British Species of Caddis-flies. 87 
A common species in summer about streams, 
It is extremely uncertain if this be the species intended by 
Fabricius ; in fact, there is nothing whatever in his description to 
indicate that his species really belongs to this genus, or even to 
this family. 
(2.) Maxillary palpi and wings in the male clothed with 
ordinary hawrs ; posterior mings in the male mith- 
out a longitudinal pouch. 
2. Mormonia irrorata, Curtis. (Pl. XII. fig. 7, app.) 
Goéra irrorata, Curt. (*) Phil. Mag. p. 214, 2(1834); Mormonia 
irrorata, Hag. (*) Ent. Ann. 1859, p. 104, 49; MW. minor, 
Steph. (*) Ill. p. 189, 4 (1836); Hag. (*) Stett. Zeit. 1859, 
p. 151, 9. 
Antenne brown, with ochreous annulations; basal joint en- 
tirely brown, with brown hairs. Head thickly clothed with 
golden-yellow hairs. Maxillary palpi in the male small, oval, 
yellow, clothed with yellowish-grey hairs, Mesothorax brown. 
Anterior wings greyish, thickly clothed with ochreous hairs; a 
few blackish hairs on the costal margin near the base; fringes 
grey. Posterior wings grey, with paler fringes. Legs ochreous. 
Abdomen fuscous, the appendices yellow. In the male there isa 
rather long lobe from the upper margin of the last abdominal 
segment; app. sup. small and obtuse; app. inf. long and slender, 
coiled round almost upon themselves. 
Expanse of fore-wings 5—6 lines. 
This little species is widely distributed, but apparently nowhere 
abundant. [It delights in the spray of waterfalls. I have found 
it frequenting the dribbling springs that escaped from the sides 
of an old slate-quarry, and it must have bred amongst the damp 
moss that grew there, as the water formed no stream beneath. I 
possess it from Freshwater (Isle of Wight), Saltash (Cornwall), 
various localities in South Devon and North Wales, from Wor- 
cester, Huddersfield, Haslemere, &c. Northern examples are 
darker than those from the south, 
B. Antenne in the male fringed internally mith long hairs on their 
basal portion ; maxillary palpi in the male long, band-like, 
curved upwards ; costal margin in the male furnished mith 
a long in-turned fringe along the greater part of its length. 
(Helictomerus. ) 
