34S THE CANAbiAii i;ntoMolog1sT. 



after the plan of P. tur/ms, and, on the 5th of May, it drew the edges of 

 the blade of grass together, and spun a light web about itself. It 

 moulted on the 8th of May. 



Larva — Second stage. — Length after moult, three-twentieths of an 

 inch. Head and collar black as before. Colour of the rest of the body 

 pale waxen-yellow. The spots have developed into warts, and the body 

 is dotted over with short black spines. 



In this stage the larva made for itself a retreat by gathering several 

 blades of grass together, and fastening them with a beautifully reticulated 

 web, the meshes of which were as perfect as those of a cabbage-net. A 

 funnel-shaped opening allowed the larva to protrude as much of its body as 

 it deemed safe, to enable it to feed. In feeding, it bit from the blades till 

 semicircular gaps were formed, thus : — ^^ — It moulted May 21st. The 

 skin of its head came away complete, like a helmet ; the larva 

 apparently having withdrawn its head from the neck opening. 



Larva — Third stage. — Length, four-tenths of an inch. Head and 

 collar jet-black as before ; the former indented. Colour of body, pale 

 grass-green. The larva in this stage is thickly set with black spines or 

 processes. On the third and fourth segments, above the second and third 

 pairs of legs, are, on either side, twin dark brown warts, one above the 

 other and near together — thus ( :). Over the last pair of pro-legs is a 

 large and conspicuous wart of the same nature, and on each of the other 

 segments are three smaller warts, one above another at wide intervals. 

 Above the claspers are a number of bristles. The larva moulted on the 

 2nd of June. The head-case came away as before. 



Larva — Fourth stage. — Length after moult, seven-tenths of an inch. 

 Head deeply indented, black, with two dull yellow stripes extending 

 down the face. Body dull greenish-yellow, very thickly set with black 

 processes and brownish warts, giving the effect of a dull grass-green. The 

 large wart above the hindmost pro-leg, on either side, larger and more 

 conspicuous than before. 



On the 1 2th of June the larva became quiescent, resting in its nest. 

 On the 13th I noticed that the skin had parted at the neck, and that the 

 creature was withdrawing its head (which was white and resembled parch- 

 ment) from its old case. The process was not completed till 10 o'clock 

 a. m. of the next day. Then the head rapidly darkened to black. 



