PANTANA. THIACIDAS. 445 



991. Pantana interjecta, Swinh. Trans. Ent. Soc. 1891, p. 478, pi. xix, 



fig. a 



cJ . Differs from terminata in being darker, the head, palpi, and 

 COXSB of fore legs bright fulvous. Fore wing with the basal area 

 much darker ; the apical area blacker ; no black spots below median 

 nervure. Hind wing either wholly suffused with fuscous, except 

 a white patch on the outer halt' of costa, the black patch being 

 placed below the apex, or white with the apical area black. 

 Hob. Sikhim ; Khasis. Exp. 46 milliin. 



992. Pantana albifascia, Wlk. Cat. xxxii, p. 325 j C. $ S. no. 872. 

 Orgyia subfascia, Moore, P. Z. S. 1865 ; p. 803. 



$ . Differs from interjecta in the whole hind wing being dark 

 brown. In the form subfascia the band of the fore wing is more 

 or less suffused with fuscous. 

 Hab. Sikhiin. Exp. 42 millim. 



Genus THIACIDAS. 



Thiacidas, Wlk. Cat. v, p. 1027 (1855). 

 Casama, Wlk. Cat. xxxii, p. 611 (1865). 



Type, T. postica, Wlk. 



Range. Throughout India, Ceylon, and Burma. 



Palpi porrect and slender, the 2nd joint fringed with hair. 

 Legs naked, the spurs rather short. Fore wing longer and narrower 

 than in the preceding genera ; the neuration similar. Hind wing 

 with veins 3 and 4 usually stalked and 6 and 7 usually from cell. 



SECT. I. (Thiacidas). Male with the proximal two-thirds of antennae 

 pectinated, the distal part serrate. 



993. Thiacidas postica, Wlk. Cat. v, p. 1028 ; Swinh. P. Z. S. 1885, 



pi. 21, figs. 1, 1 a, 2 ; C. Sf S. no. 1060. 



Drymonia denotata, Wlk. Cat. xxxii, p. 414; C. fy S. no. 1165. 

 Heterocampa nigroscripta, Wlk. Cat. xxxii, p. 423. 

 Cnethocampa curvata, Wlk. Cat. xxxii, p. 429 ; C. fy S. no. 1046. 

 Cnethocampa basifurca, Wlk. Cat. xxxii, p. 430 ; C. Sf S. no. 1044. 



Fig. 307. Thiacidas postica, $ \. 



Head, thorax, and abdomen greyish brown. Fore wing greyish 

 brown, with obliquely curved subbasal and antemedial black double 

 lines angled below median nervure ; a double postmedial line 



