238 



Genus MONOSCHALIS. 



Monoschalis, Hmpsn. III. Het. ix, ined. 



Type, M. virescens^ Hmpsn. 



Range. Ceylon. 



d 1 . The antennae bipectinated. Palpi short and porrect, Tibiae 

 with no spurs. Fore wing with veins 8 and 9 stalked. Hind 

 wing with vein 6 present. 



495. Monoschalis virescens, Hmpsn. HI Het. ix, ined., pi. 157, 

 fig. 11. 



<J . Black, shot with green : abdo- 

 men with 4th and 5th segments yellow. 

 Fore wing with a hyaline spot in end of 

 cell, a large spot below the end ; a bifid 

 submarginal and small spot near outer 

 angle. 



Hob. Colombo, Ceylon. Kcp. '2*2 

 millim. 



Fig. 153. Monoschalis 

 virescens, <$ . \. 



Genus THYRASSIA. 

 Thyrassia, Butl. Journ. Linn. Soc., Zool xii, p. 355 (1870). 



Type, T. subcordata, AVlk. 



liai\fje. Plains of ]S T . India, S. India, and Ceylon. 



Antennae bipectinated in both sexes, more heavily in the male 

 than the female. Palpi short and porrect. Tibiaa with no spurs. 

 Fore wings with veins 8, 9, and 10 stalked together. Iliud wing 

 with all the veins from the cell, 8 absent. 



496. Thyrassia subcordata, wilt. Cut. i, p. 132 ; C. # S. no. 280 ; Bull. 



III. JLt, i, p. 19, pi. vii, fipr. 5. 

 Thyrassia aurodisca, Hmpsn. III. Hot. viii, p. 44, pi. cxxxix, fig. 10. 



Frons, collar, metathorax, and lateral 

 streaks on each abdominal segment orange. 

 Fore wing dark brown ; a yellowish or 

 whitish hyaline spot at end of cell, a trifid 

 spot below it, a bifid or trifid subapical 

 spot. Hind wing with an orange patch 

 occupying the basal inner area and curving 

 up to the costa beyond the cell. 



T. aurodisca, the southern form, has the orange of hind wing 

 more extensive and the border narrower. 



Hob. Plains of N. India, S. India, and Ceylon. Evp.,. <$ 24, 

 $ 26 millim. 



Fig. 154. Thyrassia 

 subcordata, <$ . \. 



