GLYPHIPTERYX. 173 
cording to Tischer, the larva feeds on heath, drawing the leaves 
together by its silken threads, and is full-grown at the end of 
June; the perfect insect appears in July or August. Lienig says 
that the larva lives on the underside of the leaves of the lime in 
May and September. From the habitats of the insect with us, 
Tischer’s account is more probably correct.) 
Genus Ill. GLYPHIPTERY=X. 
Glyphipteryx p., Hib. V. 421 (1816). Achmia p., Treit.; Dup.; 
Zell. Weophora p., Zett.  Heribeia et Callisto p., Step. 
Caput levigatum. Frons lata. Ocelli magni, pone oculos. Antenne 
tenues, corpore breviores, articulis distinctis. Haustellum mediocre, 
nudum. Palpi labiales arcuati, crassiusculi, infra setoso-pilosuli, 
articulo tertio acuminato, preecedentem longitudine eequante. Ale 
oblongze vel elongate, mediocriter ciliate, posteriores subovatie vel 
lanceolate ; anteriores: vena apicalis simplex ante apicem excurrit, 
infra eam rami 6 discreti; cellula secundaria bene indicata; sub- 
mediana rarius inerassata; subdorsalis breviter furcata; posteriores : 
cellula costalis elongata; vena apicalis simplex, infra eam vene due 
separate. 
Head smooth. Forehead broad.  Ocelli large, behind the eyes. 
Antenne slender, shorter than the body, with distinct joints. Tongue 
of moderate length, naked. Labial palpi arched, rather thick, beneath 
with rather bristly hairs; terminal joint pointed, as long as the second. 
Wings oblong or elongate, with moderately long cilia; the posterior 
rather ovate, or lanceolate. In the anterior wings the simple apical 
vein runs into the costa before the apex; below it are six separate 
veins; the secondary cell is well indicated; the submedian vein is 
rarely thickened towards the apex (slightly so in fuscoviridella and 
Thrasonella, but not at all in the other species); the subdorsal vein 
has a short fork (in fuscoviridella and Thrasonella, being simple in the 
remaining species). In the posterior wings the costal cell is elongate ; 
the apical vein is simple; below it are two separate veins. 
It is difficult to subdivide this genus, the change from one 
species to another being so gradual; thus /uscoviridel/a agrees 
with Zhrasonella, in having the antenne pubescent; yet Zhraso- 
nella differs from fuscoviridella in having the anterior wings 
slightly retuse below the rounded apex, in which respect it 
agrees with Haworthana, equitella, etc.; again Haworthana has 
rather ovate posterior wings, with only moderate cilia; whereas 
equitella and. the following species have lanceolate posterior wings 
with longer cilia. 
i ii tl ee eee 
