Vol. Xxiv] ENTOMOLOGICAL NEWS. 151 



are slightly paler and perhaps clearer in tone of color than the 

 usual form ; they are also the smallest form I know, being, 

 with a few exceptions, smaller than our polisperchon, the spots 

 below are visible but quite minute in some, whilst in others 

 the black has disappeared, leaving only the white behind ; there 

 is also a peculiar snowy hoariness over the whole under side. 

 There is, of course, this tendency with all forms of this spe- 

 cies, but it is specially prominent in this small form. Perhaps 

 the most interesting point of all is the fact that I have two 

 specimens that agree exactly in the color of the upper side with 

 decolorata Stgr., this species being of a peculiar grayish blue 

 -almost as much gray as blue a form that obtains in Hun- 

 gary and the Balkans and is distinct from coretas and argiades. 

 Staudinger also records it from Ferghana (Eastern Turkestan) 

 under the name decolor. He describes both as, "viridi-coeru- 

 k'us." I have only been able to make one preparation of the 

 genitalia of the latter, but this inclines me to believe that they 

 are the same species. My late friend (Dr. Staudinger) thought 

 that the wide divergency of habitat with no connecting link 

 between must involve a specific difference. I think, however, 

 that this is not the case and that decolorata should sink to 

 decolor Stgr. These specimens again confirm my view that, as 

 with comyntas so with amyntula, we have a development of 

 coretas, not of argiades, decolor being a good species but 

 nearer the former than the latter. The under side of these 

 two special specimens is similar to the others from Aweme. 

 The Calgary form has been said to be very specialized ; I 

 cannot, however, find where that is so. It is true I have but 

 a dozen from that locality, but I cannot specialize these either 

 from outward appearance or by the genitalia. I also have a 

 dozen specimens from the High River, Alberta, which are 

 quite similar to my Calgary ones. 



All my correspondents unite in saying that this species is 

 generally single-brooded, the reason probably being that the 

 larvae feed on Astragalus crotalariae, so that, if they only eat 

 the seeds, it is evident that there can be but one brood annu- 

 ally. This would also apply if during the early stages they 



