664 
ZOOLOGICAL LITERATURE. 
pp. 779-890) . All the described families,, genera, and species 
are arranged in alphabetical order ; the names adopted by Hagen 
are marked with an f, and the rest are accompanied with indica- 
tions of the genera or species with which they are synonymous. 
For the purpose of systematic arrangement the authoi: gives, at 
the commencement of his list, a tabular view of the families and 
genera admitted by him. 
M‘Lachlan (Ent. M. Mag. vol. i. pp. 26-31) has described the British 
genera and species of Hydropsychidce. He gives the following tabular ar- 
rangement of the genera of this group : — 
A. With a transverse vein towards the middle of the costal margin of the 
anterior wings uniting the costa and subcosta, 
a. Anterior branch of ramus discoidalis in fore wings forming a forked 
cell on the apical margin. 
b. Posterior wings broad, anal portion well developed, costal 
margin slightly concave. 
c. Intermediate legs of $ not dilated . .Plectrocnemia (Steph.). 
cc. Intermediate legs of $ dilated . . . .Polyeentropus (Curt.), 
bb. Posterior wings narrow, especially at basej costal margin 
with a slight elevation near middle. Ecnomus (g. n.) 
aa. Anterior branch of ramus discoidalis in fore wings simple. 
Cyrnus (Steph.). 
AA. Without a transverse vein uniting the costa and subcosta near the 
middle Neureclipsis (g. n.). 
Sericostoma spencii. A. E. Eaton remarks on the variation of this species, 
Ent. M. Mag. vol. i. p. 47. 
M^Lachlan describes and figures a curious caddisworm-case collected in 
Ceylon by Dr. Nietner. The case is tubular, tapering to a point, and nearly 
circular in section ; the orifice is surmounted by a broad, nearly circular 
shield, convex above, concave beneath. The whole is composed of fine 
grains of sand cemented together. The case probably belongs to a species of 
Setodes. Ent. M. Mag. vol. i. pp. 125 & 126. 
In an elaborate memoir on the cases of Phryganidce (Stett. 
ent. Zeit. 1864, pp. 113-121) Hagen gives a monographic 
description of these curious dwellings. In the first portion of 
his memoir he publishes some communications received from 
Bremi relating to the cases of Phryganidan larvte living out of 
water, some of them belonging to the genus Enoicyla, — to a case 
supposed to be that of a species of Agraylea^ — and to the discovery 
of some forms of convoluted cases, described under the name of 
Helicopsyche. Of the last-mentioned form Hagen names and 
describes 15 cases. The following is given as BremPs classifi- 
cation of Phryganidan cases : — 
I. The attached cases are of the same type, namely, a longer or shorter oval, 
' constructed of coarse or fine stones, attached to the upper or lower surfaces of 
• stones. 
