54 Mr. R. M‘Lachlan’s Monograph of the 
marked. Posterior wings subhyaline, with a very slight sinua- 
tion below the apex; fourth apical cell as broad as the second. 
Tibiz strongly spinose; anterior with one apical spur; interme- 
diate with one median spur and two apical, of which the inner is 
the longest ; posterior with two median and two nearly equal apical 
spurs. Abdominal appendices varying considerably according 
to the species. In 4. nervosa and its allies the app. sup. of the 
male are very large and concave; app. intermed. broad, finely 
pointed, straight and divaricating; app. inf. with a fine straight 
point ; the female has large and broad superior valves. 
Larvee inhabiting canals and not very swift streams. Case a 
tube wider at one end, composed of small stones and sand, to 
which are affixed longitudinally long pieces of twigs or straws. 
This genus is difficult to separate by any very certain characters 
from Limnephilus (section Desmotaulius) on the one hand and 
from Stenophylax on the other. Brauer’s character of the com- 
parative width of the 2nd and 4th apical cells in the posterior 
wings seems to be constant, but is nevertheless of slight generic 
value, yet it may be used with advantage in separating this genus 
from Limnephilus. The dark unicolorous appearance and para- 
bolic apex of the anterior wings of these insects are so different 
from most of the species of Limnephilus, that at first sight it would 
appear an easy matter to separate them, but L. fumigatus (p. 53) 
has so much the facies of an Anabolia that it requires no little reso- 
lution to retain it in the other genus. With Stenophylaz the rela- 
tionship is still nearer ; the best character appears to consist in the 
habit of the larva, which in the latter genus inhabits swiftly run- 
ning streams and temporarily fixes its case to prevent being swept 
away. But slight differences of habit should not carry much 
weight when unaccompanied by any striking structural characters, 
and I do not feel quite sure that I am right in separating the two 
genera. 
We possess only two species of Anabolia in this country, so 
different that no difticulty can be experienced in distinguishing 
them, but on the Continent there are several most closely allied. 
1. Anabolia nervosa, Curtis. 
(Pl. II. fig. 2, larva; fig. 29, case; Pl. IV. fig. 3, neuration ; 
, Pl. X. figs. 19, 20, app.) 
Limnephilus nervosus (Leach, MS.), Curtis (*) Phil. Mag. p. 
124, 27 (1834); Anabolia nervosa, Steph. (*) ll. p. 230, 1; 
Hag. (*) Ent. Ann. 1859, p. 90, 28; Phryganea fusca, Pict. 
(*) Recherch. p. 153, 22, pl. 10, fig. 1 (1834) ; Limnephila 
