PHYLLOCNISTIS. 285 
Genus Il. PHYLLOCNISTIS. 
Puyxtocnistts, Zell. L. E. iii, 264 (1848). Opostega p., Zell. Isis, 
1839; Dup. 
Capilli levigati. Antenne alis anterioribus breviores, conchula parva 
instructs. Palpi labiales penduli, filiformes. Ale anteriores cau- 
dulatee, posteriores lancedlato-lineares; anteriores: cellula discoida- 
lis acuta venulas tres in costam, unam in apicem, unam in marginem 
posticum emittit ; vena subdorsalis simplex; posteriores: vena me- 
diana dorso proxima venulas tres emittit. 
Head smooth. Antenne shorter than the anterior wings, with a 
small eye-eap, Labial palpi drooping, filiform. Anterior wings cau- 
dulate, the posterior linear-lanceolate. In the anterior wings the acute 
discoidal cell emits three veins to the costa, one to the apex, one to 
the hinder margin; the subdorsal vein is simple; in the posterior 
wings the median vein which runs near the inner margin emits three 
veins. 
This genus resembles the preceding in the habit of the perfect 
insect ; but the larva (according to Zeller) is apod, and does not 
quit the mine, but forms its cocoon within the leaf, Only two 
very closely allied species are known. 
1. suffusella, Zell. Isis, 1847, p.894; Id. L. B.; iii. 266. ii. pl. 2. 
f. 32; Sta. Alis anticis latiusculis albis, nebula fusca disci pone me- 
dium, striolis quatuor coste, duabus dorsi fuscis, puneto apicis atro. 
Exp. al. 34 lin. 
Head, face, and palpi white. Antenne pale fuscous; basal joint 
white. Anterior wings white, with a fuscous élofch on the dise beyond 
the middle, and above it on the costa a short fuscous streak obliquely 
placed, and beyond are three other short streaks, nearly straight, the 
first of which unites with ote from the inner margin, forming with it 
a slightly angulated transverse line; at the apex is a deep black spot, 
from which three fuscous streaks radiate in the white cilia, and below it 
isa fuscous hinder-marginal line. At the base of the wing on the inner 
margin is sometimes a fuscous blotch, and the entire wing is frequently 
more or less suffused with pale fuscous, Posterior wings grey, with 
whitish cilia. 
Hitherto scarce; appears in July and autumn, hybernated spe- 
cimens occurring in spring; the larva mines in great blotches the 
leaves of poplars in June and August. 
2. saligna, Zell. L. E. iii. 270 (1848); Sta.—cerasifoliella, Sta. 
Zool. 1848.—anipunctella, Step.? Alis anticis angustulis albis, Zinea 
geminata ex basi ultra medium producta, maculam fuscam includente, 
striolis quatuor coste, duabus dorsi fuseis, puneto apicis atro, Exp. 
al. 3 lin. 
