THE CANADIAN ENTOMOLOGIST. 



the third on the submedian nervure. A subterminal sinuate row ; the 

 first double, situate in the costo-subcostal interspace midway between its 

 other spot and its extremity. A black streak running from this spot 

 sharply outward to next spot in subcosto-median interspace, which is 

 followed in the succeeding interspaces by five more small transverse spots. 

 All the spots of secondaries with a black border. 



$ . Expands i j4 in. General coloration a little lighter than in the 

 male. Primaries above with two spots at extremity of disc. An irregular 

 transverse band commencing with three subcostal spots, the upper one 

 not removed outwardly as in the male ; the fourth twice its own width 

 nearer margin : the fifth in a line with first three ; the sixth twice its 

 width nearer base ; the seventh largest, removed its width internally ; the 

 eighth double or with upper half obsolete. Lower surface of primaries 

 with upper markings repeated. Secondaries with basal row inconstant. 

 First three spots of subterminal row running toward outward margin ; the 

 others running at a right angle from third, toward inner margin. In one 

 $ the subterminal row of secondaries is indicated above by a few lighter 

 scales, i $ : 2> ¥> Jacksonville, Fla. March 22nd, 23rd, 1875. 



ON PLATYSAMIA COLUMBIA Smith. 



BY F. B. CAULFEILD, MONTREAL, P. Q. 



In No. 4, Vol. ii, of the " Bulletin of the Buffalo Society of Natural 

 Sciences," Dr. H. A. Hagen gives an interesting paper on this moth and 

 its parasites. 



After a brief review of the previous literature of the species, Dr. 

 Hagen says : " If Columbia should happen not to be a distinct species, it 

 must be either a variety of some other species or a hybrid of two 

 species." As regards its being a variety of cecropia, Dr. Hagen says that 

 he has examined large numbers of cecropia, but never saw a variety 

 agreeing with Columbia ; one small and dark colored male he in deed at 

 first thought was an intermediate form, but on comparing it carefully he 

 found it to be cecropia, though a somewhat remarkable variety ; he there- 

 fore comes to the conclusion that Columbia is not a variety of cecropia. 



