XXXJi, '21] ENTOMOI.OCICAL NEWS 207 



spots standing out in clear contrast, the 9 ogallala is largely fulvous, 

 with hroad fuscous border on primaries, not clearly defined, the pale 

 fulvous irrorations over fuscous borders forming fairly well-defined 

 pale spots in apical portion ; there is a rather prominent, almost square, 

 semi-translucent spot under the cell, midway between base and outer 

 margin, and a smaller triangular one above it and nearer outer mar- 

 gin; a fuscous patch between the large quadrate spot and base of 

 wings. Secondaries fulvous with dentate fuscous border, fuscous costal 

 edge, anal angle and inner margin. On under surface the pale spots 

 of primaries show through, but the secondaries are unspotted. 



Allotypc male, captured at Omaha, Nebraska ; hole/type 

 female, also captured at Omaha, both now in the collection of 

 R. A. Leussler. Ten male and five female paratypcs from 

 Omaha, West Point, Lincoln and Valentine, Nebraska, and 

 Sioux City, Iowa. 



An examination of the genitalia of pawnee and ogallala, by 

 Dr. A. W. Lindsey, indicates that the two forms are con- 

 specific. A male pawnee which had been compared with speci- 

 mens pronounced by Mr. E. A. Dodge to be typical (the type 

 having been destroyed by fire) was used for this purpose. It 

 is our opinion that both forms will prove to be conspecific 

 with ottoc. In such case the following arrangement would 

 seem to be proper 



Painpliila ottoe Edw/ 



form pau'iicc Dodge 

 form ogallala Leussler 

 race inontana Skinner 



As a general thing pawnee flies in late August and early 

 September and ogallala in late June and early July. There are 

 exceptions to this rule, however, and we cannot therefore con- 

 sider them strictly seasonal forms. Neither can we regard 

 them as geographic races, since both occupy the same territory. 



The Geographical Distribution of the Machaon-Group of the 

 Genus Papilio (Lep., Rhop.). 



The view has been expressed that the various species of the Genus 

 Papilio. which are related to P. machann Linnaeus, and are found in 

 Eastern Asia and in North America, thence extending southward into 

 South America, arc derivatives of the European form first named by the 

 Father of Natural History. As a student of paleontology and phylog- 

 eny, I wish to place upon record my dissent from this view. The 

 metropolis of this group in my judgment is the western hemisphere, 

 rnd the original center of dispersion was the region covered by the 

 northwestern states of the I'nited States rind British Columbia. From 

 this center of dispersal have radiated (lie various forms, and /'. inaeliaini 

 represents the extreme westward extension of the group of allied forms. 



This view is strictly in accord with what we now kno\\- as to the 

 origin of certain mammalia; e. <i., the horse and the camel. 



I have not time at the moment to go deeply into the subject, but 

 desire to state that it appears to me far more reasonable, in view of 



