162 Mr. R. M‘Lachlan’s Monograph of the 
Not a common species, appearing in May ; found near Exeter 
and in other localities. 
2. Glossosoma fimbriatum, Stephens. 
(Pl. VIII. fig. 7, neuration; Pl. XIV. figs. 11, 12, app.) 
Glossosoma fimbriata, Steph. (*) Ill. p. 161, 2, pl. 32, fig. 1 
(1836); Brauer, Neurop. Aust. p. 37; Kol. Gen. et Spec. 
Trichop. pt. 2, p. 199, 1, pl. 1, fig. 7; Hag. (*) Ent. Ann. 
1860, p. 82, 82; Tinodes obscurus, Steph. (*) Ill. p. 164, 8 
(1836); Khyacophila decolorata, Pict. Recherch. p. 191, 16, 
pl. 16, fig. 13 (1834) ? 
Almost entirely similar to the last, but smaller; the antennz 
paler and more distinctly annulated; the wings with few traces 
of the golden spots; anal appendages and ventral lobes appa- 
rently precisely similar. 
Expanse of fore-wings 6—8 lines. 
Common in autumn about streams, especially in hilly districts. 
I have a strong opinion that this is only a variety of G. Boltoni, 
perhaps an autumnal brood of that species. It is apparently 
much more common than Boltoni, but I have had no opportunity 
of collecting in suitable localities at the time when the latter should 
occur. 
According to a type sent by Prof. Pictet to Dr. Hagen, Rhyaco- 
phila decolorata of the former author is a small species of Glosso- 
soma, and perhaps identical with this. 
The words “ head ochreous,” in Stephens’ description, are not 
borne out by his types; this part being dark brown, concolorous 
with the mesothorax. 
Genus Acaretus, Curtis. 
Antenne rather stout, shorter than the wings; the basal joint 
short, thicker than the others. Head witha thick tuft of hairs on 
the vertex. ‘Ocelli present. Maxillary palpi with two short and 
thick basal joints; third joint longest, rather thinner than the two 
basal ones; terminal joint thinner than any of the others. Labial 
palpi very small. Mesothorax stout. Anterior wings densely 
clothed with hair, with long fringes; narrow at the base, dilated 
before the rounded apex; neuration moderately strong; radius 
nearly straight; discoidal cell closed, short and rather broad ; a 
transverse vein connects the lower edge of the discoidal cell with 
the upper branch of the superior branch of the ramus thyrifer, 
and another connects the two branches of this vein; there are 
also two transverse veins near the base of the wing; three forks 
below the apex. Posterior wings small with very long fringes ; 
