164 mOCEEDINGS OF THE NATIONAL MUSEUM. vol.xxi. 



upright. It is not complete in any of the specimens before me, but is 

 always obvious on the costa at any rate. The median shade is trace- 

 able from the costa through the reniform as a somewhat diffuse black 

 shade. The transverse posterior line is usually well marked, strongly 

 dentate on the veins, particularly on 3 and 4; it is geminate, the outer 

 line lunulate, the inner more even and broken; it is rarely complete. 

 Tlie siibtermiiial line is broken, pale, consisting of rather a series of 

 sliades than a real line. The terminal si)ace is marked by a series of 

 black s])ots, separated by the paler veins. There is a series of black 

 terminal dots, beyond which the fringes are cut with black. The ordi- 

 nary spots are traceable. Tbe orbicular is round or nearly so, small, 

 defined by black scales. The reniform is large, indefinite, dusky. As 

 a whole the lower portion of the wing is darker than the upper because 

 of a black shade which extends from the base through the median space 

 below vein 2. It may or may not be cut by the transverse i)osterior 

 line, and beyond it this shade reaches to the outer margin, extending 

 upward to vein 3. A somewhat triangular patch extends from the 

 transverse posterior line to the outer margin opposite the cell. Above 

 this the space between tlie transverse posterior and the subtermiual 

 line is black. The veins are generally a little paler, so that the wings 

 have a rayed appearance. Secondaries white in the male, with a discal 

 spot and an outer, smoky margin. In the female they are smoky. 

 Beneath, white in the male, smoky in the female; both wings with a 

 discal spot, but with only a faint trace of an outer line. 



Expanse, 1.40 to 1.08 inches (35 to 42 mm.). 



Habitat. — Sierra Nevada, California, in June; Easton, Washington. 



This species varies little in the series before me, except in size. The 

 females are as a whole larger than the males, but the difference is not 

 great. There is some difference in the amount of black in the wings, 

 and this determinps the distinctness with which the markings appear. 

 This type seems to be an intensification of the characters found in 

 harnc.sii, but with the transverse lines much better marked. The legs 

 of the male are longer ; the femur is graceful, the thickest portion toward 

 the base; the tibia is i)roportionately longer, with the ei)iphysis set at' 

 the middle and not reaching to the tip. The harpes of the male are 

 evenly rounded at the tip. The clasper has the upper and lower proc- 

 ess of nearly equal length; both being curved, but the lower is acute 

 at tip and somewhat beak-like, while the upper is cylindrical, blunt at 

 tip and rather more claw-like. Tlie si)ecies is a distinct one in all its 

 characters. 



ACRONYCTA EDOLATA Grote. 

 (Plates IV, i\<r. 1, adult; XVIII, fij-'. 17, leg; XXII, fig. 17, male geuitalia.) 



Apatela edolala Gkote, Papilio, 1^81, I, p. 153. 



Mastiphanes edolata Grotk, 111. Kssay, 1882, p. 4J(, pi. i, fig. 4. 



Ground color a very dark bluish gray, strongly overlaid by black 

 scales. Head blackish above; collar blackish in the center, leaving 



