ARGYNNIS VI. 



the three upper rows are in vertical line, but from 5 to 13 they are in triangle, 

 those of the dorsal row near the fronts of the segments, the next row to the 

 rear, the third a little in front of the middle ; at the end of 13 is a large spot, or 

 double spot, with several hairs ; the spots of the infra-stigmatal row are placed 

 on the middle of the segments, and still lower, in a line along the base of the 

 legs, are single points, with a fine hair each, but two on 2 ; under side, feet and 

 legs less brown, more green ; head a little broader than 2, rounded, slightly bi- 

 lobed, with many hairs; color dark brown (Fig. h). Most of the larvae became 

 lethargic direct froni the egg, but about ten per cent proceeded to first moult 

 and farther. The first moult was reached at eighteen days from hatching. 



After first moult: length .15 inch; shape of Aphrodite; color yellow-green, 

 the dorsum mottled with brown, especially about the bases of the spines ; spines 

 as in the genus, long, tapering, black, beset with short and fine black bristles, 

 those of the second row rise from either pale j^ellow or greenish tubercles, all 

 others from black ones ; head sub-cordate, the vertices rounded ; at top of each, 

 to the front, a little conical process ; color black, the hairs black. To next 

 moult, in the Fall, five to seven days, in the Spring, fourteen to twenty-three. 



After second moult : length .22 inch ; shape as before, color black-brown, the 

 sides paler than dorsum ; the spines black ; the bases of the dorsal rows pale buff 

 on outer side, but black on the dorsal side, those of second row black, of third 

 buff ; the intermediate ones on 3 and 4 yellow ; head shaped as before, black 

 (Fig. c). To next moult, in the Fall, six days, in the Spring, seven to twelve. 



After third moult ; length .3 inch ; color velvety black, with a tint of brown ; 

 the outer side of ba.ses of dorsal spines now dull yellow; those of second row 

 have very little yellow, and of third have yellow at base and a little way up the 

 stem ; color of front head shining black, but the back is yellow (Fig. d). To 

 next moult, in the Spring, eleven to fourteen days. 



After fourth moult : length .5 inch ; color as at last previous stage ; spines 

 black, both dorsals and those of the second row very slightly reddish yellow at 

 base ; those of the third row and the intermediate spines of 3 and 4 are all 

 orange at base and nearly halfway up ; head as before, black in front, orange at 

 back. At ten days after the moult: length .9 inch; not changed in color, the 

 spines now deep red (Fig. e). (The length mark on the plate represents the 

 length at the moult, not at ten days after, when the drawing was made, and should 

 not have been present). To next and the last moult fourteen and fifteen days. 



