38 Journal New York Entomological Societv. [Voi. x. 



or it may become much more distinctly emphasized giving rise to 

 greater contrast, or the entire center may be discolored, either reddish 

 or bright yellow. 



Altogether there is much more variation than in many other 

 species that look less alike, and there is good evidence of a beginning 

 racial separation. The simplicity and uniformity of the sexual 

 structures tend to prevent fixity in such variations as do occur, and 

 allow only such differences as the relative size of the sexes to become 

 at all permanent. 



Feltia edentata, sp. nov. 



Has the general appearance and size of tficosa Lintner. Head smoky above, 

 reddish-gray inferiorly. Palpi smoky at the sides. Collar smoky brown from base to 

 a black line above the middle then with a whitish, brown and whitish line to the tip. 

 Patagise gray, and brown mottled ; disc of thorax brown, posterior tuft grayish. 

 Primaries smoky brown, relieved by reddish-gray shadings as follows : over the sub- 

 costal vein to the cell, not involving the costa which remains smoky ; over the median 

 vein ; over the claviform and below it to the s. t. line ; and in the s. t. space. The 

 veins are dark marked through this lighter shading. Basal and transverse anterior 

 lines reddish-gray, slender, marked only through the submedian interspace. Trans- 

 verse posterior line marked only by the contrast between the dark median space beyond 

 the cell and the lighter subterminal space. Subterminal line marked by the contrast 

 between the evenly dark narrow terminal space, and the paler subterminal space ; 

 not extending to the pale apex. A series of small black terminal lunules, beyond 

 which is a yellowish line at the base of the fringes. Claviform long, extending almost 

 across the median space, black margined, smoky filled, the smoky shade extending to 

 the base and filling the submedian interspace. Cell before, around and beyond the 

 ordinary spots, smoky. Orbicular V-shaped, open above, invaded by the reddish- 

 gray shade on the subcostal, margined by a paler line. Reniform narrow, oblong, 

 upright, a little wider above, outlined by a reddish-gray annulus, filled with rusty 

 brown. Secondaries soiled yellowish white at base, darkening to a smoky outer 

 border. A yellow line at base of fringes which are pale, with a smoky interline. 

 Beneath, primaries smoky, becoming yellowish along inner margin ; secondaries 

 whitish, powdered along the costal region with a large apical cloud which is usual in 

 this series. Expands 37 mm. := 1.50 inches. 



Habitat. — Pullman, Washington, August 13. 



A single male, found mixed with a lot of unspread specimens of 

 subgothica. From that species it is at once separable by the lack of 

 the dents or rays extending through the terminal space. It is thus in 

 reality a nearer ally of tricosa Lintner. It differs by the dark costa, by 

 the shape of the reniform and by the course of the transverse posterior 

 and subterminal lines so far as these are traceable. The antennae are 

 quite strongly brush-like, the lateral processes from the joints quite 



