HYPSlDJi. 495 



Family HYPSID.E. 



Proboscis present. Palpi smoothly scaled ; the third joint long 

 and naked. Legs smooth ; mid tibiae with one pair of spurs, hind 

 tibiae with two pairs. Frenulum present. Fore wing with vein 1 a 

 separate from 1 b ; 1 c absent ; 5 from near the lower angle of cell. 

 Both sexes with the membrane above inner margin forming a 

 cavity with a ridge above it, probably for producing stridulation by 

 friction against a ridge of membrane below the costa of hind wing. 

 Hind wing with veins 1 a and b present, 1 c absent ; 5 from near 

 lower angle of cell ; 8 free from the base and connected by a bar 

 with 7 at middle of cell. 



Larva with all the fore legs present, and sparsely covered with 

 long hairs. 



Cocoon slight. 



Fig. 329. Larva of Hypsa alciphron. i. (From Moore. Lep. Ceyl. ii. 

 p. 102, fig. 1 b.) 



Key to the Genera. 



a. Fore wing with no areole, veins 6 and 7 stalked . 1. EUPLOCTA, p. 495. 



b. Fore wing with vein 7 from an areole. 



a'. Palpi with the 2nd joint reaching above [p. 496. 



vertex of head 2. PERIDBOME, 



b'. Palpi with the 2nd joint reaching vertex of 



head. 

 a 2 . Hind wing with veins 6 and 7 from angle of 



cell 3. HYPSA, p. 498. 



b 2 . Hind wing with veins 6 and 7 stalked 4. DIGAMA, p. 504. 



Genus EUPLOCIA. 

 Euplocia, Siibn. Verz. p. 172 (1818). 



Type, E. membliaria, Cram. 



Range. Burma ; Siain ; Andamans ; Java ; Philippines. 



Palpi upturned ; the second joint reaching vertex of head, the 

 third long and slender. Antennae minutely ciliated. Fore wing 

 with a costal fold on upperside in male usually containing a glandular 

 tuft of long hairs ; veins 6 and 7 stalked ; 8 and 9 stalked ; no 

 areole. Hind wing with veins 6 and 7 from the angle of cell. 



