TRICHOPTERA. 
Ins. 201 
given in the Supplement, pt. i. A new genus and the following new 
species arc described : — 
Chilostigma, g. n., p. 187. Spurs 1.2.2 $ $ . Anterior wings tuber- 
culate, with short semi erect hairs; pterostigma very sharply defined. 
Type, C. sieholdi (Hag.), sp. n., p. 188, pi. xx., Lapland and Finland. 
New species : — 
Ilalesus antennatus^ p. 153, Switzerland, hilaris, p. 154, pi. xvi., Switzer- 
land, Ugonifei\ p. 155, pi. xvi.. South of France, meridax, p. 156, pi. xvii.» 
Switzerland, melampus, p. 158, pi. xvi., Switzerland, mcestus, p. 159, 
pi. xvi., Noric Alps. 
Drusus monticola, p. 174, pi. xix., Switzerland, Tyrol, Noric Alps, 
melanchcetes, p. 177, pi. xix., Switzerland and Tyrol. 
Psilopteryx zimmeri, p. 189, pi. xxi., Switzerland and Saxony. 
Chcetopteryx sahlbergi, p. 195, pi. xxi., Lapland, obscurata, p. 196, 
pi. xxii., Switzerland, clara, p. 197, pi. xxi., Carniola, gessneri, p. 198, 
pi. xxii., Switzerland. 
Enoecyla costce, p. 208, pi. xxiii., Naples. 
Grammataulius signatipennis {interrogationis, Kol., pt.), Suppl., p. iv. 
pi. xxxi., Finland and Lapland. 
Limnophilus exulans^ Suppl., p. vi., pi. xxxi., Iceland. 
Anabolia sororcula (soro7', McLach., pt.), Suppl., p. viii. pi. xxx., N. 
Europe. 
Sfenophylax ucenorum, Suppl., p. ix., pi. xxx., Alps of Dauphine. 
Drusus annulatus and Peltostomis sudetica. McLachlan, 1. c. Suppl., 
p. xi., indicates the possibility of these beiug only conditions of one 
species, differing locally in the spur-formula ; and remarks on the artificial 
nature of the latter character as a means of generic differentiation in 
this family. 
Sericostomatidee. 
An examination of the species of the European fauna is completed in 
McLachlan’s “ Revision and Synopsis,” pt. v., in which the family is 
divided into four sections. The following new genera and species are 
described ; — 
New genera : — 
Cerasma, p. 234. Allied to Sericostoma ; discoidal cell of hind-wings 
closed ; inferior appendages of $ notched ; head of $ produced posteriorly 
into horns. Type, C. cornuta, sp. n., p. 235, pi. xxvi., Caucasus. 
Schizojyelex, p. 235. Allied to Sericostoma and Cerasma-, head of $ 
with broad raised lobes, but not produced into horns. Type, Sericost. 
festivum, Rambur. 
(Ecismus^ p. 236. Allied to Sericostoma and Notidobia ; inferior appen- 
dages of $ entire ; anterior wings elongate. Type, (E. mucidus^ sp. n., 
p. 237, pi. XXV., Greece. 
Lithax, p. 242. Allied to Silo ; no grooves in the wings of the $ . 
Type, Silo niger, Hag. 
Selis, p. 251. Allied to Silo ; anterior wings of the $ with a long 
groove, posterior without a groove. Type, Silo auratus, Hag. 
