92 



Two specimens from Glenwood Springs apparently are the same 

 species being but slightly paler and more contrastingly marked. 



Form edwardi N. & D. apparently represents simply a nearly im- 

 maculate form of true hertholdi, probably an aberration. The unique 

 type, "Colo., Bruce", appears similar to the type of hertholdi in wing- 

 shape, size, habitus, and thoracic vestiture. 



COMADIA BERTHOLDI race FUSCA UOV, 



Twelve specimens from Durango, Colo, are apparently hertholdi, or a very 

 closely allied species, but possess the primaries more heavily powdered with 

 brownish-black; the maculation heavier and darker, practically blackish with 

 brown tints only occasionally showing. Secondaries fuscous-brown. To this 

 darker form which the authors consider a local race but which may be a dis- 

 tinct species the above name is applied. 



Expanse: 34-35 mm. 



Type locality: Durango, Colo. 



Number and sexes of types: Holotype S, 1-7 June; 9 $ Paratypes, 24 

 May— 15 July, Barnes Collection ; 1 S Paratype, 1-7 June, Brooklyn Museum. 



COMADIA INTRUSA sp. HOV. 



So closely allied to hertholdi that the description would read almost the 

 same for both species. In general the insect appears somewhat larger and 

 heavier bodied, and the suffusion between the median nervules more pronounced, 

 brownish as in typical hertholdi, while between veins 2 and 3 there is a con- 

 spicuous darkening and concentration of the suffusion, creating in most in- 

 dividuals a distinct blotch which is independent of any mark on the lower dis- 

 cocellular vein. Secondaries brown. 



The thoracic vestiture is composed of brown spatulate hair-like scales 

 which are, however, considerably broader than in all Colorado material exam- 

 ined; a fact which, coupled with the heavier appearance of the insects, leads 

 the authors to place it as a distinct species. 



Expanse: S 37-41 mm., ? 37-47 mm. 



Type locality: "Southern Cala." 



Number and sexes of types: Holotype $, Allotype ?, 4 $ 99 Para- 

 types, Barnes Collection; 1 <J 1 9 Paratypes, Brooklyn Museum. 



The majority of specimens may be separated by the following key: 



I. Thorax clothed with scales engelhardti 



II. Thorax clothed with hair-like scales; 

 A. Primaries with some reticulations; 



a. Appearing whitish dolli 



b. Appearing gray subterminata 



