

[65] ON SOME SPECIES OF NISONIADES. 177 



had previously come under my observation. The series, of six 

 gray-centered and black-bordered spots crossing the cell par- 

 allel to the outer transverse row, which usually forms an 

 interrupted series, in these, blend in a connected band, nearly 

 as conspicuous as the outer row. This species, I believe, has 

 not been previously reported from Colorado. 



Nisoniades Martialis Scudd. 



Oae of the two examples of this species corresponds with 

 our usual New York forms, and the other, in the more sub- 

 dued tone of its ornamentation, is similar to the individuals 

 of our second brood, appearing in July and August. It is 

 unfortunate that no dates of capture are appended to these 

 specimens. 



Nisoniades Persius Scudd. 



The examples which I refer to this species, present some 

 differences as compared with our eastern forms. In Mr. 

 Mead' s Report, ut cit., Mr. Scudder is quoted as having noticed 

 some points of difference. Although Mr. Mead represents this 

 species as the most common of its genus in Colorado, I have 

 but three examples before me ; and upon so small a number, I 

 am unable to form a decided opinion. 



Nisoniades Juvenalis Fabr. 



I have, with some hesitation, labeled several examples 

 agreeing among themselves, with this specific name, as I am 

 unable to trace any constant features in which they differ from 

 some of our New York forms. I am, however, of the opinion, 

 that in the collections made in the vicinity of Albany, two 

 species are included in our N. Juvenalis. Marked differences 

 are noticeable in size, shape of wings, and markings, which 

 are hardly consistent with a single species. The smaller form 

 is that in which are seen more pointed wings and narrower, 

 less rounded outer margins, and plainer ornamentation. Still, 

 I have not been able to discover any marked features by 

 which a separation can be made. The larger form with broader 

 wings and conspicuous markings is of less frequent occurrence 

 than the other. A large series from Center, N. Y., submitted 

 some years ago to Messrs. Scudder and Burgess for the ex- 

 amination of the genitalia, contained both of these forms, but 

 were all returned to me labeled as N. Juvenalis. 



