426 THE LEPIDOPTERA OF CEYLON. 



spotted. Pupa rather narrow, tliorax very oblique; green; abdominal segments 

 with minute darker speckles ; spiracles pink. 



■ Genus THALASSODES. 



Thalassodes, Guenee, Phal. i. p. 359 (1857); Walker, Catal. Lep. Het. B. M. xxii. p. 547 (1861). 



"Wings delicate, almost semi-transparent : forewing triangular, rather short and 

 broad; apex pointed; cell fully half the length; first subcostal close to end of cell, 

 second with five branches, the sixth being thrown off from beyond base of second ; 

 discocellular bent above and below the middle, radial from upper angle ; two upper 

 medians from a footstalk at a short distance beyond the cell, lower fully two-fifths : 

 hindwing short, broad, quadrate ; apex pointed ; cell one-third the length at 

 upper end, half at the lower end; two subcostals at half beyond the cell; disco- 

 cellular very obhque, bent above and below the middle, radial from upper angle ; 

 two upper medians at one-fourth beyond the cell, lower one- third before the end. 

 Body slender ; palpi straight, laxly clothed beneath, second joint in male extending 

 a little beyond the head, third joint slender ; in female both joints longer ; antennae 

 long, in male broadly bipectinated to one-third the tip, branches slender and laxly 

 ciliated, incumbent; antennas in female filiform; legs slender, smooth, hind tibite 

 not thickened, two pairs of short spurs. (T. cUssita and quadraria.) 



Type, T. pilaria, Guen. 



THALASSODES DISSITA (Plate 194, Fig. 2?, la larva). 

 Geometra dissita, Walker, Catal. Lep. Het. B. M. xxii. p. 519 (1861). 



Glaucescent-green. Wings with numerous short slender transverse indistinct 

 chalybeous-white strigas, and a similar indistinct transverse discal slightly sinuous 

 line, which is bent opposite the marginal angle on the hindwing. Shaft of autennse 

 and vertex white ; front of head, tip of palpi, and forelegs above pale ochreous- 

 brown, palpi, body and legs beneath white. 



Expanse 1-h to liir inch. 



Larva with 10 legs; looped; slender; head bifid; a pointed prominence on 

 12th segment; colour reddish above, greenish beneath ; legs red. 



Pupa pinkish, greenish in front ; thoi'ax and abdomen minutely black-speckled. 



" Feeds on Barringtonia " {Thwaites). 



THALASSODES IMMISSARIA. 

 Thalassodes immissaria, Walker, Catal. Lep. Het. B. M. xxii. p. 553 (1861). 



" Male. Pale dull green, suffused with pale luteous. Wings with almost 

 obsolete transverse whitish streaks, and with minute black marginal points : hind- 



