130 THE LEPIDOPT.ERA OF CEYLON. 



Genus THOSEA. 

 Thosea, Walker, Catal. Lep. Het. B. M. v. p. 1068 (1855). 



Fore wing almost straight along the costa, exterior margin oblique, convex, posterior 

 margin convex ; first subcostal straight, emitted at one-third and second from near end 

 of the cell, third from the end, fifth from below the third immediately beyond the 

 cell ; upper discocellular erect, straight, lower bent, concave ; a discoidal veinlet 

 emitted within the cell from lower discocellular; upper radial from angle in middle of 

 discocellulars, lower radial from angle close to lower end of the cell ; median veins 

 equidistant, lower at two-sixths before end of the cell ; submedian much curved ; 

 internal vein with a lower branch at one-third from its base : hindwing short ; exterior 

 margin convex ; subcostal arched at the base and slightly joined to costal ; two 

 subcostal branches on a footstalk immediately beyond end of the cell ; discocellulars 

 bent below the middle, emitting a discoidal veinlet within the cell from the angle ; 

 radial from lower discocellular above end of the cell ; lower median branch at beyond 

 one-third before end of the cell ; a submedian and two internal veins. Body thick ; 

 palpi porrect, projecting half beyond the head, thick and truncated in front in male, 

 third joint minute ; antennge in male with short bi'oad branches to the tip, simple in 

 female ; legs thick, compactly pilose, middle and hind tibise spurred. 



Type, T. unifascia. 



THOSEA CERVINA (Plate 129, Fjg. 2, S, 2a, larva). 

 Thosea cervina, Moore, Annals of Natural History, 1877, p. 348, (J. 



Male. Upperside greyish-fawn colour : forewing with a transverse discal narrow 

 slightly curved dark brown band; a black spot at end of the cell. Underside 

 uniform brown ; a white spot at base of antennae and on fore tibiae. 



Expanse If inch. 



Larva limaciform, convex above, green, with a yellowish bordered dorsal 

 irregular-shaped band, which is linear and purplish anteriorly, dilated across the 

 middle and cleft posteriorly, and purple streaked, the middle angles red; with some 

 anterior and posterior subdorsal spinous tubercles, a lateral row, and a sublateral row 

 of longer tubercles. Cocoon purple-brown, oval. 



" Food various." {Dr. TInvaites.) 



THOSEA DUPLEXA (Plate 131, Fig. 3, ?). 



Female. Dark ferruginous-brown : forewing sparsely irrorated with black 

 scales ; a black scaled spot at end of the cell, and an obliquely transverse discal 

 double dark brown line : hindwing, body, and legs ferruginous-brown, irrorated with 

 black scales. 



Expanse, ? If inch. 



"Ceylon." (Dr. Thwaites.) In Coll. F. Moore. 



