88 Mr. R. M‘Lachlan’s Monograph of the 
3. Mormonia basalis, Kolenati. 
(Pl. I. fig. 4;° Pl. V. fig. 4¢, max. palp., fig. 4f, ant.; Pl. XII. 
fig. 8, app.) 
Goéra basalis, Kol. Gen. et Spec. Trichop. pt. 1, p. 98, 1 (1848); 
Mormonia basalis, Hag. (*) Stett. Zeit. 1859, p. 150, 6; 
M‘Lach. Ent. Ann. 1863, p. 133; Goéra hirta, Burm. 
Handb. p. 924, 1. 
Antenne yellow, annulated with brown; fringed with pale grey 
in the male; basal joint dark brown, clothed with pale yellowish 
hairs. Palpi clothed with yellowish hairs. Mesothorax brown, 
thickly clothed with brown hairs, Anterior wings grey; the costal 
margin furnished with a long in-turned brown or silky fringe almost 
to the apex; fringes of the apical and dorsal margins grey. Pos- 
terior wings grey, somewhat iridescent, with grey fringes. Legs 
greyish-ochreous. Abdomen greyish-fuscous. In the male there 
is apparently no trace of either app. sup. or intermed.; app. inf. 
very long, directed upwards and converging at the tips, semi- 
cylindrical, sulcate on the inner edge; there is a boat-shaped - 
convex upper penis-cover, beneath which is the thin penis, fur- 
nished with two hooks at the tip. 
The female is paler coloured than the male and not provided 
with an in-turned costal fringe; the abdomen clothed with long 
scattered yellow hairs. 
Expanse of fore-wings 9—10 lines. 
Frequents streams and appears in summer. Has been taken 
by Mr. Parfitt near Exeter, by Mr. Newman near Leominster, 
and by myself near Hythe. 
Genus Bracuycentrus, Curtis. 
Antenne as long as the wings, thin; the basal joint thick, as 
long as the head. Head transverse, much broader than long. 
Maxillary palpi of the males apparently three-jointed, the joints 
of nearly equal length, but the middle one stouter than the others ; 
slender, curved up in front of the head, with long hairs; in the 
female the basal joint is very short, succeeding joints longer and 
cylindrical, the third the longest. Labial palpi with the second 
and terminal joints equal, the basal shorter. Prothorax indistinct. 
Mesothorax oval, channelled in the centre above. Anterior 
wings with rounded costa, the apex elliptical, much produced ;. 
hairy clothing very slight; cilia short; neuration strong and con- 
spicuous; radius deeply bent before the termination; discoidal 
cell short, broad and angular; the seventh apical sector simple in 
