198 » THE CANADIAN ENTOMOLOGIST. 



DESCRIPTION OF A NEW HADENA FROM THE WHITE 



MOUNTAINS. 



BY H. K. MORRISON, CAMBRIDGE, MASS. 



Hadena ancocisconensis (nov. sp.) 



Expanse 40 m. m. Length of body 16 111. m. 



Eyes naked, with short lashes. Antennae in the female simple. Palpi 

 gray, the third joint very short. Collar whitish beneath, above bearing a 

 transverse, partially interrupted black line. Thorax mingled light and 

 dark gray ; no prothoracic tuft, metathoracic tuft low and longitudinally 

 furrowed ; sides of the thorax deep black and very conspicuous. Abdo- 

 men light gray, with several slight dorsal black tufts, and one very strong 

 one, tipped with white on the third segment. Tibiae unarmed. Anterior 

 wings having the basal space light gray, whitish at the base, and contrasting 

 with the thorax and a black acute basal dash ; inner margin of the wings 

 white near the base, this white space is bounded above by another basal 

 dash, finer than the one last mentioned ; median space darker gray ; the 

 ordinary spots are of the usual shape, faintly outlined in black and filled 

 with light gray, which extends around and beyond them, but less 

 distinctly ; interior line simple, black and very acutely dentate, forming 

 inferiorly two very long teeth, the upper of which is connected by a black 

 dash with the exterior line ; the latter is well removed towards the outer 

 margin, obsolete above, below it appears as an oblique black line, fol- 

 lowed by a distinct white shade, this is followed by another thicker black 

 line, slight traces of the subterminal line otherwise obsolete, and another 

 white dash before the angle, enclosing a black spot ; a series of black 

 dashes in the terminal space, three of which are united, forming the usual 

 W-shaped marking ; the white subterminal shade line extends sometimes 

 around this marking. Fringes gray, with white points at the terminations 

 of the nervules. Posterior wings gray, darker towards the margin. 

 Beneath gray, nearly unicolorous, without the usual median line. 



Bab. Glen Valley, Mt. Washington, N. H. 



Described from a specimen in my collection, taken at sugar in August. 



The alternation of black and white at the inner angle makes this 

 species very easy to recognize ; it differs in this respect from all other 

 members of the genus. 



