152 INSECUTOR INSCITI^ MENSTRUUS 



medial outcurved brown line from a darker point on costa, 

 edged with black from vein 2 to inner margin, also shaded with 

 moss green at submedian and preceded by a shorter black line ; 

 a double black line filled in with brown to vein 2, and with 

 whitish gray below it, closely follows the medial line, and at 

 median is outbent to inner margin ; on the proximal side of this 

 double line a wavy black line extends from vein 2 toward the 

 middle of inner margin and on the distal side there is another 

 parallel line from vein 2 ; these four lines are all inbent on 

 submedian ; an interrupted white streak on discocellular with a 

 black point at vein 6 ; an interrupted postmedial, lunular, black 

 line marked with black streaks on veins, followed by some 

 small brownish spots and a narrow black shade from vein 5 

 to costa; a subterminal black line crossing below costa a nar- 

 row oblique brown shade; an interrupted terminal black line 

 forming in places paired black spots at veins ; cilia whitish 

 gray crossed by a dentate brown line. Hind wings gray 

 brown, the base with white scaling; cilia white shaded with 

 brown at base. Fore wings below dark grayish brown ; the 

 costa and base of cilia narrowly white ; a large white spot at 

 apex. Hind wings below white, the outer margin broadly 

 dark gray brown, produced inwardly below vein 6 ; cilia white. 



Expanse, 38 mm. 



Habitat. — British Guiana. 



Type in American Museum of Natural History. 



Cotype in U. S. National Museum, No. 23594. 



Hemipecteros, new genus. 



Male. — Antennae bipectinated on inner side, fasciculate on 

 outer side. Palpi obliquely ascending not reaching above frons, 

 moderately scaled, the third joint short. Fore wings : the outer 

 margin rounded, oblique. Vein 2 well before lower angle of 

 cell; 3 and 4 separate from lower angle; 5 from middle of 

 discocellular; areole long and narrow, vein 6 from middle, 

 7, 8 from end of areole; 10 from close to end of areole. 

 Hind wings sorrtewhat triangular ; costal margin rounded ; vein 

 2 from before lower angle of cell ; 3 and 4 separate ; 5 from 



