54 



regular rows radiating from the apex. They are deposited 

 singly on the under surface of leaves. I observed a female 

 ovipositing, one evening just before it was too dark to see the 

 eggs. She was fluttering around some bean vines, and would 

 occasionally alight but an instant on the edge of a leaf, bending 

 her abdomen beneath to place the egg on the under surface; then 

 she would fly about a few moments and go to another leaf. I 

 watched her several minutes, and she oviposited at the rate of 

 about two eggs per minute. 



Some of the eggs hatched in six days. The freshly hatched 

 larvae are 2 mm. long, green with black hairs situated in 

 small black tubercles. At first they ate small patches of the 

 substance of the leaf, leaving the opposite epidermis; but when 

 five days old they ate small holes entirely thru the leaf. Larger 

 caterpillars ate larger holes, and ate the leaves from the margin 

 as well. 



There is very little change in the larva at the successive 

 molts, except in size. The full-grown larva is about 36 

 mm. long; bright green, with a white line just above the line of 

 spiracles, and several faint, crinkly, white lines down the back, 

 often a black spiracular line; tubercles mostly white, except a 

 row just above the spiracles which are black and larger than the 

 others. (Usually all tubercles were black previous to the last 

 molt). Feet often black; head green, with black dots where the 

 hairs are situated, and a black line on lateral margins; mandibles 

 blackish on tip and edges. The prolegs are situated on segments 

 9, 10 and 13, and the caterpillar crawls by a looping motion; 

 when at rest, its back is humped up. 



A caterpillar in breeding cage obtained its growth and ready 

 to pupate in twenty-three days. The pupa is pale green with a 

 broad brown streak on the back, darker on the margins of the 

 segments, the whole pupa turning brownish a little before the 

 adult emerges ; wing and leg-cases extend just a little beyond the 

 posterior margin of the fourth abdominal segment; cremaster 

 short, with several tiny brown hooks attaching the pupa to' the 

 slight white silken cocoon, which is made between leaves fastened 

 together, or in the fold of a single leaf; length of pupa 19 mm., 

 width 4.5 mm. The pupal period is eight to eleven days. 



Food plants. — Caterpillars of this species are quite general 

 feeders. I have found them feeding upon the following plants: 



