LEPIDOPTERA. 277 



top of the back is a row of short black tufts, and on each side, 

 from the fifth to the tenth ring inclusive, arc 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 them- 

 selves, and make their cocoons, which mostly consist of hairs. 

 The chrysalis is short, almost egg-shaped, being quite blunt 

 and rounded at the hind end, and is covered with little punc- 

 tures 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 antennte 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 abdo- 

 men bright Indian-yellow, with a row of black spots, and two 

 rows on each side. It expands from one inch and three quar- 

 ters to nearly two inches. This moth was figured and described 

 many years ago by Drury, who named it E^le. 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 Euchcetes Egle; 

 the first name, signifying fine-haired, or having a flowing mane, 

 is given to it on account of the long tufts of hairs overhanging 

 the fore part of the caterpillar like a mane. This moth, in 

 some of its characters, approaches to the Lithosians, but seems, 

 in others, too near to the Arctians to be removed from the 

 latter tribe, and it is evidently, in the caterpillar state, nearly 



