44 BULLETIN BROOKLYN ENTOM. SOC. VOL. VII. July 1884. ] 
Larva; Hy. Edw. Papilio, 3, 24. Dull fawn color; a pale brownish dorsal, and 
a subdorsal line slightly waved; also a brown stigmatal line; head edged with a black 
line. Food plant Willow and Poplar. 
35 unijuga, Walk. C.B.M. 1194, Grote, Trans. Am. Ent, Soc. 4, 5, Streck. 
Rho. Het. 37, pl. 5, f. 9, junctura, Grt. (nec. Walk.) Trans. Am, Ent. Soc. 4, 5, Can. 
Ent. 9, 168, Hy. Edw. Bull. Brookl. Ent. Soc. 3, 56, Lucilla, Worth. Papilio 3, 40. 
Primaries very light squammose gray, heavily powdered and shaded with black 
atoms; the base, reniform and terminal space, especially heavily shaded; t.a. line 
geminate, diffuse; t.p. line rather heavy, M not very strong, the line below dentate; 
subreniform white; a diffuse white spot beyond reniform; s.t, line white, dentate. 
Secondaries red, somewhat shaded at base, with black median band strong, reaching 
anal margin; marginal band broad. Expands 80—85 mm. Habitat, N.H. U.S. and 
Northward. 
I am not able to see any distinct difference in Lwz/la. 
Var. Meskei, Grt. Can. nt. 5, 161, lc. 5, 233, lc. 9, 168, Hy. Edw. Bull, 
Brookl, Ent. Soc. 39 5Y-, 
Primaries somewhat lighter than wnijugu. Secondaries with median and marginal 
bands narrower, the former not reaching anal margin. 
Var. heaniana, Grt. Can. Ent. 10, 195, Noct. N.A: 67, pl. 4, f. 42, Hy. Edw. 
Bull. Brook]. Ent. Soc. 3, 55. 
Primaries darker than unijuga. Secondaries with median band more even, not 
reaching anal margin. 
Larva; Kellicott, Can. Ent. 13, 38, Bunker (Meskei), l.c. 15, 100. Gray to gray 
‘drab; nearly concolorous, without protuberances. Food plant, Poplar and Willow. 
36. pura, Hulst, Bull. Brookl. Ent. Soc. 2, 96, Papilio, 1, 218, Grote, lc. 1, 
163, Can. Ent. 15, Il, 13. 
Primaries white, lightly and diffusely shaded with blackish; lines much as in 
unijuga; submarginal space whitish, evenly and strongly dentate outwardly; a slight 
longitudinal shading from base, across the wing, parallel with inner margin often 
present. Secondaries bright red; marginal band not much curved, short. Expands 
75—80mm. Habitat, Col. and New Mexico. 
I would have no hesitancy in referring pura as a synonym of semi- 
relwta, and both as a var. of Brisers, were it not that in pura the hind 
tibize are spinulated. In coloration they very closely resemble each other. 
It is my present idea that pura is the form uwnyuga takes in Col. and 
N. Mex., as Syre/chit may be along the Pacific Coast. 
37- Stretchii, Behr. Trans. Am. Ent. Soc. 3, 24, Hy. Edw. Cal. Acad. Sci., 
July 19, 1875. 
Primaries like wnijuga, but without white beyond reniform, and on subreniform; 
and with shadings of cream brown, especially on median space and beyond t.p, line. 
Secondaries bright red, bands narrower than in unijuga. Expands 80mm. Habitat, 
Cal. and Ariz. 
