369 



Dyar's account of the life history is as follows: 



"Larz'Q.— Head long, the mouth pointed, apex under joint 2; whitish. Body 

 flattened, narrow, not tapering. Tubercles i and ii approximate with one long 

 and several short hairs, iii single haired, iiib several haired, iv + v large, many 

 haired, the others retracted subventrally. Translucent green, with obscure, 

 straight, subdorsal and broken lateral lines, the latter above tubercle iii. Warts 

 black, i + ii largely so, and forming a double row of distinct spots separated 

 by a straight line of the ground color. Anterior edge of joint 2, posterior rim 

 of reduced cervical shield and warts of anal flap also black marked. Hairs 

 white, spinulose; none secondary. Pupa free, not in a cocoon. 



"Larvae in the heads of Helianthus pumilus. near Boulder Creek Canyon. 

 May 23; moths issued June 12. Eggs were obtained from these which passed 

 the winter without hatching, showing the species to be single brooded with 

 hibernation in the egg state. 



"Egci. — Oviform, elliptical, one end more pointed than the other, b-Hh 

 slightly truncate at the extreme tips, strongly and sharply flattened on two 

 sides, like cakes cut out of dough: pale yellow, opaque, not shining, the surface 

 slightly shagreened, not sculptured. Size, 0.55 by 0.4 by 0.15 mm." 



4. Adaina cinekascens Walsingham. PL XLII, fig. 3. PI. L, fig. 3. 

 Aciptilus cinerasccns Walsingham, Pter. Cal. Ore. 57, pi. HI, f. 13, 1880. 

 Pterophorus cinerascens Fernald, Smith's List Lep. N. A. 88, 1891. 

 Alucita cinerascens Fernald, Pter. N. A. 39, pi. H, ff. 5, 6; pi. IX, ff. 9-11, 1898. 

 Id., Bull. 52 U. S. N. M. 444, 1902. 

 Meyrick, Gen. Ins. C, 14, 1910. 

 Id., Wagner's Lep. Cat. pars 17, 20. 1913. 

 Barnes & McDunnoiigh, Check List 151, 1917. 



Head very slightly touched with brown above and in front. Palpi very 

 short and slender. Antennae whitish. Thorax and abdomen whitish, legs con- 

 colorous, the first pair fuscous inside and middle pair with some fuscous. 



Primaries in good specimens distinctly yellowish, very slightly irrorate with 

 brown. Costa with a brown patch just beyond base of cleft and another beyond 

 middle of first lobe. Cleft preceded by a brown spot slightly produced toward 

 first costal spot but not connected with it. Second lobe with costa at apex 

 brown. Fringes white on costa, grayish elsewhere with two darker patches 

 before apex of first lobe, in cleft, and one below apex of second. Secondaries 

 and their fringes pale brownish gray. Expanse 16.5-19 mm. 



The male genitalia have a remarkably developed jtixta, and are 

 very distinct from any others known to us. 



Distribution: Described from Mendocino and Lake Co., Cal, 

 June. Nevada, June. Utah, July. S. Oregon. 



The Fernald collection contains fotir paratypes in good condi- 

 tion. These differ from Walsingham's figure in the two dark areas 



