laelia] OCNERIADAE 171 



1. Laelia, Stjyh. 



Terminal joint of palpi exposed. Abdomen not crested. 

 Anterior tarsi more or less hairy ; posterior tibiae with middle- 

 spurs. Forewings : 10 connected with 9. Hindwings: 6 and 7 

 stalked. 



An Indo-Malayan genus of some extent, of which one species 

 reaches Europe. Larva with two long projecting hair pencils 

 on 2, one on 12, and dense erect tufts on 5-8. 



1. L. coenosa, Hb. 38-44 mm. $. Forewings whitish- 

 ochreous, brownish -tinged, especially towards costa ; a very 

 indistinct fuscous discal dot ; a posterior series of several 

 fuscous dots between veins. Hindwings whitish, towards apex 

 bi'ownish-tinged. 



5 . Forewings and hindwings whitish. 



Cambridge to Cheshire, in marshes, always local, now ap- 

 parently very scarce or even extinct ; C. Europe ; 6-8. Larva 

 blackish, hairs yellowish; pencils on 2 and 12 brownish or 

 blackish, tufts on 5-8 yellowish : on reed (Phragmites) and 

 Cladium ; 7-9. 



2. Orgyia, 0. 



Palpi with terminal joint concealed. Abdomen with small 

 subbasal crest. Anterior tarsi rough-haired ; posterior tibiae 

 without middle-spurs. Forewings : 10 connected with 9. 

 Hindwings : 6 and 7 stalked. Wings in 9 rudimentary or 

 absent. 



A genus of some extent and rather general distribution, but 

 mainly inhabiting the Northern hemisphere. Imago flying 

 freely in sunshine. Larva with two long projecting hair-pencils 

 on 2, one on 12, and dense erect tufts on 5-8. 



c? with white subapical spots ; 5 wingless . 1. gonostigma. 



S without white subapical spots ; $ with rudimen- 

 tary wings . . . .2. antiqua. 



1 0. gonostigma, L. 31-33 mm. Forewings deep brown, 

 basal area partly whitish-sprinkled; first line fine, obscurely 

 whitish, irregular ; median dark fuscous, curved ; second dark 

 fuscous, upper half strongly outwards -curved and serrate; a 

 trapezoidal dark fuscous discal spot, obscurely whitish-marked ; 

 a subterminal series of unequal white spots, widely interrupted 

 below middle, preceded by large subcostal and small subdorsal 

 orange spots. Hindwings blackish-fuscous. 9 wholly apterous, 

 antennae serrate. 



