Canadian Butterflies. 351 



Danais Archippus, Goclart, Enc. Method, ix, p. 184, N. 28, 1821, 

 Boisduval et Leconte, Ico., &c , des Lepridopteres, &c., de 

 I'Amer, Sept., t. 1, p. 137, pi. 40, fig. 1-4, 1833. Gosse, 

 Canadian ISTaturalist, p. 262, 1840. 



Papilio Archippus, Fabricius, Ent. Syst., Ill, 1, p. 49, n, 151, 

 1794. Smith <fe Abbott, Lepid, of Georgia, vol. 1, tab. vi, 

 1798. 



Papilio plexippus, Cramer, pi. 206, fig. E. F,, 1779. 



Danaus plexippus, Emmons, Agri. N. Y., Ins. p. 202, pi. 38, 1854 



Papilio tnegalippe, Hubner, Exot. SamI, 1806. 



The four wings are a little siuuated, fulvous above, with a rather 

 brilliant reflection, and the nervures dilated and black. The hind 

 margin is also black, with two rows of white spots, in some indi- 

 viduals a portion of these spots are fulvous. The anterior wings 

 have at the tips a large patch of black upon which are placed 

 three oblong fulvous spots, preceded internally by eight or ten 

 smaller- white or yellowish spots, spreading themselves along the 

 middle of the costa, which as well ss the inner margin is also 

 black. The underside of the wings is much like the upper, but 

 the spots on the hind margin are larger, and all are white. The 

 ground colour of the posterior wings is a bright nankin yellow, 

 with the nervures very slightly bordered with whitish spots. The 

 notches on the margins of all the wings are bordered with white. 

 Expansion of the wings about 4^ inches. The caterpillar is white, 

 transversely banded with black and yellow. It has two pairs of 

 black fleshy prolongations, the first pair is placed on the second, 

 segment, and the other, which is much the longest, on the ele- 

 venth. It feeds on various species of asdepias, and probably in 

 this country, principally on A. syriaca or milk-weed, the " coto- 

 nier" of the French Canadians, so well known for its large pods 

 filled with elastic, silky filaments, and from the young shoots be- 

 ing eaten, in early spring, like asparagus. In July its large clus- 

 ters of purple blossoms are a great resort for moths of various 

 families, and the beautiful chrysomela Lahidomera trimaculata 

 feeds on its milky leaves. 



The Chrysalis is of a delicate green, sprinkled anteriorly with 

 golden dots and marked upon the back a little beyond the middle, 

 with a semi-circle of the same colour, bordered underneath by a 

 row of minute black spots, placed very closely together. 



This is a common species throughout the middle States and the 

 West Indies. It is more abundant in Upper than Lower Canada, 



