British Species of Caddis-flies. 39 
apical side of the anastomosis, forming one or two detached spots 
on the inner side; veins pale fuscous, costal and apical edges and 
anastomosis dark fuscous; long black hairs on the cubital veins. 
Posterior wings hyaline, the apex yellowish. Legs testaceous, 
with black spines. Abdomen piceous. In the male the upper 
margin of the last abdominal segment is truncated; app. sup. 
yellow, large, broadly and obtusely boat-shaped ; app. intermed. 
very short, the apices hooked and black ; app. inf. short and broad, 
truncated. — 
Expanse of fore-wings 13—15 lines. 
This species was discovered in some abundance by Mr. Winter, 
in the Fens of Norfolk and Suffolk, appearing in May and con- 
tinuing for some months. I possess single examples from 
Killarney and Enniskillen in Ireland, and there was also an old 
specimen in Curtis’ Collection. 
10. Limnephilus politus, M‘Lachlan. (PI. IX. fig. 24, app.) 
Goniotaulius concentricus, Kol. Gen, et Spec. Trichop. pt. 1, p. 
55, 10 (1848), not of Zett. (1840) ; Stenophylax concentricus, 
Hag. (*) Stett. Zeit. 1859, p. 133; M‘Lach. Trans. Ent. 
Soc. 3rd ser. 1. 240; Limnophilus vibex, Brauer, Neurop. 
Aust. p. 51 (1857) ?, not of Curt. (1834). 
Antenne reddish-testaceous, with faintly darker annulations. 
Head fuscous. Palpi reddish-testaceous. Prothorax clothed 
with yellow hairs. Mesothorax dark brown. Anterior wings 
rather broad, pale shining greyish-yellow, the dorsal and apical 
portions spotted with grey or greyish-fuscous (varying in different 
individuals) ; a conspicuous fuscous line (being in reality a lon- 
gitudinal vein) near the dorsal margin. Posterior wings hyaline, 
yellowish atthe apex. Legs ochreous, with black spines. Abdo- 
men greyish-fuscous, the terminal segment somewhat testaceous. 
In the male the upper margin of the last segment is produced in 
the middle into a short rounded lobe, the margin of which is 
rolled under, scabrous and black ; app. sup. large, broad, spoon- 
shaped, the greater part of them concealed under the projecting 
margin of the last segment, testaceous, internally furnished with a 
transverse row of small black teeth, placed at about the middle ; 
app. inf. broad, straight, acute and divergent, blackish, only visible 
from below ; app. inf. rather long, obtuse, testaceous, with black- 
ish hairs at the tips ; penis-sheaths long, suddenly inturned at the 
tips; penis thin, much exserted, shining brown, issuing from a 
short tubular piece with truncated margins. 
