142 Mr. R. M‘Lachlan’s Monograph of the 
2. Wormaldia subnigra, M‘Lachlan. 
(Pl. XIII. figs. 24, 25, app.) 
Philopotamus columbina, Hag. (*) Stett. Zeit. 1860, p. 279. 
Antenne brown, annulated with yellow. Head black, with 
yellowish hairs. Palpi blackish-fuscous. Mesothorax blackish- 
fuscous. Anterior wings dark brownish-black, with long blackish 
hairs on the basal veins, Posterior wings dark smoky-grey, sub- 
hyaline. Legs dark brownish-testaceous. Abdomen dull black. 
In the male the upper margin of the last abdominal segment is 
deeply notched in the middle ; app. inf. with the basal joint fus- 
cous, the apical joint somewhat testaceous, rather more acute at the 
tips than in the last species. The ovipositor of the female is 
fuscous at the base, testaceous at the apex. 
Expanse of fore-wings 53—6 lines. 
Has been taken by Mr. Wormald in North Wales in the autumn, 
and by Mr. Parfitt and myself in Devonshire at the end of 
summer. 
May be separated from the last species by its generally darker 
colour, and especially by the notch in the upper margin of the last 
abdominal segment in the male. 
Dr. Hagen informs me that columbina of Pictet is a small true 
Philopotamus. 
Genus Prirctrocnemia, Stephens. 
Antenne rather stout, placed close together at their bases ; 
basal joint rather stouter and longer than the others. Head 
hairy, nearly quadrate. Ocelli wanting. Maxillary palpi very 
Jong; two basal joints very short and stouter than the others ; 
third long; fourth rather shorter; fifth as long as the others 
united, very slender. Labial palpi small, with a long terminal 
joint. Prothorax distinct. Mesothorax short and robust. An- 
terior wings narrow at the base, much dilated before the elliptical 
apex ; hairy clothing short and rather dense; a transverse vein 
unites the costa and subcosta near the middle; discoidal cell 
closed, long and narrow, its upper edge united to the radius by an 
oblique transverse vein; forks 1, 2, 3, 4 and 5 all present, fork 1] 
very short; two transverse veins towards the apex below the dis- 
coidal cell, another in the middle of the wing, and perhaps others 
near the base. Posterior wings folded, broader than the anterior, 
anal portion well developed, the apex broadly rounded ; discoidal 
cell short, closed, united to the radius by a transverse vein, and 
with two others below it; forks 1, 2 and 5 present; fringes short. 
