INSKCUTOR INSCITI^ MENSTRUUS 153 



middle of discocellular ; 6 and 7 shortly stalked, 8 diverging at 

 middle of cell. 



Type of genus Hemipecteros arthemis Schaus. 



Hemipecteros arthemis, new species. 



Male. — Palpi dark brown above, white below. Frons whit- 

 ish gray. Vertex gray with a brown line behind. Collar mot- 

 tled brown and white with a transverse black line. Thorax 

 dorsally fuscous, the patagia gray with some darker hairs and 

 tipped with brown. Abdomen olive gray with brown subdorsal 

 spots on last segment. Body below white; some black brown 

 streaks on tibiae. Fore wings white ; a few gray irrorations at 

 base and an outbent fine black line from base of subcostal to 

 inner margin ; antemedial space suffused with gray to ante- 

 medial line which is double, gray, inangled on costa, well out- 

 curved in cell and above submedian ; medial space with a few 

 gray irrorations ; a large dark brown linear spot on discocellu- 

 lar containing some ochreous shading; postmedial double, red- 

 dish brown or fuscous from subcostal to vein 4 and vertical, 

 below vein 4, finer fuscous and slightly inbent, followed above 

 vein 4 with fuscous shading which expands at vein 6 and is 

 crossed by black streaks on veins 6 and 7 ; a marginal lunular 

 black line, preceded and followed by brown irrorations ; the 

 space between veins 2 and 3 clear white, also a narrower white 

 space between 3 and 4; terminal dark spots from vein 3 to 

 tornus, extending on to the white cilia ; cilia toward apex mot- 

 tled with brown. Hind wings iridescent white ; the veins and 

 inner margin pale ochreous ; some brown irrorations at base 

 of cilia and a small fuscous spot at anal angle. Wings below 

 white, apical gray shading below costa of fore wing and a 

 grayish line on discocellular. 



Expanse, 40 mm. 



Habitat. — British Guiana. 



Type in American Museum of Natural History. 



Cotype in U. S. National Museum, No. 23595. 



This species is very similar in maculation to Malocampa 

 gastriva Schaus, but is much paler. M. gastriva could be 



