HETEROCERA. 



231 



base. Underside : forewing pale to warm buff, strongly suffused with greyish 

 olive to fuscous with a tinge of bay ; a buff discocellular lunule edged on both 

 sides with fuscous black ; postmedial fascia indicated in fuscous black with a 

 spot opposite the end of the cell ; apical patch and beginning of subterminal 

 fascia as on upper side ; fringe infuscate ; hindwing similar, but with a pro- 

 nounced blackish brown triangular discocellular spot, succeeded by a smaller 

 spot in the postmedial fascia, and an accentuation in the subterminal fascia ; 

 the fasciae all fairly distinctly indicated ; fringe infuscate. Expanse 36 mm. 

 Holotype $. Upolu : Malololelei, 2,000 feet, 6.vii.l924. 



Mormecia, gen. nov. 



Proboscis fully developed ; palpus upcurved, the second segment long, 

 curved and reaching level of vertex of head, the third segment half as long as 

 second, almost straight, acuminate, and directed obliquely backwards over the 

 head ; frons smoothly scaled, with hardly any tufting above ; antenna of 

 with stout scape, the shaft with proximal third incrassate, with a pronounced 

 kink before the distal two-thirds, and furnished with fine short bristles and cilia, 

 of $ simply furnished with fine short bristles and cilia ; in <$ femora and tibiae 

 fringed with long hair-scales ; in $ the mid and hind tibiae only with the proximal 

 third fringed above with short hair-scales ; abdomen without crests. Forewing 

 in $ with the costa almost straight from base to apex, but slightly bowed in the 

 proximal third ; in $ less straight but without the proximal bow ; veins R 2 , 

 R 3 , R 4 stalked, arising before upper angle of cell, R 5 from upper angle, Mi from 

 near upper angle, M 2 and M 3 arising close together from lower angle of cell, Cux 

 from before lower angle, Cu 2 from cell beyond two-thirds. Hindwing with vein 

 Rs arising just before upper angle of cell, at which Mx arises, M 2 from close to 

 lower angle, M 3 and Cvl X from lower angle, Cu 2 from cell at two-thirds. 



Genotype : Mormecia lachnogyia Tarns, sp. nov. 



89. Mormecia lachnogyia, sp. nov. (Plate VI, fig. 20 ; Plate VII, fig. 8). 



Palpus brownish olive, with some light buff on inner side of second seg- 

 ment proximally ; antenna brownish olive ; head brownish olive ; thorax 

 brownish drab ; abdomen brownish olive ; pectus warm buff ; legs brownish 

 olive, heavily tufted, the foreleg with a large spreading tuft of warm buff scales 

 and hair-scales ; underside of abdomen brownish olive streaked with olive buff. 



