250 Journal New York Entomological Society [Vol vi. 



Arctia nevadensis Grote. 



Body black, with a purplish tinge, the portion below the spiracle 

 lighter, more grayish ; a broken dull white dorsal line ; warts light 

 gray, hairs issuing from them in spreading clusters not concealing the 

 ground color, mixed black and reddish, or black and yellowish, the 

 red and yellow hairs most numerous in the middle of the dorsum and 

 low down on each side of the body, and varying in color from a bright 

 brick-red to a pale straw -yellow ; spiracles yellowish-brown, ringed 

 with black ; head black, the sulcus on top between the two lobes, usu- 

 ally the sides and lower margin of the clypeus and a dot at the base of 

 each antennge, yellow, mouth parts marked with yellow, anal and ab- 

 dominal prongs largely pale yellowish. Length, 36 mm. 



Found a great many from one-half to nearly full grown feeding 

 upon various plants at Santa Monica, California, March 14, 1891. 

 Placed leaves of Malva borealis in their cage, and they fed greedily 

 upon them. One moth issued July 29 ; at this date there were two 

 chrysalids and ten larvae ; the remaining moths issued in August and 

 September. All the moths bred had the black thorax. 



Hemileuca electra Wright. 



Body black, thickly dotted with white ; an indistinct broken black 

 dorsal line bordered by a white line ; a yellowish or white subdorsal 

 and two stigmatal lines, one of the latter above and the other below 

 the spiracles ; spines short, in thin spreading clusters, those in the two 

 dorsal rows simple except on segments one and two, in the other rows 

 a branched spine arises from the middle of each cluster, each branch 

 terminating in a long slender bristle ; body thinly covered with short 

 stiff white hairs, not concealing the ground color ; head shining black, 

 thinly covered with short stiff white hairs ; space between the two 

 stigmatal lines less dotted with white than the remainder of the body ; 

 sutures more or less brownish ; spiracles brown, ringed with black. 

 Length, 45 mm. 



Found several on Eriogonum fasciculatum on a high hill near 

 Riverside, California, April 12, 1887. One pupated May 8, and the 

 moth issued November 1, of the same year. 



