360 LEPIDOPTERA. 



proceeding from little warts. Along the top of the back is a 

 row of short black tufts, and on each side, from the fifth to 

 the tenth ring inclusive, are alternate tufts of orange and of 

 yellow hairs, curving upwards so as nearly to conceal the 

 black tufts between them ; below these, along the sides of the 

 body, is a row of horizontal black tufts ; on the first and 

 second rings are four long pencil-like black tufts extending 

 over the head, on each side of the third ring is a similar black 

 pencil, and two, which are white, placed in the same manner 

 on the sides of the fourth and of the tenth rings. About the 

 last of August, and during the month of September, these 

 caterpillars leave the milk-weed, disperse, conceal themselves, 

 and make their cocoons (Fig. 173), which mostly consist of 



hairs. The chrysalis (Fig. 174) 



Fig. 173. Fig. 174. J * 



is short, almost egg-shaped, being 

 quite blunt and rounded at the 

 hind end, and is covered with lit- 

 tle punctures like those on the head of a thimble, only much 

 smaller. The chrysalids are transformed to moths between 

 the middle of June and the beginning of July. These moths, 

 though not so slender as the Callimorphas, are not so thick 

 and robust as the Arctias, their antennae resemble those of 

 the latter, but are rather longer, the feelers are also longer, 

 and spread apart from each other, and the tongue is but little 

 longer than the head, when unrolled. The wings are rather 

 long, thin, and delicate, of a bluish-gray color, paler on the 

 front edge, and without spots ; the head, thorax, under side 

 of the body, and the legs are also gray ; the neck is cream- 

 colored ; the top of the abdomen bright Indian-yellow, with 

 a row of black spots, and two rows on each side. It expands 

 from one inch and three quarters to nearly two inches. This 

 moth was figured and described many years ago by Drury, 

 who named it Eyle. Though marked and colored like some 

 of the Arctias (for example, the luctifera of Europe), it 

 cannot with propriety be included in the same genus, and 

 therefore I have proposed to call it JEuchcetes Egle; the first 



