NATURAL SCIENCES OF PHILADELPHIA. 419 



Expanse 40 mm. Newtonville, Mass., Mr-. Roland Thaxter, 

 June 24. 



Heliophila lapidaria, n. s. 



%. ?. A species allied to phragmitidicola and adjuta, with 

 immaculate white secondaries in both sexes. The fore wings 

 resemble pallens and adjuta., but are less j-ellowish ; they are 

 terminally interspaceally darker shaded, the veins whitish. The 

 shade under the median vein is not black, nor darker than the 

 terminal shades. There is a black cellular dot, and the t. p. line 

 is indicated by two disconnected dots as in pallens, adjuta, not 

 by a series of points as in phargmitidicola, and adonea. A termi- 

 nal series of points on the white hind wings above, noticeable on 

 both wings beneath. Collar with three lead-colored lines. The 

 species is a little slenderer than phragmitidicola, and wants the 

 terminal shading to the hind wings. 



Expanse 34 to 36 mm. Buffalo, N. Y. 



I have discovered in examining a collection of Canadian Noc- 

 tuidse named by the late Mr. Francis Walker, that multilinea, 

 Walk., is the same species as commoides, Guen. 



Helotropha atra, Grote, Proc. Acad. N. S. Phila. 18?4, 200. 



% . ?. Both sexes of this form have been taken b} 7 Mr. Win. 

 Saunders, London, Canada; it has also occurred to Mr. Lintner, 

 near Albany, N. Y. It diners from reniformis, by the smaller, 

 compact, whitish reniform, this, with the concolorous brownish- 

 black fore wings, gives the moth a resemblance to Hadena sputa- 

 trix, Grote. The faintly expressed ornamentation resembles that 

 of Helotropha reniformis, Grote. I believe it to be a distinct 

 species. 



Hadena diversicolor. 



Demas diversicolor, Moit. Proc. Bost. S. N. H., 132, 1874. 



I have examined the ? type of this species belonging to Mr. 

 Thaxter. The position of the accessory cell is not as in Demas 

 (Lederer's Taf. 1, fig. 3). The palpi are not "short and hanging," 

 nor is the head "drawn in" anj 7 more than in Hadena finitima, 

 for example. It may seem "a wide leap," but the species is a 

 Hadena and not a Demas, and this latter genus is not as yet 

 shown to occur in North America. The ornamentation strongly 

 resembles that of Hadena modica, and the structure and the 

 characteristic ringlets beneath on the disk, replacing the usual 



