[ 451 ] 



LXIX. An Abstract of the Characters o/'Ochsenheimer's Genera 

 of the Lepidoptera of Europe ; isiith a List of the Species of 

 each Genus, and Beference to one or more of their respec- 

 tive Icones. By J. G. Children, F.B.S. L. Sr E. F.L.S. Sfc. 



[Concluded from page 335.] 

 Genus 96. AMPHIDASIS, Ochs., Treitsch. 



(Amphidasis, Phigalia, Nyssia, Duponchel.) 

 Amphidasis, Biston, Stephens. 



Ante7ince bipectinated in the males, simple in the females ; 

 the apex sometimes naked.— Wings strong, generally of a 

 whitish-gray colour, with dark, indistinct bands, and coarse 

 dots; females occasionally apterous. — Body short, and 

 pointed in the males ; in the females stout, conical : thorax 

 broad, hairy. 



Species. Icon. 



l.Amp.Betularia, Linn.* f Hlibn.Geom.tab.33.f.l73.(fcem.) 

 2.—Prodromaria, Fab.*t Hiibn.Geom.tab.33.f.l72.(mas.) 



S.—Hirtaria, Linn.* f HUbn.Geom.tab.33. f.l75.(mas.) 



4. Pilosaria, HUbn.j § ...HUbn.Geom. tab.34.f.l76.(raas.) 



* Biston, Stephens. 



t Amphidasis, Duponchel.—" AntenncB pectinated in the males, simple 

 in the females. Terminal margin of the wings simple or entire. — Thorax 

 broad, woolly. — Wings thick and small in proportion to the body.-— Head 

 sunk beneath the i\\OTa.\.— Abdomen large, conical.— il/a,ri/te none, or 

 scarcely discernible.— /'V?«ate winged.— Larw long, cylindrical, tubercu- 

 lar; head flat, more or less emarginate on the upper part. — Pupa naked, in 

 the earth." — Duponchel, Lep. de France, torn. vii. part. ii. p. 268. Except 

 that the larva: are decided loopers, the three species included in this genus 

 by M. Duponchel, migiit be taken for Bombyces, which, in their perfect 

 state, they very much resemble; they differ from them, however, by the 

 antennas of the females being entirely filiform, whereas in the Bombyces 

 they are always slightly pectinated, or ciliated. 



f Amphidasis, Stephens. -i- j • 



§ FiiiGAi.iA, Duponchel.—" Antenna; pectinated in the males, cihated in 

 the females.- Terminal margin of the wings simple.— T/iorcj: broad, woolly. 

 Abdomen slender.— Wings thin, and large in proportion to the body.— Palpi 

 velvety, not projecting beyond the iorchcnd.— Maxilla: none, or Harccly 

 discernible. — i'ma/« apterous.— I/flri'« cylindrical, of equal size tlnough. 

 out, with a few short hairs; head iiemispherical ; a bifid tubercle on the 

 eleventh segment.— P(/;w naked, in the earth."— 7J(/;jo»c/i. /. c. p. 296. 

 Duponchel has formed this genus on the single species, pilosaria, which dif- 

 fers from hiy Amphidases and Nyssia:, by its slender abdomen, and proper- 

 tionately wider and thinner wings ; and also from the former by the female 

 being apterous. 



3 M 2 .O.AiMj). 



