162 THE CANADIAN ENTOMOLOGIST. 



Mr. Thaxter has described Danais Atxhippus as flocking in diis 

 manner, in Florida, but this seems to be a habit at certain seasons, during 

 the day as well as night. Chariionia would seem to roost in crowds at 

 night only, and to disperse during the day for feeding, like so many 

 pigeons. I find nothing of this in books, nor have I been able to find 

 that any of the preparatory stages of this species have been figured or 

 even described by authors. I have a complete set of drawings of the 

 egg, larva at each stage, and chrysalis, and shall in due time give a, Plate 

 to them in Butterflies of N. A. 



INSECTS OF THE NORTHERN PARTS OF BRITISH AMERICA. 



COMPILED BY REV. C. J. S. EETHUNE, M. A. 



From Kirby's Fauna Boreali- Americana : Insecta. 



(Continued from Vol. xi., p. 154.) 



FAMILY NOCTUIDiE. 



429. Plusia rectangula "A'/V'^y. — Expansion of wings ii'2 inch. 

 Taken in Canada by Dr. Bigsby. 



Body cinereous, underneath whiter. Antennae testaceous ; thorax 

 crested ? as the scales are mostly rubbed off this cannot however be 

 positively asserted ; wings incumbent ; primaries with a subcrenate edge ; 

 inclining to ash-colored, clouded with black, with a subramose rectangular 

 ■somewhat silvery spot, extending from near the base to the middle of the 

 wing ; between which and the apex is a narrow white wavy band, edged 

 with black ; and still nearer the margin a zigzag transverse black line ; 

 the secondary wings are plicatile, cinereous, and dusted at the apex with 

 brown. 



N. B. The silvery rectangular spot in the primary wings of this 

 insect, when they are brought near to each other, forms a quadrangular 

 area very much resembling a picture in a silver frame. 



[307.] 430. Plusia gamma Linn. — Expansion of the wings i^ 

 inch. Taken in Canada by Dr. Bigsby. 



