British Species of Caddis-flies. 59 
but I have seen specimens from near London, Haslemere, the Isle 
of Wight, Exeter, Leominster (?), Thorne Moor, Scarborough, 
and other localities. 
This and the preceding are so closely related, that it is impossi- 
ble for any but a practised eye to separate them without examining 
the appendices; yet the much broader pale anterior margin of 
the fore-wings is a constant and good character, and one that 
will be always confirmed by an examination of the anal parts. 
Stephens’ Collection does not contain this species; the single 
example in Curtis’ Collection was mixed with the next following, 
but [ think it advisable to apply Curtis’ name here. This does 
not appear to be known on the Continent, at least Dr. Hagen did 
not know it when I sent examples to him, and had not noticed 
the peculiarities of Curtis’ specimen, considering it the same as 
S. hieroglyphicus, to which he applied the name of vibex. 
3. Stenophylax striatus, Pictet. (Pl. XI. fig. 2, app.) 
Phryganea striata, Pict. Recherch. p. 132, 1, pl. 6, fig. 1 
(1834) ; Stenophylax striatus, Hag. (*) Stett. Zeit. 1859, 
p- 133, 2; Ent. Ann. 1859, p. 92, 32; M‘Lach. Trans, Ent, 
Soc. ser. 3, i. 235. 
In form and coloration very similar to S. hieroglyphicus, but 
smaller, The sides of the mesothorax darker, and the pale 
space about the anastomosis not evident. In the male the upper 
margin of the last abdominal segment is produced in the middle 
into a large triangular flap, which is bent under and densely 
scabrous and black; app. sup. small and yellow, concave, the 
apical margin only is visible from above; app. intermed. needle- 
shaped, shining brown, the tips convergent; app. inf. not pro- 
duced or pointed, broad, oblique, fringed with long hairs ; 
penis-sheaths nearly parallel, shining brown; penis greatly ex- 
serted, about the same length as the sheaths. 
Expanse of fore-wings 14—18 lines. 
Not a common species. 1 have examples from various loca- 
lities, but can only speak with certainty of Leominster and 
Huddersfield. 
4, Stenophylaz lateralis, Stephens. (PI. XI. figs. 3, 4, app.) 
Halesus lateralis, Steph. (*) Il. p. 210, 6 (1837) ; Stenophylax 
lateralis, M‘Lach. Trans. Ent. Soc. ser. 3, i. 236; Halesus 
latipennis, Steph. (*) Lll. p. 209, 4 (1837) ; Limnephilus tene- 
brosus, Curt. (*) Coll. 
Antenne, head and palpi reddish-testaceous. Mesothorax 
