136 BRITISH LEPIDOPTERA. 



nervures very indistinct; posterior smaller, somewhat ovate, furnished with longer cilia; 

 abdomen shortish, stout, somewhat cylindric ; legs stoutish, anterior tibiae with a single 

 spur at the inner apex, intermediate with a pair, and posterior with a pair at the apex, 

 and a second pair in the middle." He then adds: " The distinctly pectinated fili- 

 form antennae of this genus at once serve to distinguish it from the other 

 Trichoptera, from which, like Acentropus, they also differ in having the wings 

 clothed with scale-like hairs ; but, unlike that genus, their legs are provided with 

 ample spurs, and the sides of the thorax are not furnished with tippets." 



The only species cited by Stephens under this genus is elegans 

 ( = monilifera) which, therefore, is the type of the genus. The chief 

 characters of the genus may be summarised as follows : — 



Ovum. — Oval in outline, almost circular in transverse section, surface very 

 smooth, unsculptured. 



Case. — Somewhat flattened, neck slightly constricted, faintly trigonal in 

 section, lateral flanges moderately developed, upper surface convex, covered with 

 lichen (minute pieces). 



Larva. — Head small, retractile ; thorax slender ; abdomen bulky ; largest seg- 

 ments 3-6 abdominals ; pro-, meso-, and metathorax with dark brown corneous 

 dorsal plates ; anal segment with black-brown plate ; slight constriction between pro- 

 and mesothorax ; true legs strong (especially 3rd pair) ; prolegs short (same type as in 

 higher Psychids, but oval of crochets more broken on inner margin) ; dorsal 

 tubercles trapezoidal ; setae, with basal plates, ii stronger than i, iii strong, iv 

 strong and v weak near each other ; lateral longitudinal flanges distinct. 



Pupa. — Dorsal head-piece moderate ; labrum well developed, two bristles at base, 

 hooked ; mandibles very large ; maxillae triangular, well-developed ; maxillary 

 palpus well marked ; labial palpi, two flaps between maxillae ; tubercles as in larva ; 

 patch of dorsal spines anterior to i ; long recurved hairs on abdominal segments 

 9-10 ; two dorso-anal spikes on 10; spiracles on well-developed cones ; two rounded 

 bosses ventrally on 9 ( <? ) marking the genital organs. 



Imago. — Head rough ; tongue and maxillary palpi obsolete ; labial palpi, 

 porrected, short, hairy ; eyes compound ; no ocelli ; antennae with two rows of scales 

 completely encircling each segment in ? , replaced ventrally in $ by two sets of 

 hairs, which project laterally, basal joint with pecten ; posterior tibiae hairy ; both 

 sexes winged ; female with anal tuft. 



Neueation. — Forewings — lb furcate, 7 absent, 8 and 9 sometimes short-stalked. 

 Hindwings — Nervures all separate (Meyrick). 



There appears to be only the Paltearctic genus Narycia in this 

 family since Meyrick has sunk the Australian genera (Jonoeca and 

 (Ecobia as synonymous therewith. Most authorities agree in placing 

 it very near the genus Diplodoma which is correct so far as both have 

 retained many of the generalised characters of the earlier forms from 

 which the Psychids have originated. Both genera, too, have winged 

 females. Whereas, however, the larval case and larva of Narycia are 

 particularly Solenobiid, those of Diplodoma are more especially Taleporiid. 

 In antennal structure, as has already been mentioned, the iemaleNarycia 

 is rather Adelid than Psychid, whilst the male has antennas of dis- 

 tinct Psychic! structure. There appear to be only two known Palae- 

 arctic species in this genus — monilifera, Geoff, (melanella, Haw.) and 

 a'strella, H.-Sch. — the first-named generally distributed from Dalmatia 

 and Hungary to Britain, the latter confined, so far as we know at 

 present, to Bohemia and Silesia. Meyrick asserts, however, "that the 

 genus is very numerously represented in Australia, some species 

 attaining a considerable size." He himself described 29 Australian 

 species in 1893 (Pruc. Linn. Soc. New X. Wales, vii., 490-506). It is 

 possible, therefore, that when thoroughly worked out, the subfamily 

 may be found to contain a long series of allied genera. 



Hagen discovered, in 1857, that Narycia eleyansoi the Stephensian 

 collection, which had been described and placed as a neuropterous 



