ACADEMY OF SCIENCES. 21 



assumes a very strange appearance. It becomes quite black, every trace of 

 green being lost. The head and anal segment are then bright chestnut brown, 

 with paler dots; while the feet and legs are dark orange. There is a faint 

 trace of a yellow subdorsal line, and the spiracles are dark orange, with a 

 faint lateral line below them. Between their extremes are many varieties of 

 color. 



Chrysalis. Very long and cylindrical; light chestnut brown, Tongue case 

 wanting. Head and wing cases entirely without irrorations. Abdominal 

 segments darker posteriorly, very rough, and dotted with darker points. 

 Spiracles large, ovate, dark brown. 



Length, 2.10 inches Width, 0.40 inch. 



The caterpillar feeds on Rumex, Epilobium, Pelargonium and Fuschia. To 

 the last named garden plants, it is extremely destructive. It is full-grown in 

 June; changes to chrysalis from that month to the end of July, burying itself 

 rather deeply in the ground. The perfect insect appears from August to 

 October. It is quite common in gardens throughout this State. 



Sjnerinthus opthal minis. Bdv. 



Egg. Deposited separately on the food plant. Ovate, cream yellow, very 

 smooth and shining, surrounded by a ring of lake red color. Before the 

 exclusion of the larva, the eggs change to a pale, and afterwards to a dull 

 greenish blue, the reddish ring being lost. Deposited, July 20th, on willows. 



Young Larva. Emerged July 28th. Very pale yellowish green. Head very 

 large, almost monstrous, and of a darker shade. Caudal horn pinkish brown, 

 darkest at the tip. After the second moult the oblique yellow stripes make 

 their appearance, and there is then little change save in size, until the 



Mature Larva. General color pale apple green. Head rather large, truncate 

 in front, pyramidal, the two sides of the angle broadly and distinctly edged 

 with bright yellow, and enclosing a corrugated space, darker green than the 

 rest of the body. Mouth parts, and feet reddish brown. The whole of the 

 segments are marked with whitish tubercular dots. Along the sides is a 

 narrow stripe of pale yellow, and from the 4th, 5th, 6th, 7lh, 8th, 9th and 

 10th segments proceed some oblique yellow stripes, the 10th being the 

 broadest, and continued to the junction of the caudal horn, which is dull sky 

 blue, the extremity black. The anal segment is also edged with yellow. 

 Spiracles white, edged with reddish brown. Abdominal legs, dull apple green. 



Apparently double brooded, as I have taken fresh specimens of the perfect 

 insect in February and March, while the specimens from which the above 

 description is drawn, went into chrysalis in July, the moth emerging in the 

 middle of September. 



Fam. BOMBYCID^E. 



Halesidota Edwardsii. Packard. 



Egg. Laid in irregular clusters. Ovate, slightly flattened at the apex, 

 and often forced out of its regular shape by a large mass being crowded into 

 the fissure of the bark chosen as the place of deposition. Color, dull yellow, 

 paler on the upper half, and there slightly transparent. There is no apparent 

 sculpture, the whole surface being quite smooth and shining. 



