British Species of Caddis-flies. 63 
8. Stenophylax radiatus, Rambur. (PI. XI. fig. 9, app.) 
Limnephila radiata, Ramb. Hist. Nat. Névrop. p. 479, 12 
(1842); Stenophylax radiatus, Hag. Stett. Zeit. 1859, p. 
136, 3; M‘Lach. Trans. Ent. Soe. ser. 3, i. 239. 
Very similar in general appearance to the preceding. In the 
male the app. sup. are decidedly bilobed, the inner lobe shorter 
than the outer and black with the margins crenulated ; this inner 
lobe appears to be joined to the base of the app. intermed. ; 
app. inf. produced into a long upwards-directed flattened piece, 
the apex of which is truncated and folded, shining black. 
Expense of fore-wings 14—18 lines. 
Apparently a very local species. I have taken it at Dawlish, 
Devon, in September, and have seen examples from other loca- 
lities. 
The different form of the app. inf. is, perhaps, the only decided 
character by which this can be separated from the preceding. 
The app. sup. are apparently different, but these parts in this 
group of Stenophylar are so greatly concealed (or retracted) 
in the last segment, that it is difficult to examine them with any 
great degree of accuracy. There seem to be several allied 
European species, which can be separated only by an examination 
of the appendices, and chiefly of the app. inf. 
9. Stenophylaax infumatus, n. sp. 
Antenne and head dull black. Palpi dark blackish-fuscous. 
Prothorax reddish-fuscous, with black hairs. Mesothorax black ; 
a deeply impressed longitudinal medial line, with a shorter im- 
pressed line on each side. Anterior wings uniformly dark smoky 
fuscous, with conspicuous blackish veins ; a white dot at the thy- 
ridium and another below it at the arculus; cubital veins with 
long black erect hairs. Posterior wings pale smoky fuscous, 
darker at the apex. Legs fuscous, with black femora; tibiz 
and tarsi with black spines. Abdomen black above, brownish 
beneath. In the male the superior margin of the last abdominal 
segment is regularly rounded and somewhat testaceous ; app. sup. 
subtriangular, testaceous, the apex slightly produced and black ; 
app. intermed. placed close together, short, broad and triangular, 
testaceous, the tips obtuse and deep black ; app. inf. arising from 
near the middle of the ventral margin, placed close together, 
curved upwards, band-shaped, long, obtuse, fuscous, the extreme 
apex black and scarcely thickened ; when viewed from below they 
