PYRALlDjE. 



Genus THYSANOIDMA. 

 Thysanoidma, Hmpsn. 111. Set. viii, p. 142 (1891). 



Type, T. octalis, Hmpsn. 



Range. Assam; Nilgiris. 



$ . Palpi upturned, the 2nd joint not reaching vertex of head r 

 and with a long pointed tuft of hair in front at extremity, the 3rd 

 well developed and acuminate ; maxillary palpi filiform ; frons 

 rounded; antennae of female minutely ciliated; legs long and 

 slender, the spurs nearly equal. Fore wing with veins 3, 4, 5 

 from angle of cell ; 7 straight, and well separated from 8, 9, 10 - r 

 11 from angle of cell. Hind wing with the outer margin much 

 excised below apex, and with three indentations towards anal 

 angle; the inner and outer margins towards anal angle fringed 

 with long spatulate cilia of varying lengths ; veins 3, 4, 5 from 

 angle of cell ; 6, 7 from upper angle. 



4657. Thysanoidma octalis, Hmpsn. III. Het. viii, p. 142, pi. 156. 

 fig. 19. 



$ . Head and thorax black and grey ; abdomen fulvous yellow. 

 Fore wing smoky black ; traces of an antemedial pale line ; a pale 

 sinuous medial line, with a yellow patch beyond it, from costa to 



lower angle of cell, followed 

 by a deeper black patch ; the 

 pale postmedial line nearly 

 straight from costa to vein 2, 

 then retracted to lower angle 

 of cell, and excurved again ; 



Fig. IW.-Thysanoidma octalis, $ . f . * he a P-' al area y ellow > becom - 



ing white at apex ; some dark 



marginal specks and a white spot above outer angle. Hind wing 

 orange-yellow; the basal area smoky black, bounded by a pale 

 sinuous antemedial line ; a large black reniform discocellular spot ; 

 the postmedial pale line defined by black suffusion on inner side, 

 curving round from costa to below lower angle of cell, then 

 obsolete ; some white spots on the margin. 



Hob. Margharita, Assam ; Nilgiris. Exp. 16 inilliin. 



Genus AMBIA. 



Ambia, Wlk. Cat. xix, p. 9o7 (1859). 



Opisthedeicta, Wai-r. A. M. N. H. ((5) vi, p. 478 (1890). 



Type, A. ptolycusalis, Wlk., from Borneo. 



Itancje. Neotropical region; India; Ceylon; Burma; Malayan 

 subregion. 



Palpi upturned, the 2nd joint reaching vertex of head and 

 nearly naked, the 3rd long and acuminate ; maxillary palpi filiform 

 and of moderate length ; frons rounded ; legs of moderate length, 

 the spurs long and equal. Fore wing with the apex slightly 



