OKCOPIIOKIDAE 613 



Forewings without scale-tufts . . .13. 



13. Basal joint of antennae with pecten . 14. Acomfsia. 



„ ,, „ without pecten . . 14. 



14. Hindwings with 3 and 4 connate . . 11. Psecadia. 



„ ,, „ approximated 7. Semioscopis. 



1. Caucina, Jf/i. 



Tongue developed. Antennae over 1, in c? thick, simple, 

 basal joint with pecten. Labial palpi moderately long, second 

 joint with appressed scales, thickened towards apex, terminal 

 rather short. Forewings : 2 widely remote, 3 and 4 stalked, 7 

 to termen. Hindwings 1, elongate-ovate, cilia §; 3 and 4 

 connate. 



Only the single species is known. Imago with forewings 

 suboblong, termen little oblique. 



1. 0. quercana, F. 15-19 mm. Forewings light ochrcous, 

 more or less purple-tinged, sprinkled with dark fuscous ; costal 

 edge purple ; a yellow blotch along costa near base, and another 

 beyond middle ; a fuscous transverse line at \, followed by a 

 yellowish suffusion towards dorsum; stigmata dark grey, plical 

 usually faint ; a terminal purple line ; cilia bright yellow except 

 on tornus. Hindwings yellow-whitish, apex rosy-tinged. 



England, Ireland, very common ; C. and S. Europe ; 7, 8. 

 Larva pale green; dorsal line darker, paler-edged; head 

 yellowish-green : in a flat web beneath leaves of oak, beech, 

 apple, etc. ; 5, 6. 



2. Hypercallia, Stph. 



Tongue developed. Antennae -J, in <$ with long fine cilia 

 (3), basal joint with pecten. Labial palpi very long, second 

 joint thickened with dense scales, rough beneath, terminal 

 moderately long. Forewings : 7 to termen. Hindwings 1, 

 ovate, cilia \ ; 3 and 4 connate. 



Rather numerous in Australia ; the single European species 

 is a straggler. Imago with forewings suboblong, termen rather 

 oblique. 



1. H. christiernana, L. (1 citriiialis, Sc.) 16-20 mm. Fore- 

 wings bright yellow ; a streak along basal third of costa with 

 two oblique projections, a slender fascia from middle of costa to 

 J of dorsum, connected by two downward-oblique bars with an 

 irregular interrupted subtcrminal fascia, second discal stigma, 

 and a narrow terminal fascia bright crimson. Hindwings grey. 



Kent, Durham, local and scarce ; C. and S. Europe ; 6, 7. 



