British Species of Caddis-flies. 114 
not dilated in the female; anterior tibia with two moderately 
long and equal apical spurs ; intermediate and posterior tibiae each 
with two pairs of long unequal spurs. Abdornen short. The second 
joint of the inferior appendices in the male is simple. In the 
female the abdomen ends in a long compressed ovipositor, 
Larva unknown, frequenting swiftly-running streams. 
This genus I have named after Mr. P. C. Wormald, one of the 
few Entomologists who have paid attention to the Zrichoptera. It 
is allied to Philopotamus, but differs in the form of the palpi and 
in the neuration of the wings, as was pointed out by Dr. Hagen 
in the Stettin “ Entomologische Zeitung” for 1860, p. 279. The 
species are small and unicolorous, 
1. Wormaldia occipitalis, Pictet 
(Pl. VII. fig. 7, neuration and maxillary palpus; Pl. XIII. 
fig. 23, app.) 
IT ydropsyche occipitalis, Pict. (*) Recherch. p. 211, 14, pl. 19, 
fig. 8 (1834); Philopotamus occipilalis, Hag. (*) Stett. Zeit, 
1860, p. 279; M‘Lach. Ent. Ann, 1863, p. 135; Aphelocheira 
subaurata, Steph. (*) Ill. p. 180, 2 (1836) ; Philopotamus longi- 
pennis, Brauer, Neurop. Aust. p. 39 (1857); P. Ramburii, 
Kol. Gen. et Spec. Trichop. pt. 2, p. 207, 1 (1859) ; LZydro- 
psyche brevicornis, Pict. Recherch. p. 211, 13, pl. 19, fig. 7 
(1834) ? 
Antenne brown, annulated with yellow. Head fuscous, clothed 
with yellowish hairs. Palpi fuscous. Mesothorax shining brown. 
Anterior wings yellowish-grey, the veins towards the base clothed 
with long yellow hairs. Posterior wings subhyaline, smoky-grey. 
Legs ochreous. Abdomen greyish-fuscous above, paler beneath. 
In the male the upper margin of the last abdominal segment is 
rounded off, slightly excised; app. sup. small, blackish ; app. 
inf, long, testaceous, the apical joint rather broad and obtuse at 
the tip; penis-cover (or penis?) somewhat pointed, yellowish. 
The ovipositor of the female is long and yellowish, 
Expanse of fore-wings 6—7 lines. 
Not an uncommon species about swiftly-running streams, 
especially in the North and West of England. Stephens gives 
the metropolitan district as a locality, but I have not seen recent 
specimens from thence. It decidedly prefers mountaincus dis- 
tricts, appearing in summer and autumn. 
