136 Journal New York Entomological Society. [Voi.iv. 
submedian nervure to near the apex ; a small black mark in the cell. Secondaries 
white. Expanse, 36 mm. 
Habitat: Sao Paulo, S. E. Brazil. 
Idalus citrina Druce is congeneric with this species. 
Thalesa, gen. nov. 
g , Antennae pectinated. Primaries broad, produced along the inner maigin 
apex acute; inner angle rounded. Veins 7 > 6 , 9 stalked. Secondaiies as broad as 
long; rounded at the apex and inner angle. Veins 5 and 8 absent; discocellular 
open in the g , forming an angle inwardly in the 9. Vein 7 widely curved above 
vein 6. Veins 3 and 4 from lower angle of cell. 
Allied to Idalus and Eupseudosoma. Type, Thalesa ( Halisidota ) 
seruba H. S. In the ? the wings are long and narrow as in Halisidota . 
Thalesa seruba is usually confounded with Halisidota niveigutta Walk, 
and the females can only be distinguished by the neuration. 
Symphlebia aryllis, sp. nov. 
Body orange yellow. Primaries bright yellow; the outer half of the veins 
brown; the subcostal vein to the end of the cell black, broadly bordered above with 
creamy yellow, containing a long black streak ; a basal creamy yellow space above 
the submedian vein containing a short fine black streak. Secondaries testaceous 
Underneath testaceous. Expanse, 64 mm. 
Habitat: Aroa, Venezuela. 
This species is almost identical with Lophocampa nervosa Feld. 
(Reise Novara, T. 101, Fig. 6.) in its markings, but the neuration is dif¬ 
ferent. 
Castrica, gen. nov. 
Antennae finely pectinated. Primaries long and broad, the outer margin 
slightly produced, between veins 5 and 6; the neuration as in Symphlebia, Felder. 
Secondaries in the g somewhat quadrate with the angles rounded. Vein 2 fiom 
lower angle of cell in the g , before the angle in the 9 ; veins 3 and 4 stalked ; vein 
5 absent; vein 6 usually absent; sometimes present in the 9 as a short branch of 
vein 7. Veins 7 and 8 from upper angle of cell in the g , slightly stalked in the 9; 
a costal spur in the g . 
Castrica oweni, sp. nov. 
Body yellow. Wings yellow heavily shaded with smoky gray through the cell 
towards the apex and submarginally; a clearer spot in the cell followed by a dail 
spot. Secondaries pale yellow. Expanse, g 41 mm., 9 47 mm< 
Habitat: Venezuela, Costa Rica. Named after Prof. E. T. Owen. 
Prumala, gen. nov. 
9 . Antennoe finely pectinated. Primaries large and broad. Veins 4 and 5 fron 
lower angle of cell; 6 from upper angle; 7-10 stalked. Secondaries broad, oval 
veins 3 and 4 from lower angle of cell; vein 5 absent; 6, 7, 8, from angle of upper cell 
