ti. i 



RY R. J. TILLYARD. 293 



^Forewing broadly lanceolate, with three gradate series 



Mega/omina. (Type M. acuminata Banks). 



Forewing narrowly lanceolate, with only two gradate series, 



of which the outer is irregular and incomplete 



Oxyhiella, n.g.(Type O. hrklireJ/l, n.sp. ). 



(Three to six radial sectors in forewing 6. 



I^Only two radial sectors in forewing 7. 



'Forewing with only three radial sectors, one aiising near 

 base, and two close together near middle of wing; recur- 

 rent costal veinlet present 



Pftychohklla Banks. (Type Ps. mnlida Banks). 



Forewing with from four to six radial sectors; recurrent costal 



veinlet absent Micromm Ranib. (Type M. rarkgatun Fabr. ). 



'No distal gradate series in either wing 



NotiohieUa Banks. (Type N. unita Banks). 



A long, distal gradate series pi-esent in forewing, a short one 



in hindwing Carohim Banks. (Type C. puh-he/lus Banks). 



Genus Drrpanepteryx Burni. (Plate xiii., fig.l). 



1 propose to restrict this genus to the PaUvarctic species with 

 the characters given above in the table. Genotype, D. pha- 

 henoides L. 



Genus Drepanacra, n.g. (Plates xiii.-xiv., figs. 12-1 7). 



This genus is proposed for the reception of all but one of the 

 Australian and New Zealand species, hitherto placed in Dre- 

 pancptpryx. Characters as given above in the table. Geno- 

 type, D. hiwiilis McLach. 



Three species of this genus have so far been described, viz., D. 

 binocnla Newman (1838), from "New Holland," D. instabilis 

 McLachlan(1863), from New Zealand, and D. humilis McLachlan 

 (1863), from Australia and New Zealand. McLachlan gave 

 excellent descriptions and figures of both his species. Newman's 

 description of B. hinocula is very brief, and gives no details of 

 the shape or venation of the wings. The date of Newman's 

 specimen makes it fairly certain that it came from New South 

 South Wales, and probably from neai- Sydney. I have seen a 

 large number of specimens of the genus from different parts of 

 Australia, chiefly from the neighbourhood of Sydney, and I have 

 never seen any form that possessed the conspicuous, round spot, 

 encircled by a pale ring, near the posterior angle of each fore- 



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