LEPIDOPTERA : ZYGJENIDJE. 395 



trunk of the tree, near the roots ; when hatched, the 

 borers penetrate and devour the inner bark and sap- 

 wood. When about a year old they make their cocoon, 

 become chrysalids, and from June to October come forth 

 in the perfect state. It also attacks the cherry. 



The Currant-bush yEgerian, T. tipuliforme, Harr., ex- 

 pands about three fourths of an inch, wings transparent, 

 veined, fringed with black, and with a copper-tinged band 

 across the tips of the first pair ; body blue. The eggs 

 are laid singly near the buds of the currant-bush, and, 

 when hatched, the caterpillar penetrates to the pith, which 

 it devours, forming a burrow several inches long, causing 

 the bushes to sicken, and frequently to break off. The 

 moth comes forth in early summer. 



The Genus ALgeria contains the Squash-vine vEgeria, 

 AL. curcurbitce, Harr., which expands an inch to an inch 

 and a half, the body orange color, spotted with black, and 

 hind legs fringed with long orange and black hairs ; only 

 the hind wings transparent. In the caterpillar state it de- 

 vours the squash and other vines in the month of August, 

 perforating the stem near the ground. 



ZYG^NID^E, Latr. This Family comprises lepidoptera 

 which have the body slender, wings rather narrow and 

 covered -with powdery scales. They are called Glauco- 

 pidians, from the glaucous appearance of some of them. 



The Genus Etidryas comprises the Beautiful Wood- 

 Nymphs. The Wood-Nymph, E. grata, Fabr., expands 

 one inch and a half to one inch and three fourths, the 

 fore wings pure white, with a broad stripe along the front 

 edge for more than half its length, and a broad band 

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

 the band edged on the inside with olive green, and marked 

 towards the edge with a wavy white line ; under .side 

 of the fore wings yellow, with a round and kidney-shaped 

 black spot. The hind wings are yellow, with a broad 



