge, usually most evident 
in the female, clouded and irrorated with pale gr ey; a row of fus- 
cous dots along the basal part of the dorsal margin, and also some 
fuscous dots anme the basal part of the middle; pterostigma usually 
not marked; fenestrated spot large, anastomosal space also large 
and round, these two spots only evident when the grey markings 
are numerous; veins testaceous, sometimes streaked with fuscous, 
the anastomosis usually entirely fuscous, but in some specimens 
not darker than the other veins; all the apical cells of nearly the 
same breadth, and all truncated at the base. Posterior wings 
hyaline, slightly yellowish at the apex in some females ; first apical 
sector with a short and distinct black beard in the males. Legs 
testaceous, with black spines; apices of tarsi and tibia slightly 
fuscous. Abdomen dull greenish in life, the incisions of the seg- 
ments paler. In the male the upper margin of the last abdominal 
segment is nearly straight; app. sup. large, foliaceous, the sides 
almost parallel, oblique at the apex, which is excised, internally 
about the middle there is a transverse row of blackish teeth; app. 
