183 



of the otherwise very closely allied A. ht/antis, while the chry- 

 salids of the two Anthocharis are alike, and totally diflFerent from 

 those of Pieris. 



The P. heckerii larvas, when mature, were about 32 mm. long, 

 in color greenish white, thickly marbled or sprinkled with gray, 

 and with a very distinct orange-yellow belt between the seg- 

 ments. The head is also tinged with yellow. In addition to 

 the dark gray sprinkling, each segment has sixteen or eighteen 

 jet black tubercles, which taper into bristles about 1.5 mm. long. 



The chrysalis is of much the same general shape as that of 

 P. protodice, but less angulated ; the point is terminated by a 

 blunt tubercular point ; the cephalic portion of the chrysalis is 

 rounded, with uneven surface, and, like the dorsal surface of the 

 thoi'ax, is dark grayish brown. The ridge above the wing-cases, 

 which is quite conspicuous in P, protodice, is absent in this spe- 

 cies. The remainder of the chrysalis is gray, nearly white 

 upon the wing-covers and on the ridges of the two abdominal 

 segments ; these segments form a sort of hump, which has no 

 dorsal ridge like that on the thoracic hump, and hence is lower. 

 A pale spiracular streak extends from the margin of the wing- 

 covers to the tail, and there are four black dots in a line across 

 the back at the dorsal boundary between thorax and abdomen. 

 The chrysalis state lasts about 18 days. 



During the month of June, one or more eggs or larvjB of 

 Anthocharis hyantis Edw. might be found on almost every cru- 

 ciferous plant growing upon the talus at the base of the walls of 

 the Yo Semite valley, and up to a height of perhaps 450 metres 

 above the floor of the valley. The full-grown larva is 32 mm. 

 long ; head and body apple-green, very minutely dotted with 

 black, wath a pure white stigmatal line or stripe. There are no 

 bristled tubercles on the mature larva, though such are present 

 in the earlier stages. Just before the change to chrysalis, the 

 caterpillar turns dull purple ; the chrysalis retains this color for 

 a day or two, and then gradually assumes a waxy grayish-white 

 color. In shape and general appearance it is like the chrysalis 

 of yl. ausonides (figured in Edwards' Butterflies of N. A., v. 2). 



At different times dui'ing June, I found in the Yo Semite val- 

 ley a few caterpillars which I feel certain are those of A. lanceo- 

 lata. When mature they were 32 mm. long ; head rounded, pale 



