152 THE CANADIAN ENTOMOLOGIST. 



g. B. Thuiellal Packard. 



Unknown to me except from the figure in the "American Naturalist/' 

 v. 5, p. 427, which does not indicate a dorsal nor an apical spot, though 

 Dr. Packard says that it resembles B. po7nifoliclla. I place it doubtfully 

 in this section. 



These, I believe, are the only described American species. 



CORRESPONDENCE. 



Montrral, July 14TH, 1873. 

 Dear Sir, — 



I should like to be informed how to distinguish the sexes of moths 

 and butterflies when there is no dissimilarity in the markings of the 

 wings, &c. ; also, how to distinguish A. cybele from A. aphrodite, and also 

 to recognize A. atlantis and A. montinus, as in Harris they are not 

 described at all, and Packard only mentions their names. I should also 

 like to know how to preserve spiders and bugs, &c, in the best way. 



Yours, &c., 



H. H. L., Montreal, P. Q. 



In the larger moths the sexes may be distinguished frequently by the 

 structure of the antennas, they being more widely pectinate in the male 

 than in the female. Where no distinguishing features of this kind present 

 themselves, the relative size of the bodies will enable one to decide this 

 matter, the bodies of the females being usually distended with eggs. A 

 more accurate method would be to examine the character of the generative 

 organs, for the structure of which we would refer our correspondent to 

 Packard's Guide, p. 16, 170, 237. 



In answer to the queries relating to cybele, apJwodite and atlantis, we 

 quote the following from that excellent work of Mr. W. H. Edwards' : 

 " The Butterflies of North America " : — 



" Cybele is the larger, and the difference in color between the sexes is 

 much less than in Aphrodite. In the latter the male is much smaller in 

 proportion to the female, is brighter colored than Cybele, and has very- 

 little brown at base of wings. The black markings are noticeably more 



