LÉPIDOPTÉROLOGIE COMPARÉE 1/5 



minute black points; eye spots black. The body is sprinkled with 

 black claw-like points similar to the last stage. Several moulted 

 a second time during first week of September, and entered into 

 hibernation during the latter half of the month, resting on the 

 basai stems of grass. 



" After the second moult, after hibernation, when about 190 days 

 old, the larva is 2/7 in. long, which is only a trifle longer than the 

 previous stage, but it is a good deal stouter. Excepting the stripes, 

 which are bolder, the colouring and pattern are the same as 

 before moulting; the hook-like points are more developed. 



" On March 6th I examined plants upon which the larvae hiber- 

 nated, and found eighteen had survived the winter; a few of 

 thèse were moving slowly about. The follovving day being warm 

 and sunny, I noticed three had crawled up the fine Festuca blades 

 and were eating the extrême tips in the sunshine. They continued 

 feeding through March, usually during the morning, when the sun 

 had sufhciently raised the température. 



" Most of the larvae moulted a third time during March. After 

 the third moult,, nine months old, they are 1/2 in. long; the whole 

 colouring and markings are clearly dehned; the head is clear 

 green, granular and sprinkled with minute white points; the body 

 is likewise granular and studded with whitish warts, each bearing 

 a thorn-like point. In captivity they feed on various grasses, 

 especially Festuca, which they always eat at the tip, gradually 

 eatmg it down. In movements they are most sluggish, gliding 

 along with a very slow slug-like motion. Upon the slightest distur- 

 bance they fall from the plant. 



" On April ist the first one fixed itself for the fourth and last 

 moult. After the fourth and last moult, fully grown, it measures 

 I in. long; it is rather slender and slightly attenuated anteriorly, 

 and more so posteriorly. The head is globular, granulated and 

 covered with extremely minute hair-like points, which develop mto 

 whitish hairs in front. The segmentai divisions of the body are 

 ill defined, and each with six subdivisions forming transverse 

 wrinkles. The surface, like the head, is granular and sprinkled 



