ACEONYCTA. 119 



below costa, then strongly dentate, excurved to vein 4, then 

 incurved ; crossed by a strong black streak in submedian fold 

 extending to termen and with a slight streak before and beyond it 

 in discal fold not extending to termea, some slight whitish streaks 

 beyond it on costa ; the veins of terminal area with slight dark 

 streaks; subterminal line absent; a series of blackish points on 

 termen and cilia. Hind wing greyish, suffused with fuscous, the 

 veins darker ; the underside white slightly irrorated with brown, 

 the veins brownish, a blackish discoidal spot and curved minutely 

 waved postmedial line. 



Hub, U.S.A., Colorado, Denver, 2 $ , cotype. Exp. 62-6-1 

 millim. 



3700. Acronycta tritona. (Plate CXXV. fig. 25.) 



Trlcena tritona, Hubn. Ziitr. p. •-!, fF. 107, 108 (1818) ; Sniiih & Dvar, Pr. 

 U.S. Nut. Mus. xxi. ID. 104, pi. ii. f. 9; Smith, Cat. Noct. IST. Am. 

 p. 37. 



Head and thorax violaceous grey tinged with brown ; palpi wliite 

 at ba.se and with black band on 2nd joint; antennae with the basal 

 joint white in front, black behind ; tibige streaked with black ; 

 abdomen whitish, dorsally suffused with reddish brown. Fore wing 

 violaceous grey tinged with reddish brown ; suhbasal line represented 

 by a slight dark striga from costa ; a sinuous black streak in sub- 

 median fold from base to just beyond the antemedial line giving off 

 slight spurs below at middle and above at inner antemedial line ; 

 the line very indistinctly double, oblique, sinuous, almost obsolete 

 on inner area ; orbicular incompletely defined by blackish, small, 

 round ; reniform defined by a blackish lunule on inner side, very 

 indistinct on outer, constricted at middle and with its upper 

 extremity produced ; a very oblique diffused dark bar from costa to 

 reniform ; postmedial line black defined by grey on inner side, bent 

 outwards below costa, then minutely waved, slightly angled in- 

 wards in discal fold and outwards on veins 4, 3, strongly angled 

 inwards in submedian fold, then excurved again, a strong black 

 streak from it to termen in submedian fold; subterminal line 

 absent ; the interspaces of terminal area with very slight dark 

 streaks ; a series of small blackish spots on termen and cilia. Hind 

 wing whitish tinged with ochreous brown, the termen rather 

 darker ; cilia with a fine whitish line at base ; the underside white, 

 the costal area slightly tinged with ochreous. 



Hah. Canada; U.S.A.., New York, Center {Bailey), 2 c? , 2 J , 

 AlhdLWj {Bailey), 1 5 , Mississippi, Florida (Boubleday), 1 5 , Minne- 

 sota, Oregon, Portland, Colorado, Pacific Coast. Exp. 40 millim. 



Larva. Smith & Dyar, Pr. U. S. Nat. Mu9. xxi. p. 105. 



Head brown, dotted with black. Body green; a brown dorsal 

 band, divided on joint 3, broken on joint 6, enclosing a green space 

 on joints 7 to 10 ; hairs short, fine, sparse, several from each 

 tubercle. Food-plant : Vaccinium. — H. G. D. 



