146 BEITISH LEPIDOPTEEA. 



1839, p. 183 ; "Ber. Sehles. Tausch. Schmett.," iv., p. 15 (1843) ; vi., p. 11 (1845) ; 

 viii., p. 13 (1846) ; Zell. (and Lienig), " Isis," 1846, p. 270 ; Sta., " Cat.," p. 6 

 (1849) ; " Ent. Comp.," 1st ed., pp. 10, 39, 49 (1852). Lampronia, Stphs., " Sys. Cat.," 

 no. 7569, p. 227 (1829) ; " Illus.," iv., p. 358 (1835) ; Curtis, " Guide," 1st ed., p. 187 

 (1831), 2nd ed., p. 215 (1837); Wood, " Ind. Ent.," p. 229 (?1839) ; Tgstr., " Bidr.," 

 p. 107 (1847) ; Fologne, " Ann. Soc. Ent. Belg.," iii., p, 143 (1859). Incurvaria, 

 Dup., "Cat.," p. 355 (1846). 



Zeller's diagnosis of this genus reads (Linn. Ent., vii., p. 332) as 

 follows : 



Caput superne et in fronte hirsutum. Palpi maxillares nulli ; labiales cylin- 

 drici pilosi. Ocelli distincti pone oculos. Antennae setaceas. <? ciliatas, ? sub- 

 dentatas. Ala3 anteriores oblongse, medioeriter ciliatas, anteriorum cellula dis- 

 coidalis venas in marginem posticum sex emittit, supremam simplicem, sub- 

 apicalem. $ alata, ano lanato. Larva saccophora, sacco in indusiuni incluso. 

 In this genus Zeller places only one species — maryinejmnctella, 

 St. (herminata, Geoff.), which, therefore, becomes the type. 



The chief characters of the genus (based on D. herminata) may 

 be summarised as follows : 



Ovum. — Oval in outline, long axis horizontal, surface smooth, covered with 

 hairs from body of female. 



Case.- — Trigonal in section, three distinct lips at opening, covered with sand, 

 enveloped in a loose outside sac covered with insect debris, &c. 



Larva.- — Head retractile ; thoracic segments with corneous plates ; tubercles with 

 simple setae ; i and ii trapezoidal (ii, however, but little outside i), iii well-developed, 

 iv and v subspiracular (iv the stronger), vi single, vii consisting of two separate 

 tubercles ; the prolegs short on the abdominal segments 3-6, anal ones larger and 

 stronger, the hooks arranged in oval form (broken on inner margin) ; pupates 

 within larval case. 



Pupa. — ? . Large dorsal headpiece (twice as large as prothorax) ; small eye- 

 collar (maxillary palpus) ; labrum and labial palpi well-developed ; apex of wings 

 to end of 4th abdominal segment ; 3rd pair of legs beyond 5th abdominal segment ; 

 antennas not quite as long as wings ; tubercles and setae as in larva ; transverse 

 band of dorsal spines on front edge of abdominal segments 3-7 ; recurved hairs on 

 abdominal segments, 7-10; two dorso-anal spikes; movable incisions, 2-3 (dorsally), 

 3-4, 4-5, 5-6, 6-7 (male, 7-8 also). 



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

 cylindrical, drooping, loosely-scaled; eyes compound; ocelli, one at base of 

 each antenna ; antennae c? ciliated, ? subdentate, basal joint without pecten ; 

 posterior tibiae smooth-scaled ; both sexes winged ; ? with anal tuft. 



Neuration. — Forewings, lb furcate, 7 to termen. Hindwings, 6 and 7 some- 

 times short-stalked (Meyrick). 



This genus is particularly Taleporiid in its affinities. It has the 

 characteristic female anal tuft, and also ocelli ; the pupa has the two 

 dorso-anal spikes that are noticeable in the generalised Psychids, the 

 long recurved hairs on abdominal segments 7-10, the anterior pad of 

 hooks on the abdominal segments 3-7. The larva is generalised so far 

 as its tubercles are concerned, but the abdominal prolegs are typically 

 Psychid. The winged female covers her eggs with hairs from the anal 

 tuft, whilst the Taleporiids have the same habit, except that their eggs 

 are laid in the case. The case itself is peculiar, the trigonal Taleporiid- 

 looking case being enveloped in an outer covering which is ornamented 

 with insect debris. Zeller notes the peculiarity that the larval case stands 

 in an outer one that allows the first to project at both ends, and considers 

 that the presence of ocelli in both sexes prevents the union of this genus 

 with Xysmatodoma (Narycia). He further notes that " the discoidal 

 cell of the forewing has the longitudinal ' foldline' thickened posteriorly, 

 and that this bifurcates exteriorly, the branches meeting the distinct 

 transverse nervure ; the fork is so sharp and peculiar that it appears to 

 be a real nervure. Six nervures run to the outer margin of the forewing 



