176 ZYG^NID.E AND BOMBYCID^ 



median vein, the outer one to the fifth costal spot. There is, besides, 

 a pupilled spot on the inner margin near the anal angle, and one im- 

 mediately above it inside the submedian vein. These spots form six 

 more or less perfect transverse bands. 



Secondaries white, slightly caudate, with a terminal series of small 

 black spots on the outer margin, and a stripe of dusky hairs near the 

 inner margin, with faint traces of a discal dot. 



? . — Much larger than $ , and paler colored. Nearly all the spots 

 on the primaries become black rings, with white centres; and the 

 thoracic markings also have white centres, being reduced to black 

 lines indicating the shape of the spots in $ . The abdomen is dark 

 ochre yellow above, with black spots at the sides, and a series of broad 

 transverse dorsal blackish-steel-blue bands, each with a central notch 

 in front. The abdomen is much stouter and the anal angle of the 

 secondaries less caudate, while the discal dot is distinct. The costa of 

 the primaries is also slightly more convex than in $ . 



Expanse of ivings, 5 2.25 $ 3.25 inches; letigth 0/ body, 5 0.85, 

 $ 1.25 inches. 



Habitat. — Atlantic States generally. Missouri (Riley). New York 

 (Grote). Virginia (Lyman). North Carolina (Shute.) Canada West 

 (Saunders). California.? (Boisduval). Southern States (Riley.) 



Larva. — The following description is from the pen of C. V. Riley, 

 of St. Louis (loc. cit.) "Average length 2| inches. Head black, 

 polished, brownish at sides and below ; epistoma, antennce and palpi 

 more or less distinctly; glassy white, the joints of antennce marked with 

 light brown, cervical shield brown-black. Body above black, inclin- 

 ing to brown laterally ; bright reddish-brown at sutures, showing in 

 strong contrast, especially between joints 3 — 10 when the larva is 

 curled up, but scarcely visible when straightened and contracted. Ver- 

 rucose warts arranged as follows : On joint one, two each side of 

 cervical shield ; on jts. 2 and 3, a transverse row of 8 ; on jts. 4 — n 

 inclusive 12, the 4 on dorsum trapezoidal, the two anterior ones ap- 

 proaching nearest ; on jt. 12 a transverse row of six. Venter dull 

 purplish-brown, the legs of the same color, the legless joints with four 

 small verrucose warts. Hairs barbed, stiff, spine-like and jet black.'' 

 " This worm feeds, mostly during the night, upon the wild sun-flower 

 ( Heliatithus decapetalus), the different species of plantain {Plantagd), 

 and and willows. My friend J. A. Lintner, of Albany, N. Y., thinks 

 it likewise feeds on Black Locust, as he has often found it beneath that 



