Ochsenheimer's Genera of the Lepidojitera oJEuroi^e. 463 



Species. Icon. 



^.Wm.Lutearia, Fab.*. . . .Hlibn. Geom.tab.23.f.l21.(mas.) 

 3. — Chcerophyllata, Linn.f"|Hubn. Geom.tab. 38.f.l96.(mas.) 

 Fam. B. 

 4. — Griseata,'Wien.\ erz. . .Hlibn. Geom. tab.41.f. 216.(mas.) 

 5. — Niveata, Treitsch. . . .Hiibn. Geom. tab.41.f.l217.(fcem.) 

 6. — Illibaria, Hubn Hiibn.Geom. tab. 40.f.207. (mas.) 



Genus 106. ID^A, Oc/w., Treitsch. 



(SioNA, Pelt.onia, DosiTHEA, Duponchel. 

 iDiEA, Ptychopoda, Stephens.) 



0^5. M. Duponchel, whose profound knowledge of the sub- 

 ject entitles his remarks to more than common attention 

 and respect, says of this genus; — "prejudiced in favour of 

 his (Treitschke's) arrangement of the Phalaenidae, I had 

 intended to adopt it, unaltered, in this work ; but on ap- 

 plying it to my own collection, I found that the Author 

 comprehends a host of species, in his genera, which do not 

 possess the characters assigned respectively to them ; and 

 that his nineteenth and last genus, which he calls Idcsa, is 

 composed of species the most incongruous, such as dealbata, 

 calabraria, ornataria, &c. : so that one might imagine that 

 he has here brought together all those species for which he 

 could not find a place in either of his preceding eighteen 

 genera, without troubling himself to consider whether or 

 not any analogy exists between them. However, with the 

 exception of this genus, which ought to be abolished, the 

 others appear to rest on solid bases; and I have consequently 

 adopted them, but with the restriction, of referring to each, 

 those species only which really belong to it." — As to the 

 name Idcea, Duponchel very justly observes that it cannot 

 stand, having already been employed to denote an exotic 

 genus of the Papilionidai. 



All the 'wings y/'yih two or three dusky, somewhat arched, and 

 undulated transverse bands, with, generally, between them 

 a point or crescent-shaped spot. — Larva very thin in pro- 

 portion to their length, almost filiform. — Mctamoiyhosis 

 subterranean. 



• Cleocene, Duponchel. — " All the ivlngs of one colour, sometimes very 

 light, sometimes very dark. — Paljn short, velvety. — MaxilUe very long." — 

 Uuponc/t. I.e. p. 10!). t Mjnoa, Stephens. 



^ Tanaciia, Duponchel. " Superior angle of the Jlrsl mugs, rounded. — 

 Body long and thin.— iW;jt short. — Mcuilta: long." — Dupwich. I. c.\> 1 ' '-*. 



