1893.] 14t> [Packard 



August 4 the same larvae had become 5.5 mm. in length. The body- 

 was now green, with uo yellow tints, and the two horns are black. The 

 head is scarcely as wide as the body, and the hairs are greener and less 

 conspicuous. 



Stage IF. — August 10-12. Length, 7-8 mm. Head, protlioracic segment 

 above and horns, with the suranal plate and anal legs jet-black. The 

 body is now dark green with yellowish-green lateral lines and black conical 

 acute warts. A median dorsal dark line ; a subdorsal pale yellowish-green 

 line, and below it a lateral tcider line of the same hue, separated by a very 

 narrow dark-green line from a broad lateral line which includes the lateral 

 swollen ridge, and a row of conspicuous black tubercles. Under side of 

 body dark green. The tubercles on the eighth and ninth segments larger 

 than those in front, suranal plate rough, tuberculated, black. Thoracic 

 horns large, long, black, nearly twice as long as the body is wide, and 

 one-third longer than the head is wide. Thoracic legs black ; abdominal 

 feet dark green, except the anal pair, which are black. 



Stage III. — August 20. Length, 13 mm. The specific characters now 

 appear, so that the larva? may be easily identified. The head is slightly nar- 

 rower than the body. Prothoracic plate distinct, black. The thoracic 

 horns are black, one-third longer than the body is thick. The body is 

 dark yellowish green, or rather olive green, witib two narrow yellowish dor- 

 sal lines, and a subdorsal and a lateral yellowish line on each side. The 

 spines are a little longer and sharper than before, otherwise the larva is 

 as in 8tage IL 



Partial Life History of Anisota virginiensis (Drury) (pellu- 

 ciDA A. and S.). 



For the larvae on which the following descriptions are based, I am 

 indebted to Joseph Bridgham, Esq., who sent them from Providence, 

 July 1. 



Stcoge II. — Length, 7 mm. Head large and full, dark umber, wider 

 than the middle of the body. The prothoracic segment is broad, with the 

 front and sides flaring ; upper surface dark chestnut. Body chestnut- 

 amber. From the second thoracic segment two very long, sparsely spin- 

 ulate, black horns arise, which are nearly half as long as the body ; they 

 are a little flattened at the tip, ending in two piliferous tubercles. There 

 are on all the other segments six rows of conical acute black tubercles ; the 

 eighth segment is armed exactly as the seventh. On the ninth is a single 

 median spine. The tenth segment or suranal plate is paler than the body, 

 and near the edge are six whitish tubercles ; and at the end are two long, 

 piliferous tubercles. The spiracles are distinct, being ringed with black. 

 The thoracic and middle abdominal legs are black ; the anal legs of the 

 same varnish-colored tint as the suranal plate. The skin of the body is 

 rough, with two lateral ridges, on the upper one of which the spiracles 

 are situated and on the lower a spine. Across each segment behind the 



