8 ZYGCENID^ AND BOMBYCID/E 



and thence they diminish to the ninth, while again the posterior spot 

 is very large, and very distinct. The orange bands are interrupted on 

 the top of the seventh, eighth and ninth segments." 



Pupa. — The larva enters the ground to undergo its transformation, 

 constructing an earthy cocoon, no silk being used in its construction, 

 and only sometimes a little gummy secretion. The larva is full fed 

 about the middle of July. 



2— ALYPIA BRANNANI, N. S. (Pi. l. fig. 8, ^ .) 



3 . — Head, black, hairy; sides of the front with a few long yellow 

 hairs. Antennae, slender, black, slightly thickened in the middle. 

 Palpi, hairy, black, with a few long yellow hairs on the basal joint, and 

 a few shorter ones at the base of the terminal article. Prothorax, hairy, 

 black, with a few yellow hairs in the centre, and the sides and beneath 

 of the same color. Patagia, clear sulphur yellow. Abdomen, above 

 and below, black, with an indistinct whitish dorsal line. Anal tuft, 

 black. Legs, black, with orange colored scales on the tibiae of the 

 middle and anterior pairs. 



Wings, deep black, with fringes of the same color. Anterior wings 

 with the costa swollen at the base, making the costa distinctly con- 

 cave beyond the middle, much more so than in A. octomaculata. 

 The markings consist of two white spots; the basal one being sub- 

 quadrate, the terminal one lying across the nervules, slightly reduced, 

 transverse and ovate. Posterior wings with two white spots, the basal 

 one moderate, rounded, divided by the black median vein ; the other 

 beyond the middle, reduced and sub-ovate. Beneath as above, except 

 that the spots are somewhat larger, the margins being clouded, and 

 less clearly defined than in A. octomaculata. This is especially the 

 case with the basal spot on the primaries. 



Expanse of wings, 1.30 inches. Length of body, 0.55 inch. 



Habitat. — California. (Coll. H. Edwards). 



This insect was taken by S. Brannan, Jun., near Cisco, on the 

 Sierra Nevada Mountains, at an elevation of about 6,000 feet, in July, 

 on the flowers of various composite plants. 



While strongly resembling A. octomaculata in the style of markings, 

 it is easily separated from that species not only by the difference of 

 color, but by the structure of the costa of the fore wings, which resem- 

 bles that of the males of A. Lorquiuii and A. Similis. 



