330 INSECTS INJURIOUS TO VEGETATION. 



themselves three or four inches deep, and turn to chrysalids 

 without making cocoons. The chrysalis is dark brown, and 

 rough with elevated points. The moths begin to come out of 

 the ground as soon as the twenty-fifth of June, and others con- 

 tinue to appear till the twentieth of July. Though of small 

 size, they are very beautiful, and far surpass all others of the 

 family in delicacy of coloring and design. The name of this 

 moth is Etalryas grata* the first word signifying beautiful 

 wood nymph, and the second agreeable or pleasing. The an- 

 tennae are rather long, almost thread-like, tapering to the end, 

 and not feathered in either sex. The fore wings are pure 

 white, with a broad stripe along the front edge, extending from 

 the shovilder a little beyond the middle of the edge, and a broad 

 band around the outer hind margin, of a deep purple-brown 

 color; the band is edged internally with olive-green, and 

 marked towards the edge with a slender wavy white line ; 

 near the middle of the wing, and touching the brown stripe, 

 are two brown spots, one of them round and the other kidney- 

 shaped ; and on the middle of the inner margin there is a lai-ge 

 triangular olive-colored spot; the under side of the same wings 

 is yellow, and near the middle there are a round and a kidney- 

 shaped black spot. The hind wings are yellow above and 

 beneath ; on the upper side with a broad purple-brown hind 

 border on which there is a wavy white line, and on the under 

 side with only a central black dot. The head is black. Along 

 the middle of the thorax there is a broad crest-like stripe of 

 black and pearl-colored glittering scales. The shoulder-covers 

 are white. The upper side of the abdomen is yellow, with a 

 row of black spots on the top, and another on each side ; the 

 under side of the body, and the large muff-like tufts on the fore 

 legs, are white; and the other legs are black. This moth rests 

 with its wings closed like a steep roof over its back, and its 

 fore legs stretched forward, like a Cerura. It expands from 

 one inch and a half to one inch and three quarters. 



Eiulrijas loiio, of Hiibner, the pearl Eudryas, as its name 

 implies, is a somewhat smaller moth, closely resembling the 



* This insect is the Bombyx grata of Fabricius. 



