lL ee er ee 
154 GELECHID 4, 
tenn basim versus incrassate, dorso e basi squamato-piloso, apice thu- 
diusculo. Haustellum mediocre, squamatum. Palpi labiales vix 
thoracis longitudine, reflexi, articulo secundo compresso, pilis ap- 
pressis, tertio tenui, acuto, prioris fere longitudine. Ale elongate, 
posteriores ovate, angulo anali obtuso; anteriores: vene apicalis 
ramus inferior supra apicem exit; cellula secundaria nulla; vena 
subdorsalis fureata; posteriores: venee due e venula transversa pro- 
cedunt. 
Head smooth. Torehead, between the antenne, rather narrow. 
Ocelli none. Antennae towards the base thickened, with hairy scales on 
the back at the base, with the apex comparatively naked. Tongue of 
moderate length, clothed with scales. Labial palpi hardly as long as 
the thorax, reflexed; the second joint compressed, with appressed 
‘scales; the third joint slender, pointed, nearly as long as the second, 
Wings elongate, the posterior ovate, with obtuse anal angle. In the 
anterior wings the lower branch of the apical vein runs into the costa 
before the apex; there is no secondary cell, and the subdorsal vein is 
furcate; in the posterior wings two veins proceed from the transverse 
vein. 
We have but two species in this genus (a third, closely allied 
to Oliviella, has been met with in Asia Minor); being of gay 
colours, they fly during the day (it being found an almost inva- 
riable rule, that the richly-coloured species of Lepidoptera fly 
during the day, when their colours may be exposed to view) ; the 
flight of D. sulphurella is rather straight and sharp, but that of 
D. Oliviella is undulating and sluggish. The larva of D. su/phu- 
rella has been known for some time; it feeds in decayed and de- 
caying wood, preferring to place itself immediately beneath the 
bark, but not disdaining to penetrate deep into the wood itself; it 
is of an unusually elongated form. 
1. sulphurella, Fab. S. B. 670. 19 (1775); Curt. B. Ei. fo. 408 ; 
Step.—annulifera, Kour.—cornutella, Fab.—orbonella, Wiib.; Dup.; 
Zell. Alis anticis fuscis, dilute luteo-irroratis, praecipue apicem versus, 
stria brevi basali juxta costam, stria altera brevi plicee (Q ultra me- 
dium producta) maculisque oppositis (costali minore, obsoletiore) pone 
medium dilute luteis ; alis posticis dilute luteis, saturate fusco-fimbriatis. 
Exp. al. 7% lin. 
Head bronzy, with a few yellow hairs. Face bronzy. Palpi bright 
yellow; terminal joint dark fuscous. Antenne dark fuscous, almost 
black, with three white annulations a little beyond the middle. An- 
terior wings fuscous, with numerous pale yellow scales, especially to- 
wards the hinder margin; from the base is a short yellow streak near 
the costa, and another on the fold (continued to beyond the middle in 
the 2); on the inner margin, beyond the middle, is a triangular pale yel- 
low spot, and on the costa nearly opposite is a smaller but distinct pale 
