These moths are distinguished by a little tooth of scales pro- 

 jecting from the interior margin, in the same situation as the 

 lobe in Notodonta (pi. 739), to which they are allied, and 

 Ochsenheimer has included them in the same genus. 



I regret having to supersede the generic name used in the 

 Guide, but Dimorpha had been previously employed by Ju- 

 rine, and Chaonia is objectionable, as that is the name of one 

 of the species in the Wiener Verzeichniss ; I have therefore 

 adopted Hiibner's title Dryomides, which is well applied to 

 the genus, as the caterpillars of all the species live on the oak. 

 There are only two of them British. 



1. Chaonia Wien. Verz. — Och. — Roboris Fab. — Don. 9. pi. 

 299. ? .— Wood, pi. 6.f. 34 ^ . 



Cinereous, superior wings v/ith 2 white denticulated striga?, 

 and a black lunule in the middle ; inferior wings subfuscous. 



June, Colney-hatch, Coomb, Birch, and Darent Woods ; 

 also in Suffolk, Devonshire, and Dunham park, near Worces- 

 ter, the beginning of May. 



The larva is found the middle of September on the oak, 

 and also on the birch and hazel. 



2. Dodonaea W. V.—Curt. Brit. Ent. pi. 755. c^.— Ilicis Fab. 

 — trimacula Esp. Don. 10. 352. 2. ? . — Querneus Haw. var. 

 For the beautiful variety of the male figured I am indebted 



to Mr. T. Desvignes, who received two from Mr. Bowen, of 

 Worcester, who bred them from larvae found in that neigh- 

 bourhood : taken also at Coomb, Birch, and Darent Woods, 

 in May and June. 



The caterpillar, which is copied from Hiibner, lives upon 

 the oak. 



3. Querna Fab. — Hiib. Bomb. tab. 3./. 9. ? 



Griseous ash-colour, superior wings with 2 undulating white 

 fasciae margined with black, and a white lunule in the mid- 

 dle : inferior wings white. 

 I cannot find a British specimen of this insect, of which I 



have a foreign example, and I doubt not but females of the 



former species have been mistaken for it. 



Qiicrcus Bobur, the True British Oak, is represented in 



the plate. 



