76 THE BUTTERFLIES OF THE WEST COAST 



to a distinctive name. But it should be borne in mind that they are 

 variations of infinite degree, only a few being well marked, the 

 most of them being so indefinitely marked that it is puzzling to 

 assign them either to the one name or to the other. 



4. Parnassius Menetriesi. Not elsewhere illustrated. 

 Plate I ; Figures 4, b, bb. 



Fig. 4, Male, Emigrant Gap, Cal., June 25, 1892; Author, 

 b. Female, Lake Tahoe, Cal., July 10, 1892; Author, 

 bb, Female, Lake Tahoe, Cal., July 10, 1892; Author. 

 Smaller than Clarius ; the dark markings of fore wings pale, 

 but not obsolescent ; hind wings of male like those of Clarius ; of 

 the female with some dark along the margin ; in both sexes the 

 red spots are small, the outer ones twinned in the female, and in 

 all of them in both sexes the red is pale and inclined to pink or 

 orange. 



I figure two examples of the female, showing variations. All 

 of these examples were taken in the typical habitats where the 

 Author, Mr. H. Edwards, captured his types of this form, and 

 I am not aware that any similar ones have been taken anywhere 

 else, though very likely some may have been taken elsewhere. 



5. Parnassius Baldur. 



Plate I ; Figvires 5, b, c. 



Fig. 5, Male, east base Sierra Nevadas, July 27, 1892; 

 Author. 



b. Female, summit Sierra Nevadas, July 30, 1892 ; 



Author. 



c. Female, underside. Sierra Nevadas, July 30, 1892; 



Author. 



Baldur is same size as Clarius, but the base of all wings is 

 darker, and the red spots are larger, and twinned, or with at least 

 a small black dot inside the outer red spot of the female hind 

 wings. There is always much red in the black spot near anal 

 angle of hind wings, and on the underside the red is more obvi- 

 ous than on the upper, as shown in Fig. c. The male also usually 

 shows a little red on the underside of the wings, near anal angle, 

 but it does not show on the upper side of the wings, and so is 

 not seen in the plate. 



As I see these varieties, Baldur appears the best of the lot, and 

 I think that it may well be called a full species. 



