279 



black. First three segments more ashy colored than the rest of the body. 

 Thus it has one dorsal and, on each side, three lateral rows of branched 

 spines. 



Suspended Aug. 23, 1822. Chrysalis Aug. 24. Chrysalis yellowish 

 brown; head squarish or but slightly indented; two eminences each side, 

 brassy; two smaller, like eyes, brassy; nose-like prominence, antennas cases, 

 and some stripes between them, brassy; four dots between antennaj (two on 

 each side) and four or five on each wing case, black; one large and one 

 very small tubercle under chin, one row in middle of the back, and one on 

 each side of larger tubercles, brassy; wing cases with an oval brassy spot 

 and eye. Tail with a black line. 



July 5. Three nearly grown larva? of the hollyhock resemble very closely 

 in color the paler ones of the Onopordon. 



July 5, P. M. Two (on the Cnicus) suspended. July 17, A. M. Two 

 imagines. Between the 6th and 12th of July many larva? of the Cnzcws, 

 Onopordon and hollyhock were suspended, and became pupa?. 



Imagines appeared May 10, July 17, A. M., July 18, A. M., July 19, A. M., 

 July 21, P. M., Aug. 1. 



Cynthia Atalanta Linn. 



Found July 9, 1828, on the nettle. It forms a slight web on the upper 

 surface of the leaf, and then approximates the two sides so as to conceal 

 itself entirely. In eating it devours the leaf, beginning at the apex, and as 

 it gradually consumes its habitation, it is forced to betake itself to a new 

 leaf, within which it again conceals itself. The larvas differ in color from 

 those described by De Geer, who said they were black. 



1. Pale snuff colored, with confluent, sulphur colored spots; a lateral 

 series of lunate, sulphur colored spots. Spines branched, luteous, seven in 

 each segment except the first; this and the head have a transverse series 

 of small, acuminated tubercles. The head is cordiform, or bifid above, color 

 black, setif'erous points or tubercles white, among which are a few black 

 ones. Feet blackish. Prolcgs brownish. 



2. Rich deep purple brown; lunules white; head brownish, or purple 

 black; spines yellowish white. Spots on body white. Suspended July 13, 

 1828. Chrysalis next morning. Winged July 24, 1828. 



3. Colors same, except those of fourth spine of second segment, which are 

 black. Suspended July 15. Chrysalis July 16. Winged July 26, 1828. 

 Length of larva when fully grown nearly one and one half inches. 



The chrysalis state continues ten days. The larva, when suspended, is 

 more curved than most others, the head nearly reaching the tail. 



Observed the imago May 10, 1825, Sept. 15, 1825, July 1, 1833, Aug. 6, 

 1839. 



