' — 1 1 1 — 



as intermedia shows an indication of the basal band. Dahurica and ed- 

 wardsii arc identical, and differ notably in the very uneven, rather tremu- 

 lous — if such a term is allowable — transverse lines. The secondaries arc 

 more profusely spotted. A<haia is a more robust, shorter winged form, 

 with more rigid lines, the secondaries with a strong tendency to become 

 yellow, the black markings heavy, basal as well as outer, and sometimes 

 suffusing the entire wing. 



The other species known to me, in which the veins are all pale, are 

 arge and michabo, easily distinguished by the broadly pale margins and 

 the broad stripes — in fact in some hums of arge the pale markings be- 

 come so broad, that the black is fragmentary, consisting of angular marks, 

 ami it is not always easy to make out the pattern. Michabo may be a 

 good species. It is much redder than any argc I have seen, and the 

 markings are not nearly so broad ; and, while in arge the tendency 

 seems to be toward albinism, and reducing the black to fragments, 

 michabo retains the pattern intact and the tendency is rather to melanism, 

 the pale markings becoming more or less obsolete. On the other hand 

 dione A. & S. , which Mr. Neumoegen has recently restored to rank as 

 a species, is unquestionably a synonym of arge. A long series of Texan 

 specimens, from the extreme of immaculate forms both as to body and 

 secondaries and pallor of primaries, shows a regular and unbroken series 

 to our more typical northern form. Mr. Neumoegen unfortunately had 

 only the extreme Texan form and that certainly looks different at first 

 sight, but with between 30 and 40 specimens, most of them from Texas, 

 the gradation is easy and the relationship apparent. 



The remainder of the species known to me have the veins not pale, 

 the median vein only being sometimes discolored. The same type of macu- 

 lation exists as in the previous group, and the same divisions are possible. 



The first series is that in which the markings are usually complete, 

 well defined, and the transverse markings — the second band at least — 

 come below the submedian streak. 



The species are first : incorrupta, mexicana, geneura, nevadensis, 

 arizonensis, behrii, and autheola, which are probably all one, or at most 

 two species, to which also some of those not known to me may be refer- 

 able; and second, superba and bolanderi, which appear to be good 

 species. Bolanderi has very much the markings of incorrupta, but has an 

 additional band nearer to base of wing, which I have seen in none of the 

 preceding species. In superba, all the markings are very narrow and line. 



In the first series above enumerated there is great variation in the 

 ground color, some in the width or partial obsolescence of the bands, 

 and a sexual difference in the color of the secondaries. \ feel tolerably 

 certain that there is only a single species, and not a very greatly variable 



