142 THE CANADIAN ENTOMOLOGIST. 



Arctic variety Catena, to be able also to compare specimens from the 

 Asiatic part of its boreal faiinal range with the American representatives 

 of this widely diffused species. 



Dr. Staudinger had the kindness to send at my request from his rich 

 collections a supply of these from widely separated regions of Northern, 

 Middle and Eastern Asia (from Amasia, Lebanon and other provinces, 

 and from the Amoor country). There are among them interesting forms, 

 differing more or less, and in some instances very materially, from the 

 Middle Eurojjean type. The expectation tliat perhaps one or another of 

 these might be identical with an American form, has not been realized. 

 Occasionally, it is true, an approach occurs, but for the most part their 

 variations from the type lie in a different direction than toward the 

 American forms. They afford, however, ample evidence of the great 

 variability of the species imder the pressure of various climatic and other 

 external conditions. 



In the structure of the body, and in the form of the antennae, palpi 

 and legs, I have been able to find no difference between Scudder's species 

 and Comma. I was unable to examine the male abdominal appendages. 

 The coloration of the under side varies considerably, but offers no avail- 

 able characteristics for the separation of individual forms. Sometimes the 

 secondaries are distinctly veined. Also as to the bright or dull colors of 

 the square spots, their extraordinary variation of size, the presence or 

 absence of their black border, no exact forms can be defined, as all these 

 pass into each other by imperceptible gradations. 



Juba differs from Comma, as also from its American congeners, in 

 several particulars. I compare four specimens of this form (one pair 

 from Utah and another from California), all unfortunately more or less 

 worn and mutilated. They answer well to Scudder's description and illus- 

 tration (Mem. Boston Soc. of Nat. Hist., vol. ii., p. 349, pi. x., figs. 19, 

 20), except that the primaries of the female are more pointed than shown 

 in fig. 20. (i). Juba is larger than Comma. (2). It has a somewhat dif- 

 ferent outline of wings, a long, slightly concave costal margin and a more 

 oblique border of the primaries, which causes the apex of the wings to 

 project more prominently. (3). The ground color of the primaries is a 

 bright orange, especially in the female ; the brown marginal band very 

 dark, and toward the lower end much more sharply defined than in 

 Comma. It presents on the inner side strong rounded or toothed projec- 

 tions, while the bright ground-color on the branches of the median vein 



