ACADEMY OF SCIENCES. 23 



chestnut color. Underside, as well as the feet and abdominal legs, dull 

 black. 



Length, 2.00 inches. 



Food plants, Frangula Calif ornica, and various species of Rosa. 



Hemileuca Nevadensis. Stretch. 



Head shining, reddish brown. Body, pale citron yellow; 2d segment with 

 reddish brown transverse streak, armed anteriorly with six black spines, hav- 

 ing pale yellow branches; 3d, 4th, 5th and 6th segments, each with eight 

 spines; 7th, 8th, 9th, 10th and 11th, have six spines each; 12th and 13th, 

 only five, the middle one of the last being placed posteriorly to the other- 

 four. The whole of the lateral spines, as well as those of the 13th segment, 

 are black, with pale yellow branches. Those of the dorsal pair of segments, 

 three to eleven inclusive, are dull yellow, mottled with black, as is also the 

 medium bunch of spines of the 12th segment, giving, when viewed without a 

 lens, the appearance of a yellow dorsal line. There is a narrow central line 

 of reddish brown, and each segment is also marked with transverse streaks 

 of the same color, which, on the sides, become a broken but well defined 

 band. Spiracles, orange, edged with reddish brown. Feet and legs also 

 reddish brown, and segment tipped with the same color. 



Length, 2.00 inches. 



Food plant, Willows. 



The above description is taken from one of several caterpillars, obtained in 

 Fresno Co., Cal., by Dr. Eisen, and by him forwarded to Dr. H. Behr. In 

 the description of the larvae of H. Maia Drury, I find a notice of two red- 

 dish tubercles on each segment, which are entirely absent in the present spe- 

 cies. In other respects they are much the same. Maia generally feed on 

 oaks, while this was invariably found upon willows, and fed in confinement 

 upon the weeping willow of the gardens. 



Fam. NOCTUIDiE. 



Acronycta lepusculina . Grote. 



Mature Larva. General color of body pale bluish green. Head a little 

 paler. Mouth parts and prolegs deep black. Spiracles black, with whitish 

 centre. The whole of the body is covered with very long silky white hairs, 

 -,% of an inch long, with some shorter black ones mingled, chiefly in the 

 dorsal region. Abdominal legs bluish green. 



Length, 1.10 inch. • 



Food plant, Poplars. 



Changed to chrysalis July 23d; Imago, September 26th. . 



Drasteria ere.ciho. Bdv. 



Egg. Spherical, a little flattened at the poles; color, pale apple green, 

 deeply striated, but with the striae not reaching to the apex. Spaces between 

 the strite transversely rugged. Deposited separately on leaves of Lupinus and 

 Erodium. 



