84 ZYG.'ENID.E -VXD BOMBYCID.E 



entirely dislocated on the ^ilth s. c. Secondaries and abdomen pale 

 Vermillion. The former with three transverse dusky bands, of which 

 the inner is the broadest ; the outer consists of four disconnected spots, 

 and the outer margin is lined with dusky cinereous. 



" Primaries beneath with four costal yellow spots, of which the second 

 is much the largest. There are two smaller triangular ones on the inter- 

 nal margin, obscurely connected with the costal one by a dark obscure 

 line, the marginal white line is the same as in the upper surface. Sec- 

 ondaries, costal half of base yellow, with two costal yellow spots, of 

 which the outer is much the smaller; the internal half of the base of the 

 wing is pale vermillion, and the wing below the median nervure is 

 slightly tinged with vermillion. Transverse incomplete lines as on the 

 upper side. 



" Legs : femora beneath vermillion, femoral joint and tips of tibiae 

 and tarsi slate and whitish, ringed with black. Abdomen above ver- 

 million, with a dorsal median broad dusky line and a lateral row of 

 small approximate black dots, bounding the pruinose ventral side." 



Packard, (loc. cit.) 



The above carefully drawn description of the ? leaves nothing to be 

 desired, as the 3 differs only in being a trifle smaller, while the abdo- 

 men shows less of the slaty and more of the rosy tints. 



Expanse of ivings, i. 50 to 2. 10 ins. Length of body, o. 60 to o. 80 in. 



Habitat. — California, (Coll. Mus. Comp. Zool. A. Agassiz; Edwards, 

 Stretch, Behr, et als.) 



Larva. — Entire body warm smoky brown, each segment with a trans- 

 verse row of rounded paler tubercles, varying on the different segments 

 from seven to nine in number. From each of these springs a divergent 

 bunch of stiff, rigid, moderately long black hairs of irregular length, 

 mixed with a few scattered longer hairs of bright reddish brown. In 

 appearance the body is cylindrical, moderately stout, and about equally 

 attenuated at both extremities. Length about 1.75 inches. 



The habits of this larva are most interesting. It feeds on the various 

 species of lupins, and appears to be well distributed round the Bay of 

 San Francisco, as I have received the insect from a number of different 

 localities within a radius of twenty miles. It is a nocturnal feeder, 

 hiding in the day time under the dead bark of trees or in other shel- 

 tered places. About the 9th of May, 1870, I found a dozen larvae 



