Some apparently new Species and Forms of Noctnidae 205 



wing with a slight rufous subterminal shade, a fine black discal spot 

 and curved postmedial line angled inward behind M\ 



Manusela, 6,000 feet, October to December, 1919, one ? . 



Although unmistakably an Eriopus, this species is very distinct, and 

 in the absence of the 3 it is impossible to decide its probable position 

 in the genus. Just possibly allied to E. chloriza Gn. 



STICTOPTEBINAE. 



14. Odontodes aleuca Gn. seranensis subsp. nov. 

 $ ? , 40 — 45 mm. 



Differs from aleuca aleuca (from India) in the rather narrower and 

 more elongate fore wing, the chequered fringe of hind wing (uniformly 

 white except towards apex in typical aleuca), the scarcely-paler inter- 

 spaces of hind wing above and the much darker underside of both wings. 

 On the underside aleuca seranensis also differs from aleuca aleuca in the 

 presence of a slight pale shade distally to the postmedial line on both 

 wings, in the obsolescence of the discoidal patch on fore wing and in 

 the discoidal spot on the hind wing being larger and more diffused than 

 in the typical form. 



Manusela, 6,000 feet, October to December, 1919, seventeen $ 3~ , 

 fourteen ? ? . 



A single specimen from Sarawak, in coll. Joicey, seems almost 

 nearer to this form than to the Indian one. 



Except in the elongate fore wing, this subspecies forms a transition 

 to Odontodes metamelaena from New Guinea, which there seems little 

 reason to doubt is in reality another aleuca subspecies. 



Genus Stictoptera. 



It is hoped later on to publish a paper on the genitalia of this very 

 difficult genus, a careful study of which is being undertaken at the Hill 

 Museum. From the results of those studies, as at present understood, 

 it seems probable that a large number of what are at present known as 

 " species " may have to sink ; but in the meantime it has seemed best 

 to give names to the various apparently new forms and races occurring 

 in the present collection and to assign them later on a more definite 

 standing as species, subspecies or aberrations. 



14 



