P^DISCA. 47 



towards the ocellated spot ; the third and fifth from the apex^ converging below the fourth ; 

 and the extreme apical one pointing inwards, and forming with the one next to it a hollow 

 triangle ; the ocellated spot is margined on both sides with shining metallic silvery white, 

 most conspicuously on its inner side ; a streak of the same runs across the middle, dividing 

 a black spot below from a slender black line above it : the cilia are ochreous, profusely 

 irrorated with fuscous scales except at the points ; and there is a patch of similar scales above 

 the ocellated spot. Hind wings yellowish grey, slightly dotted with darker grey towards the 

 apex. In the male of this species the fore wings are slightly wider, the apex less acutely 

 produced. Type ? . Expanse of wings 18-19 millims. 



North America. From Mr. Carter^s collection. I have also met with this species in 

 some abundance in California. 



Psedisca Mpunctella. (Plate LXXI. fig. 1.) 



Affa bipunctella, Walk. Cat. Lep. Het. xxvii. p. 202. 

 ~ Psedisca wortMngtoniana, Fernald, Can. Ent. x. p. 83. 



Palpi projecting more than the length of the head beyond it ; the second joint freely 

 clothed, increasing in size towards the apex; apical joint tapering, exposed; pale yellowish, 

 touched with brown towards the base : head and thorax pale yellow ; antennae brownish. 

 Fore wings — rather less than three times as long as wide, with the costa nearly straight, only 

 slightly raised in the middle ; a costal fold in the male, not closely appressed, reaching nearly 

 to the middle, with a tuft of long hairs arising from its base, usually concealed beneath it, 

 but apparently capable of elevation; the apex subacute; apical margin oblique, scarcely 

 convex-^pale straw-yellow, with a small brownish spot at the end of the cell, diffused into a 

 faint longitudinal ferruginous shade before and beyond it. Hind wings brownish grey ; cilia 

 paler. Underside of the fore wings shaded with fuscous. The first pair of tarsi brownish, 

 the others with the abdomen and anal tuft whitish grey ; the thorax and abdomen unusually 

 stout. The proboscis is not " obsolete," as stated by Walker in creating the genus Affa for 

 the reception of this specimen. Type ^ . Expanse of wings 40 millims., from, palpi to anal 

 tuft inclusive 18 millims. 



Fernald gives North Illinois as the habitat of this species. 



Paedisca grandiflavana. (Plate LXXI. fig. 2.) 



Head, palpi, antennae, and thorax pale yellow ; palpi more than twice the length of the 

 head. Fore wings — little more than twice as long as wide, the costa evenly arched, apical 

 margin rather oblique ; male with an appressed subconvex costal fold at the base — yellow, 

 with numerous olivaceous fuscous spots mixed with shining metallic ochreous scales ; these 

 spots seem to follow no fixed method of arrangement, but are somewhat grouped before the 

 middle of the wing below the cell, and have perhaps a tendency to run in lines sloping 

 obliquely outwards from beyond the middle of the costa, and bending parallel with the apical 



