THE CANADIAN ENTOMOLOGIST. 5 
flattened at the base. When viewed with a magnifying glass they appear 
pig Fig. 1, | very beautiful. See figure 1, 
| where @ represents the egg 
2 
oO . - . 
ga much enlarged, while at cit is 
aa shown of natural size and in 
a its usual position on the un- 
aa derside of the leaf. On this 
Je] 
egg there are about twenty- 
five raised longitudinal lines, 
and about the same number 
of cross lines between each, 
so that the whole appears covered with a regular and beautiful net work, 
as shown in thé figure, which has been drawn from nature, as those also 
have which are to follow, by our esteemed friend, Prof. C. V. Riley, of 
St. Louis, Mo. 
In about six or seven days the egg matures, producing a minute 
caterpillar one tenth of an inch long, with a large black head, and yellow- 
ish-white body, with a few black hairs on each segment, as shown at e and f, 
fig. 1. This larva grows very rapidly, and soon finds that its skin will 
bear no further stretching, when it conveniently disrobes itself and 
appears in garb gay and new by crawling out of its skin through a rent 
down the back, which takes place just at the proper time, which process 
is repeated three times during its growth. At 4, fig. 1, the head and 
anterior segments of the larva just before its last moult is figured for the 
purpose of showing how the long fleshy horns with which the mature 
caterpillar is furnished are conveniently coiled up when buried beneath 
the old skin. 
The full grown larva, fig. 2, is about one and three quarter inches long. 
NS ~ Its head is yellowish 
with a triangular 
black stripe in front 
below, and another 
of a similar shape 
above. 
The upper surface 
of the body is beau- 
tifully ornamented with transverse stripes of black, yellow and white, the 
white covering the greater part of each segment, and having a wide black 
