516 GEOMETRID^. 



mark and indisfinct slightly curved postmedial green line, retracted 

 to costa of fore wing and to inner margin of hind wing. Under- 

 side with the hind wing and inner area of fore wing whitish. 

 Hab. Nilgiris. Exp. 32 nrillim. 



4137. Thalera viata, Moore, Lev. Ceyl iii, p. 431. pi. 195. fig. 6; 



C. 8f S. no. 3495. 



$ . Yellow-green. Fore wing with nearly straight green-edged 

 white ante- and postmedial lines. Hind wing with dark line on 

 discocellulars and slightly curved green-edged white postmedial 

 line. Underside white. 



Hab. Ceylon. Exp. 24 millim. 



4138. Thalera pallescens, Umpsn. III. Het. viii, p. 108, pi. 151, fig. 3. 



White ; the frons, thorax, and abdomen suffused with grey-green ; 

 wings semihyaline, with broad medial grey-green band bounded 

 by the ante- and postmedial lines which are white, the former 

 obliquely sinuous on fore wing, oblique and straight on hind 

 wing, the latter sinuous on fore wing and curved on hind wing ; 

 slight white marks on discocellulars ; slight grey-green diffused 

 patches beyond the postmedial line of each wing. 



Hab. Nilgiri plateau. Exp. 32 millim. 



C. Antennae bipectinate in both sexes. 



4139. Thalera liliana, Swinh. Trans. Ent. Soc. 1892, p. 7, pi. 1, 



fig. 2. 



$ . Blue-green ; frons ochreous ; abdomen ochreous, except the 

 basal segment ; some crimson on dorsum. Fore wing with the 

 costa ochreous, irrorated with fuscous ; a waved antemedial white 

 line ; both wings with lunulate postmedial white line ; cilia white, 

 tipped with crimson, and with ochreous and fuscous specks at the 

 veins. Underside white. 



Hab. Khasis. Exp. 54 millim. 



SECT. II. (Thalera}. Hind wing of male with the outer margin 

 excised between veins 6 and 4 ; veins 3, 4 stalked ; hind 

 tibiae of male dilated with a fold and tuft and two pairs on 

 spurs in the Indian forms ; not dilated and with one pair of 

 spurs in the European. 



A. Hind wing of female excised. 



4140. Thalera chrysolineata, Wlk. Cat. xxvi, p. 1621; Moore, Lep. 



Ceyl. iii, pi. 196, fig. 4; C. 8f S. no. 3406. 



Olive-green ; frons rufous ; vertex of head white ; abdomen with 

 dorsal white spots; wings with numerous irregular white spots 

 often conjoined into bands. Fore wing with spots at base and 



