IS 
and the legs brown; becoming pale toward the ends; the ends of the 
femora being pale, the tibiae pale brown in the middle, much paler 
at each end, while the tarsi are whitish, though the tip of the last 
joint is dark. It is from a line to a line and a third in length. 
“The larva is a little white maggot about a sixth (T7) of an inch 
in length. The body consists of thirteen segments, exclusive of the 
head, and is cylindrical, tapering rapidly toward the head, while the end 
of the body is acutely pointed. /The chrysalis is whitish, the limbs 
being folded along the under side of the body, the antennae reaching to 
the end of the wings; the second pair of legs reaching half-way between 
the end of the wings and the end of the abdomen; while the tips of 
the third pair of feet reach half-way between the second pair of feet 
" and the end of the abdomen. It is from s a line to a line and a third 
in length.” 
According to Curtis the female deposits her eggs upon the outside 
of the chrysalis of the butterfly as soon as the caterpillar has cast off 
its skin, and while it is yet soft and tender and exhausted by the 
severe change which it has undergone. These eggs soon hatch, and 
the little grubs at once eat their way into the body of the chrysalis, 
the interior of which at this time is in an almost liquid state. 
Mr. Curtis does not state whether this is given upon his own ob¬ 
servation or the statements of others. 
While not without a parallel it does not appear to be by any means 
a common habit of the parasites of this group to select such place 
for depositing their eggs; and so far I have failed to find any eggs 
or appearance of eggs on the pupa case of parisitized specimens. 
It is also an unsettled' point among entomologists as to whether 
this parasite operates on its victim in the larval or chrysalis state. 
That the eggs are not deposited on the external surface of the pupa 
may safely be taken for granted until careful observation shows it to 
be otherwise. The -negative evidence is against this mode; the usual 
habit of these parasites, in this respect, is against it; the fact that only 
the soft, tender and recently transformed specimens are selected, in¬ 
dicates the contrary. For example, according to Kirby and Spence 
(Introd IV 233) Callimorne pnparum commits its egg& to the chrysalis 
of Vanessa urticce. The moment this caterpillar quits its skin to 
assume that state, while it is yet soft, they pierce it and insert their 
e gg s - . 
The following statement by Mr. Saunders, editor of the Canadian 
Entomologist, in the October number (lt?78) of that periodical indi¬ 
cates, so far as a single observation bears upon the question, that the 
Pttromalus puparum follows the usual habit of its congenors, to-wit: 
deposits its eggs in the caterpillar. 
“A few days since, while watching some of the full grown larva? 
of the cabbage butterfly which were feeding on Nasturtium leaves, I 
was much gratified in witnessing the method of attack which this 
parasite adopts. Settling herself quietly down on the back of the 
caterpillar, near the terminal segments, with her head towards the cat¬ 
erpillar’s head, she paused awhile; then with a sudden movement of 
her ovipositor, so quickly that the motion almost escaped detection, 
she thrust an egg under the skin of her victim. The caterpillar 
seemed startled, and quivering, jerked its head and anterior segments 
