NO. 2132. 7?/?T7»S'/OA' OP THE F^VBFAMILY HYPENINAE—SCHAUS. 385 



brownish straw color; a fuscous shade on discocellular; a finely 

 dentate postmedial hne, outcurved on costa; a dark outer shade 

 from apex to inner margin near tornus, crossed by a pale wavy line. 

 Hind wings below whitish, the costa and termen tinged with brownish 

 straw color; a fine streak on discocellular; postmedial line very 

 fine, indistinct; a double outer, and asubterminalline, better marked, 

 all dentate. 



Expanse. — 36 mm. 



Habitat. — Rio Janeiro. 



Type.—Q'Ai. No. 19870, U.S.N.M. 



On hind wings veins 3 and 4 arc from lower angle; 5 well above 

 angle. 



Genus TIBRACANA Walker. 



Tibracana Walkek, Cat. Brit. Mus., vol. 34, 18G5, p. 1198. 



Female. — Palpi porrect, as long as head and thorax, slender; 

 second joint fringed above; third joint one-fifth the length of second, 

 smoothly scaled. Antennae cihated. Fore wings broad; apex very 

 acute; outer margin obliquely outcurved, almost angled at vein 4; 

 veins 3, 4, 5 equally apart; 6 from near upper angle; 7, 8, and 9, 10 

 from areole; 11 free. Hind wings: Veins 3 and 4 from lower angle. 

 5 well above angle; 6 and 7 from upper angle. 



Type oj genus. — Tibracana xanthialis Walker. 



Also the following species is contained in this genus: 



Tibracana gnoma {Palthis) Schaus, Proc. U. S. Nat. Mus., vol. 30j 

 1906, p. 128. 



Genus BOANA Walker. 



Boana Walker, Trans. Ent. Soc. Lond., 1862, p. 110. 



Male. — Palpi porrect tlii-ee times the length of head; second joint 

 fringed above, less so below; third joint short, acute, fringed near 

 base. Antennae pubescent ciliate; an acute frontal tuft. Legs 

 smooth; fore tibiae with small tuft at joint. Wings broad. Fore- 

 wings: Apex acute, somewhat falcate; outer margin rounded; inner 

 margin rounded; veins 2 and 3 from before middle of cell; 4 and'S 

 from lower angle; 6 from near upper angle; 7, 8 and 9, 10 from areole; 

 11 free. Hind wings: Costal margin rounded ; cell very short; veins 

 3 and 4 on long stalk; 5 above angle; 6 from before upper angle; 7 

 from upper angle. 



Tyj^e of genus. — Boana semialba Walker. The type is a male, 

 not a female as stated by Walker. The species is synonymous with 

 Hypena cataleuca Herrich-Schaffer,^ this latter specific name having 

 priority. 



1 Ausser Eiir. Schmett., p. 69, fig. 452. 

 10600"— Proc.N.M.vol.50— 16 25 



