13G zyg^nid.t: and bombycid.i-: 



stigmata dark brown, a ventral and two sub-ventral rows of pale brown 

 spots. Legs pale yellow ochre mottled with brown. 



Anterior wings clear brown finely dusted in the interspaces with 

 pale yellow ochre, which color also prevails in the brown fringes, at 

 the tips of the nervules. Five yellowish costal spots, each belonging 

 to a transverse oblique band of large silvery white spots. Band i is 

 submarginal, consisting of seven interspaceal sub-equal spots, and is 

 very regular ; band 2, crossing the origin of the median nervules, 

 consists of seven spots, the last being on the inner margin, the 3rd 

 spot is very small, the 4th somewhat larger, the ist, 2nd, 5th and 6th 

 large and conspicuous ; band 3 consists of three spots, ist on discal 

 area, 2nd and 3rd fused to spots 5 and 6 of band 2 ; band 4 is sub- 

 basal, consisting of four or five minor spots ; band 5 is not well 

 defined, the base of the wing being mottled with many small spots. 



Posterior wings nearly white, thin, with faint brown spot on the 

 discal vein and a small apical cloud of the same color. 



Beneath much as above, though paler, especially at the base of the 

 primaries. There is also a dark costal spot on the secondaries not 

 seen above. 



Expanse of Wings, 5 2.00 ? 2. 30 inches; length of body, 0.80 

 o. 90 inch. 



Habitat. — California. (Coll. Behr. Behrens, Mus. Comp. Zool. 

 Camb. ) 



Described from one 5 $ in the collection of Dr. Behr, of San 

 Francisco, raised from larva found feeding on pine leaves in the Sierra 

 Nevada Mountains, near Grass Valley. Of these I unfortunately 

 have no description, but they were dark brown, somewhat resembling 

 the larva of H. Edwardsii. Mr. H. Edwards also found a larva in 

 Yosemite Valley, which died before reaching maturity, apparently 

 belonging to the same species, while the original type was collected 

 by Mr. Agassiz in the Gulf of Georgia, so that the species will be seen 

 to have a wide range, and is apparently a mountain insect, differing in 

 this respect from H. Agassizii and H. Edivardsii, which are common 

 in the valleys. The specie is well marked and not likely to be mis- 

 taken for any other, without it might be H. Sobrina (q. v.) From this 

 it may be easily separated by the light colored body parts marked on 

 the thorax with dark brown. These in the latter species are uniformly 

 dark brown. 



