146 INSECUTOR INSCITl^ MENSTRUUS 



NOTE ON HEMIHYALEA AND SOME SPECIES OF 



AMASTUS 



(Lepidoptera, Arcliida) 

 By HARRISON G. DYAR 



The genera Hemihyalea and Amastus differ only in that in the for- 

 mer " vein 3 of fore wing arises at or near the angle of the cell," while 

 in the latter it is distant from the angle. The species are not sharply 

 marked by this character, as in some vein 3 is intermediate in position, so 

 that doubt can arise. I think that cornea Herrich-Schaffer, under which 

 Hampson wrongly sinks mansueta H. Edwards, rhoda and daraba 

 Druce, will find a better place in Amastus. Also ergana Dognin, which 

 Hampson places in Hemihyalea, together with perergana amd tenuimargo 

 of Dognin, described since Hampson's work. On the other hand, proba 

 Schaus, placed by Hampson in Elysius, and edaphus Dyar, described 

 by me in Amastus, clearly belong in Hemihyalea. The species of this 

 genus sepeurate as follows, taking Hampson's table as a basis (Cat. Lep. 

 Phal.,iii, 130, 1901). 



Abdomen crimson or reddish. 



Male antennae strongly bipectinated. 

 Front of head white. 



Fore wing purplish throughout .... tristis Rothschild 



Fore wing hyaline with moderate brown border brunnescens Rothschild 

 Front of head concolorous with thorax. 



Fore wing distinctly hyaline, at least over disk, unhanded. 



Thorax and margins of fore wing dark brown . fusca Rothschild 

 These parts pale brown . . var. columbiana Rothschild 



Fore wing subhyaline to opaque, generally showing markings. 

 Hind wing largely or entirely suffused with crimson. 



Fore wing ocher-brown, the markings slight . annario Dyar 

 Fore wing ocher-brown, irrorate and with pale spots 



surrounded with blackish dots . ochracea Rothschild 

 Fore wing largely blackish ; bands represented by pale 



spots on costa and margin or absent . nimhipicta Dyar 

 Hind wing crimson along inner area, seldom extending above 

 median vein. 

 Abdomen with dorsal black patches . edwardsii Packard 

 Abdomen without dorsal black patches. 

 Disk of fore wing subhyaline. 



Bands of fore wing more or less distinct. 

 Bands brown ; termen brown as if burnt, 



but the color diffused inward daraba Druce 



