110 THE LEPIDOPTEEA OF CEYLON. 



Larva purplish-black, naked ; two dorsal conical protuberances on fifth to ninth 

 segment, subanal segment tumid; two angular processes from anal segment; anal 

 prolegs obsolete ; head large ; second and third pair of forelegs long ; anal segments 

 carried erect. Cocoon silky, ferruginous. Pupa purplish-black. 



" Feeds on Cassia fistula." (Thivaites.) 



Subfamily NOTODONTIN^. 

 Larva with sixteen legs, elongated, naked, attenuated anteriorly, generally with 

 a single or double conical dorsal prominence on twelfth segment ; or subpilose, with 

 a dorsal prominence on fifth and twelfth segment, or with several dorsal prominences. 

 Cocoon of a slight texture. 



Genus NETRIA. 

 Netria, Walker, Catal. Lep. Het. B. M. vi. p. 1504 (1855). 

 Forewing elongated, narrow; costa regularly arched, apex pointed, exterior 

 margin oblique, slightly convex ; clothed beneath with longish hairs from the costa ; 

 first subcostal emitted at one-eighth before end of the cell, second from end of the 

 cell, quadrifid ; cell wide, extending half length of the wing : discocellulars bent 

 outward in the middle, concave at each end; apparently a very slender forked 

 discoidal veinlet emitted within the cell ; upper radial from end of cell in a line with 

 subcostal, lower radial from middle of discocellular ; three median branches, upper 

 branch from end of cell, middle from about one-eighth, and lower at one-third before 

 the end; submedian much curved downward from its base: hindwing short, broad, 

 clothed from the base with hairy scales ; apex convex ; costal and subcostal vein 

 joined from their base to half length of the cell, costal vein thence extending to apex; 

 two subcostal branches on a footstalk one-fourth beyond the cell; cell extending 

 nearly half length of the wing at its upper end and to nearly two-thirds at its lower 

 end ; apparently a very slender discoidal veinlet emitted within the cell ; discocellular 

 very oblique, slightly concave; radial from about one-third before its upper end; 

 three median branches, upper from acute angle at end of the cell, middle branch at 

 one-half and lower at one-third before the end ; submedian and internal vein nearly 

 straight. Body large, pilose, abdomen extending beyond hind wings ; thorax and 

 head crested above ; palpi porrect, extending slightly beyond the head, somewhat 

 clavate, second joint compactly clothed, long, third joint minute, conical; femora and 

 tibia densely pilose ; antennse broadly bipectinated to near tip in male, less so in female. 



NETRIA VIRIDESCENS (Plate 120, Fig. 2, J", 2a, larva). 

 Netria viridescens. Walker, Catal. Lep. Het. B. M. vi. p. 1504 (1855); Moore, Catal. Lep. Mus. 

 E. L C. ii. p. 372, pi. 11a, fig. 3. 



Forewing dull greenish-brown, crossed by two black basal bluntly-sinuous lines, 



