LITHOCOLLETIS. 277 
side of the leaves of alders in autumn and July; it constructs a 
firm cocoon of an ochreous colour. 
27. Hleegeriella, Zcll. L. B. i. 232. pl. 1. f. 28 (1846); Sta.; 
v. Nicelli.—/enella, Sta. Zool. 1848, p. 2152. Alis anticis albis, linea 
basali fusca, lineis guatuor coste, tridus dorsi fuscis, introrsum fus- 
cescente marginatis, puncto ovato apicis atro. Exp. al. 34 lin. 
Head, face, palpi, and antennze white. Anterior wings white, with 
a brownish-black édasal line, and four similarly coloured lines from 
the costa, and ¢hree from the inner margin, all more or less broadly 
bordered internally with pale fuscous, their exterior margins being 
white; the black apical spot is oval, Posterior wings pale grey, with 
whitish cilia. 
Not uncommon, appearing in May and August. The larva 
mines in the leaves of the oak in autumn and July. 
28. Cramerella, Fab. B.S. iii. 2.327.173 (1794); Haw:; Step.; 
Zell.; Sta.; v. Nicelli. Alis anticis albidis, lineis é7idus coste, duabus 
dorsi fusco-nigris, introrsum fuscescente-marginatis, puncto rotundo api- 
cis atro. Exp. al. 3}—42 lin. 
Head, face, palpi, and antennae white. Anterior wings pearly-white, 
with ¢/ee dark fuscous lines from the costa and éwo from the inner 
margin, all internally bordered with pale fuscous, sometimes very 
broadly, thus making the apical half of the wing pale fuscous, with 
merely white spots on the exterior margins of these lines; the black 
apical spot is round. Posterior wings grey, with paler cilia. 
Very abundant in May and August. The larva mines the 
underside of the leaves of the oak in autumn and July; owing to 
the number: of the oak-feeding species, the individual mines of 
each have not yet been sufficiently distinguished. Looking at 
the infinite variety in every department of nature, it is probable 
that the mine of each species has some distinctive peculiarity. 
29. tenella, Zell. L. E. i, 236. pl. 1. f. 30 (1846); Sta. Alis 
anticis albis, strigulis guatuor costee, tribus dorsi ochraceo-flavidis, ex- 
trorsum fusco-marginatis, dizea apicis postice inerassata atra. Exp. al. 
3% lin. 
Head whitish. Face and palpi white. Antennae whitish, annulated 
with fuscous. Anterior wings white or whitish, with fow yellowish 
streaks from the costa, and ¢ee from the inner margin, all are exter- 
nally dark-margined; at the apex is a short black séreak, internally 
pointed, externally rounded; above and below it the wing is entirely 
ochreous. Posterior wings pale grey, with paler cilia. 
Not scarce in May and August. The larva mines the under- 
side of the leaves of the hornbeam in autumn and July. 
30. sylvella, Haw. L. B. 579 (1829); Step.; Sta.—acerifoliella, 
Zell, L. W. i. 239. pl. 1. f. 82, 83.—acernella, Dup. Alis anticis albis 
