THE CANADIAN ENTOMOLOGIST. 283 



are white, instead of dull red bordered internally with white." Here, 

 I think, we get the most distinguishing point of difference between the 

 two moths. There is no symptom of red in the bands of Columbia. The 

 " narrow, white, transverse band," which in some of the specimens would 

 be better termed a line than a band, shades externally into the dark 

 grey of the border, whilst internally it is edged with solid black, which 

 merges into the dark brown of the middle area. This appears to me to 

 be the most conspicuous and constant difference between the two species, 

 and would of itself make it quite easy to separate the moths, regardless 

 of size or depth of colouring. " It wants the broad white band so con- 

 spicuous on the anterior border of the secondaries of 6". cecropia, and also 

 the reddish tints and markings near the apices of the primaries." The 

 band is not so clear a white, or so broad, but is edged with black, which 

 is absent in Cecropia ; the tints on the apices are a distinction of degree, 

 and but a slight one at that. 



" The female differs from that of 6". cecropia in having the palpi, legs 

 and abdominal rings dark brown, or almost black, instead of dull red." 

 One of the Coluvibias is not distinguishable from Cecropia in that respect. 

 " The discal spots of the primaries are linear, obscure and parallel to the 

 transverse band, instead of broad, conspicuous and parallel to the costal 

 border." The spots are more linear, but with a decided tendency toward 

 lunate, thereby being about as much in line with the costal border as 

 with the transverse band. And so far from being obscure, from the 

 absence of red in them they are more conspicuous than in Cecropia. 

 There is a male Cecropia before me that would answer that description 

 better than any of the Cohimbias. " The discal spots of the secondaries 

 are small and almost, round, instead of large and somewhat triangular," 

 No difference except in size, and the absence of red in the spots of 

 Columbia. " As in the male, it has the white on the hind part of the 

 thorax, and wants the white on the anterior border of the secondaries, 

 and also the red on the apices of the primaries, on the discal spots, and 

 on the transverse bands." What I have said on these parts of the male 

 answers also for those of the female. 



So, then, the only points that are left to me whereby to unmistakably 

 separate Columbia from Cecropia are the narrow, dull white, transverse 

 band edged internally with black, and the total absence of a red band. 

 These might not separate it from Gloveri and Ceanothi. I am not 

 famihar with those species. 



