COLIAS I. 



After third moult : length .4 ; same color ; in addition to the black processes 

 on 3 and 4 is often a similar but much smaller one on each of the succeeding 

 segments, but they are variable in number ; the band has now an ochreous yellow 

 discoloration at its lower edge, which deepens as the stage proceeds, becoming 

 yolk-of-egg color; head as before. (Figs, e, e".) To next moult three days. 



After fourth moult : length .6 inch ; orange now appears in the band. To 

 maturity about three days. 



Mature Larva. — Length 1.1 inch ; cylindrical, of nearly even thickness from 

 3 to 11 ; thickly covered with small black tubercles, each of which gives a very 

 short, fine black hair; along base from 2 to 13 a narrow white band, through the 

 lower part of which runs au orange stripe, often macular ; on 3 and 4 each, over 

 the band, on middle of the segment, is a vitreous, hemispherical process, black, 

 with purple reflection ; from the centre springs a very small hair, and around 

 base is a cluster of minute black points (Fig. (f) ; these processes on 3 and 4 are 

 constant ; often smaller processes of same character are found on part or all the 

 succeeding segments to 9 or 10, the posterior sometimes greatly reduced ; a 

 ring of points similar to those about the glassy processes surrounds each hair on 

 the mature larva (as the artist has endeavored to show in the enlarged segment. 

 Fig. e'-); color dull green ; under side blue-green; feet and legs same; head 

 round, slightly depressed at top, much covered with fine black points, each with its 

 short black hair. (Figs./,/^,/^.) From fourth moult to pupation about six days. 



There is some variation in the markings at last two stages ; one larva had a 

 narrow black band on middle of each segment, including 2 and 13 (as shown in 

 Fig. h). Another had black beads sprinkled about as follows: on 2, one sub- 

 dorsal ; on 3, three high on side ; on 4, two high on side ; on 5 and 6, one sub- 

 dorsal ; on 8 and 10 each a short bar ; in this last example, as occasionally hap- 

 pened with others, there were black lunate spots beneath the band, such as is 

 commonly seen in Eury theme and Philodlce. 



Another larva had spots from 3 to 11, most with an oblique black dash on 

 lower side. (Fig. g.) 



The larval measurements were taken at or near twelve hours from the egg and 

 several moults. 



CnRYS.\Lis. — Length .8 inch; breadth across mesonotum .19; across abdomen, 

 .2 inch ; greatest depth .28 inch ; compressed laterally ; the thorax on ventral 

 side prominent and forming a narrow ridge ; abdomen tapering, conical ; meso- 

 notum less prominent than in Eurytheme or Philodlce, low, rounded, with a slight 

 carina, followed by a small excavation ; head case produced to a point, a little 

 curved upward, with a regular slope on both dorsal and ventral sides, angular 

 laterally ; color apple-green ; a white stripe often marks the side of abdomen. 

 (Fig. i.) Duration of this stage nine or ten days. 



