536 The Ohio Naturalist. [Vol. XII, No. 8, 



The larvse have no defensive structures so far as I am aware. 

 Their color is probably of a great deal of protective value to them. 

 On cabbage and on dock they very closely resemble the color of 

 the leaves. On cabbage they are frequently in a position among 

 the leaves inaccessible to predaceous enemies; on dock the under 

 side of the leaf is not a conspicuous position; and on persimmon 

 they are most commonly closely rolled about by the curling leaf. 



Numerous larvffi of the autumn generation on cabbage are 

 parasitized by the small Ichneumonid, Bassus Icetalorius Fabr.f 



Pupa. 



Dimensions, average of eight: Length about 5.25 mm., max- 

 imtmi breadth 2.5 mm., maximum height 2.o mm. This neglects 

 the breathing tubes at the posterior end of the body which may 

 project 0.5 mm. farther posteriorly or be directed more dorsally. 



The puparimn is broadest and deepest in front of the middle, 

 the anterior end bulbous ; strongly and evenly depressed and com- 

 pressed to the posterior end, the posterior elevation verv gradual. 

 (See Figs. 69 and 70). 



The color in this stage changes very decidedly during the devel- 

 opment of the nymph within the translucent puparium. The 

 color is not resident in the pupal envelope but due almost entirely 

 to the inclosed matter. Consequently at first the colors are those 

 of the larva — light pea-green with a brownish retnnant of the dorsal 

 blood vessel and, at the sides of this, the two whitish lines. The 

 flattened posterior end of the puparium, including the breathing 

 tubes, however, is light testaceous brown, the tips about the spira- 

 cles black. Midway on the length of the breathing appendages is 

 a dark brown ring. 



As the pupa developes within, the color changes, gradually 

 losing all trace of the green and assuming more and more the colors 

 of the adult. The first thing to be noticed is the reddish browm 

 color of the eyes replacing the green in the anterior third of the 

 pupa. Later the black and yellow abdominal markings become 

 apparent. 



The puparium is smooth, bare; the segmental spines incon- 

 spicuous. The breathing tubes as in the larva, proininent sub- 

 cylindrical, the tips around the spiracles becoming black. The 

 wrinkles of the skin often remain rather prominent. 



Pupce were found on persimmon June 1 to 5; on Rumcx more or 

 less continuou.sly from the latter part of June, through July to 

 August; and on cabbage from September 15 to October 15. In 

 captivity a number of pupa? were formed between September 21 

 and October 1. 



fwSee The Ohio Natir.\list, Vol. XII, No. 5, pp. 483, 484, Mar., 1912. 



