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294 LYONETID®. 
Occurs among elms in May and June. I have seen at the end 
of August minute mines on elm-leaves, probably caused by this 
species, but was unable to meet with the larva. The larvee were 
found by Mann on elms. 
9. Prangutella, Goize, E. B. iii. 4. 169. 291 (1783).—Frangu- 
lella, Zell— _Alnella, Vill.—rhamnifoliella, Treit.; FP. y. R. pl. 7; Sta. 
Alis anticis albis, maculis quatuor coste obliquis fuscis, macula dorsi 
medii majore fusca, punctulo nigro plice, punctulo altero nigro disci 
ante apicem ; capillis albis. Exp. al. 34 lin. 
Head and face white. Antenne white, annulated with fuscous. 
Anterior wings white, towards the apex irrorated with fuscous, with 
four costal spots and one dorsal spot fuscous; the first costal spot is 
near the base and very small (sometimes entirely wanting), the second 
and third are obliquely placed, one on each side of the middle, the 
fourth lies in the apex; the dorsal spot is opposite the second and 
third costal spots, and uniting with them forms an angulated fascia; 
on the inner edge of this spot in the fold is a black do¢, and a black 
dot lies beyond the apex of the third costal spot; cilia whitish, tra- 
versed by two dark hinder-marginal lines. Posterior wings grey, with 
paler cilia. 
Abundant in June and July among buckthorn, the leaves of 
which plant are at first mined, and afterwards eaten from the ex- 
terior, by the larvee in August and September. 
10. Hippocastanella, Dup. L. F. xi. 530. pl. 306. f. 4 (1838); 
Lienig; Zell.; Sta. Alis anticis griseo-fuscis, macula basali, macula 
dorsi ante medium, macula costa mediz, maculaque ad angulum analem 
majore per striam brunneam interrupta flavidis ; capillis luteis. Exp. al. 
8 lin. 
Head whitish. Face silvery. Antenne dark fuscous, basal joint 
white. Anterior wings greyish-fuscous, with a yellowish-white spot at 
the base, a similar spot on the inner margin before the middle, and 
one on the costa in the middle, and a larger yellowish-white patch at 
the anal angle, which is intersected by a narrow streak of the ground- 
colour running into the extreme apex of the wing; cilia grey. Poste- 
rior wings pale grey, with paler cilia. 
Hitherto scarce; has been taken in Leigh Wood, near Bristol, 
and in the neighbourhood of Burton-on-Trent. Appears in May 
and August; the larva feeding on limes and horse-chestnuts (ac- 
cording to Lienig, also on birch and alder), in June and August. 
1l. cristatella (I. v. R.), Zell. Isis, 1839, p. 214; Sta. Alis 
anticis nitidis, dilute griseis, unicoloribus ; capillis Juéeis. Exp. al. 8 lin, 
Head /utcous. Face grey. Antenne: dark fuscous, basal joint whit- 
ish. Anterior wings unicolorous, shining pale grey ; cilia yellowish- 
grey. Posterior wings grey, with paler cilia. 
