ir)4 INSECUTOR INSCITL^ MENSTRUUS 



placed in this genus temporarily ; it differs in having the inner 

 side of antennae unipectinate, the outer side serrate. 



Hemipecteros vatsoni, new species. 



Male. — Palpi dark brown fringed with white in front. Frons 

 white with some brown shading behind palpi. Vertex white 

 crossed by an angled fine black line. Collar white shaded with 

 dark brown dorsally and in front. Thorax thickly mottled 

 with brown, black, and a few white hairs, the patagia white 

 with a few dark hairs and dark tips. Abdomen above brownish 

 gray, the last two segments whitish gray. Body below white ; 

 the tibiae mottled with fuscous, the tarsi with brown rings. 

 Fore wings dark brown, the base and termen white ; basal 

 space narrow with a fine yellow streak below cell, followed by 

 a vertical fuscous steel shade and then by a double antemedial 

 lunular fine brown line, also vertical ; a narrow whitish lunule 

 on discocellular proximally edged by a fine dark brown line, 

 distally edged by a faint brown line which extends to costa and 

 inner margin. Terminal white space with a few brown irrora- 

 tions and inwardly edged by a double black line, incurved from 

 apex to tornus, filled in mostly with fuscous steel ; marginal 

 fuscous brown lunules on interspaces ; cilia white with brown 

 streaks at veins. Hind wings whitish thickly suffused with 

 fuscous, the veins brown ; a terminal brown line ; cilia white. 

 Fore wings below white, the anterior half suffused with brown ; 

 the veins brown ; a terminal brown line. Hind wings below 

 white ; a terminal brown line ; the veins terminally irrorated 

 with brown. 



Expanse, 39 mm. 



Habitat. — British Guiana. 



Type in American Museum of Natural History. 



Cotype in U. S. National Museum, No. 23596. 



I take pleasure in naming this species after Mr. Frank E. 

 Watson, of the American Museum. 



Hemipecteros dyari, new species. 



Male. — Body and fore wings as in H. vatsoni Schaus ; the 

 terminal white space more thickly irrorated with brown ; the 



