45 i XOCTTJID-'E. 



traces of a double curved antemedial lino with double black points 

 on median nervure and vein 1 ; orbicular an oblique wedge-shaped 

 white mark slightly defined by black except above ; reniform a pale 

 bar defined by blackish scales, expanding into an obscure spot at 

 lower angle of cell and with black spot beyond it at tipper angle ; 

 a rather diffused oblique black medial line from costa to median 

 nervure ; postmedial line double filled in with whitish, bent out- 

 wards below costa, excurved to vein 4, then hardly traceable with 

 black point beyond it on vein 2, some white points with black 

 streaks between them beyond it on costa ; subterminal line very 

 indistinct, pale, with black points on inner side below vein 5 and 

 small black spot below 6 ; an oblique rather sinuous black streak 

 from termen below apex with whitish above it : the terminal area 

 slightly more tinged with brown with pale streaks on the veins : a 

 terminal series of slight black lunules ; cilia yellow. Hind wing 

 whitish tinged with brown, the terminal area suffused with brown ; 

 a dark discoidal luuule and terminal series of slight brown lunules ; 

 cilia white ; the underside white irrorated with a foAv black scales, 

 a black discoidal spot, minutely waved postmedial line incurved 

 below vein 2, and terminal series of small black lunules. 

 Mab. Yei^ezuela, Aroa, 1 J . ^a^3. 26 millim. 



Genus BALSA. „ 



Type. 



JBalsa, Wlk. Can. Nat. & Geol. v. p. 250 (1860) malana. 



Gargaza, Wlk. xxxv. 1733 (1855) tristrigella. 



Nolophana, Grote, Bull. BiifF. Soc. Nat. Sci. i. p. 169 (1873) ... malana. 



Asisyra, Grote, Bull. Buff. Soc. Nat. Sci. i. p. 169 (1873) fristrigella. 



Proboscis fully developed ; palpi obliquely pori-ect, extending about the 

 length of head, the 2nd joint I'ringed above and below with hair towards 

 extremity, the 3rd moderate ; irons smooth with tuft of scales, a ridge of scales 

 between antennae ; eyes large, round ; antennae of male typically bipectinate 

 with moderate branches to apex; thorax clothed almost entirely with scales, 

 the pro- and ruetathorax with spreading crests ; tibia; moderately fringed with 

 hair; abdomen with dorsal crest at base only ; build slender. Fore wing with 

 the apex )-ounded, the termen evenly curved and not creaulate ; veins 3 and .5 

 from near angle of cell ; 6 from upper angle ; 9 from 10 anastomosing with 8 

 to form the areole ; 11 from cell. Hind wing with veins 3, 4 from angle of 

 cell ; 5 obsolescent from just below middle of discocellulars ; 6, 7 from upper 

 angle ; 8 anastomosing with the cell near base only. 



Sect. I. (Balsa). Antennas of male bipectinate ; fore wing with the areole 

 normal. 



4150. Balsa malana. 



Brachytcenia malana. Fitch, 1st & 2nd Eept. Ins. N. York, p. 244. pi. iii. 



f. 6 (1856); Smith, Cat. Noct. N. Am. p. 193; Stand. Cat. Lep. 



pal. p. 362. 

 Balsa ohliquifera, Wlk. Can. Nat. & Geol. v. p. 251 (1860). 

 Nola leodura, Stand. Eom. Mem. iii. p. 178, pi. 10. f. 2 (1887). 



Head and thorax blue-grey slightly mixed with brown ; sides of 



