( 563 ) 



the second tonching a small dark cell-spot ; third at three-fourths ; some small 

 black spots along margin ; fringe g^e3^ 



Jlindwing : with the two outer lines only. 



Underside paler, with the markings showing tlirongh. 



Head, thorax, and abdomen pale grey. 



Expanse of wings : c?, 20 mm. ; ? , 22 mm. 



1 cJ, 4 ? ? from Pisco, Pern (Hoffmanns). 



In one ?, which is more heavily dusted with dark atoms, the lines are almost 

 hidden ; on the other hand, in two of the ? ? the lines are all very distinct, 

 and the outer is followed by a broad dark grey band, containing a blackish blotch 

 above vein 1, this band being continued on the hindwing and the undersides 

 as well. 



155. Thamnonoma nubilata spec. nov. 



Forewing : pale smoky grey, with darker smoky grey markings ; two diffuse 

 shades inwardly oblique before middle, followed by a stout linear black cell- 

 mark ; outer line sinuous from two-thirds of costa to three-fifths of inner 

 margin, the marginal third beyond dark smoky grey, with a paler submarginal 

 line visible through it ; the shade preceding it somewhat deeper, and towards 

 costa with some blackish lunular marks ; fringe smoky grey, beyond some small 

 black marginal dots. 



Ilim/wi/iff : paler grey, with a sinuous grey line just beyond middle and 

 the extreme hindmargin darker grey ; a grey cell-spot. 



Underside dull pale grey, with postmedian line and outer margin darker 

 in both wings ; forewing with a dark cell-spot. 



Head, thorax, and abdomen pale grey. 



Expanse of wings : 34 mm. 



1 (S from South Park, Colorado (Oslar). 



Subfamily FIDONIINAE. 

 Hypometalla gen. nov. 



Foreirififf : costa straight, strongly convex before apex; hindmargin curved, 

 oblique. 



Hindiving : with a deep excision in hindmargin between 4 and ; forming 

 a tooth. 



Antennae simple, lamellate ; palpi quite short, not reaching iu front of 

 face ; tongue and frenulum present ; legs stout ; hindtibiae large, with terminal 

 spurs only. 



Neuration : forewings, cell half as long as wing ; discocellular vertical ; 

 first median nervule from about middle, second well before end of cell ; lower 

 radial from decidedly above middle of discocellular, upper from upper end of 

 cell ; 7, 8, 9, 10, 11 all stalked together; 10 and 11, coincideut, anastomose and 

 become coincident with I'Z ; hindwing, costal quite shortly approximated to 

 subcostal, no radial. 



Fringes of both wings deep ; scaling beneath largely lustrous. 



Type Hypometalla mimetaria Feld. (Acidalia). 



