British Species of Caddis-flies. 37 
spot and anastomosal space are scarcely present, being indicated 
only by pale dots. The app. sup. of the male are large and yellow, 
triangular, with the apices much produced, acute, the lower 
margin blackish and obsoletely toothed; the penis-sheaths are 
very long. 
The single type of L. affinis of Stephens is a female, and though 
presenting some points of similarity to the Continental specimens, 
is yet not to be distinguished from pale varieties of /unatus, and 
I do not detect any appreciable difference from the latter in the 
appendices. I therefore await the capture of both sexes of affinis, 
before I think it prudent to consider it a British species. 
In any case the name affinis will require to be changed, as it 
has already been used by Curtis, to indicate costalis of Stephens, 
over which name it has the right of priority (see p. 43). 
8. Limnephilus stigma, Curtis. (Pl. TX. figs. 21, 22, app.) 
to) 
Limnephalus stigma, Curt. (*) Phil. Mag. p. 123, 106 (1834) ; 
Steph. (*) Ill. p. 216, 12; Limnophilus stigma, Hag. (*) 
Ent. Ann. 1859, p. 78, 15 ; Limnephila impura, Ramb. Hist. 
Nat. Névrop. p. 476, 5 (1842); L. fulva, Ramb. Hist. Nat. 
Névrop. p. 475, 4 (1842)?; Gontotaulius stigmaticus, Kol. 
Gen. et Spec. Trichop. pt. 1, p. 55, 9 (1848). 
Antenne reddish-testaceous, with faint darker annulations. 
Head reddish, paler at the sides, and with a few scattered yellowish 
hairs. Palpi testaceous. Prothorax reddish, with yellowish hairs. 
Mesothorax reddish-brown. Anterior wings rather broad, yellow 
or ochreous, thickly sprinkled with brown spots, which are very 
variable in number and most numerous on the dorsal and apical 
margins ; costal and subcostal areas always unspotted ; pterostigma 
nearly round, piceous ; fenestrated spot small, oblique, indistinct ; 
anastomosal space large, sometimes well marked ; a small whitish- 
hyaline spot at the thyridium and another below it; veins tes- 
taceous, closely set with short black hairs placed at regular 
intervals, visible under a strong magnifying power. Posterior 
wings subhyaline, yellowish at the apex, and sometimes with the 
apical veins clouded with grey; the male with a small dark brown- 
ish beard on the first apical sector below. Legs pale testaceous, 
with black spines. Abdomen dull greyish-fuscous or greenish- 
fuscous, evidently green in life. In the male the upper margin of 
the last abdominal segment is produced in the middle into a long 
tongue-shaped flap, the apex of which is bent under, scabrous and 
blackish; app. sup. obtusely rounded, concave, testaceous, the 
margins turned in, denticulate and black; app. intermed. short, 
