424 THE LEPIDOPTERA OF CEYLON. 



CUSUMA. 



Cusiima, Moore, Proc. Zool. Soc. 1879, p. 415. 

 Differs from Buscliema {E. milltarls, Linn.) in tlie abbreviated and trigonal 

 shape of the forewing, the exterior margin being less oblique and the posterior 

 maro-in shorter ; neuration similar, the discocellulars, however, are less acutely 

 angled and not curved posteriorly : hindwing also shorter and more convex exteriorly. 

 Thorax clothed with shorter and less shaggy hair. Palpi smaller, less pilose, terminal 

 joint shorter and slightly clavate. 



CUSTJMA VILIS (Plate 189, Fig. 4, S)- 

 Euscliema viUs, Walker, Catal. Lep. Het. B. M. ii. p. 408 (1854). 

 Pnvplish-brown (probably purplish-black when fresh) ; forewing with a semi- 

 hyaline curved discal macular band, a small spot beyond upper end of cell, a large 

 oblique spot in middle of the cell, and a small spot near its base : hindwing chrome- 

 jellow, with a purplish-brown marginal band traversed by a zigzag yellow line along 

 its inner border from the anal end. Abdomen yellow, with purple-brown bands ; tip 

 of palpi, and legs above purple-brown ; antennae black. 

 Expanse 2^ inches. 



CUSTJMA LIMBATA (Plate 189, Fig. 5, 5). 

 Cusuma limbaia, Moore, Proc. Zool. Soc. 18V9, p. 415. 



Female. Upperside : forewing dark purple-black, with a bluish-white diaphanous 

 oblique subapical spot crossed by two veins, and a small oblique spot within the cell ; 

 hindwing golden-yellow, with a broad wavy-bordered purple-black marginal band, 

 which extends narrowly along anterior margin and terminates in a spot at its base. 

 Thorax, head, antennjB, dorsal bands, and anal segment, purple-black. Abdomen 

 above and beneath, and sides of thorax, golden yellow. Legs black above, yellow 

 beneath. Underside of wings as above. 



Expanse 2| inches. 



Tamily GEOMETRID^. 



Wings smooth, generally entire, alike in both sexes. Forewing mostly acute or 

 subfalcate at the apex. Hindwing rounded or angular in the middle : radial vein 

 present. Body moderately stout ; palpi generally straight, slender, sometimes varying 

 in the sexes ; antenna3 of male very generally pectinated, with filiform tips, simple 

 or crenulated in the female ; abdomen sometimes crested ; legs smooth, rarely long, 

 not villose, hind tibife in some species with a single pair of spurs. 



Larva looped in walking, elongated, stiff in repose, often rough; head generally 



