45 



season of 1893 several specimens of the variety glaucus which were 

 curiously splotched with yellow, and is inclined to attribute this ten- 

 dency to variation to the comparative drought which characterized tlie 

 summer in Kansas. 



The insect most nearly resembles the black form of glaucus. The 

 wings of the left side are black in general coloring. The primary of the 

 right side is also black, while the secondary of the same side is a bright 

 and beautiful male wing, the yellow being normal in all respects except 

 that the four spots on the outer border are narrower than in the normal 

 male. The three dark wings are curiously and irregularly splotched 

 with yellow, as indicated in the figure. The tails of the two hind- wings 



Fig. 15 — Papilio turnus var. glaiicyx: alierraut adult, ujiper surface — natural aizf* (original). 



are different in shape, that of the right being the normal male tail and 

 that of the left the normal female tail. The reentering excision at the 

 anal angle of the secondaries is more pronounced on the left wing than 

 on the right, and the orange spot is larger. The orange spot on the 

 upper and outer angle of the secondaries is present on the left wing, 

 but is slightly smaller than the normal glaucus female, while on the 

 right wing it is very minute and resembles that of the male. On the 

 undersides of the wings the right secondary resembles the underside 

 of the secondary of the yellow male, except that the wings are a little 

 more deeply lined with black and above the black margin the orange 

 is a little more conspicuous. The underside of the left secondary 

 resembles in all respects the underside of the right, except that its 

 3613— No. 1 4 



