COLOI \\l> "I 





and tli- genitalia. In New Kn^laiid j.ihriiii hibernate- and produce! 

 umbrt^a. a- a rule, while //;;/'' >ihricii. 



The little blue butterlly, ('yaniris f)srn<!,ir^io!u : 

 niorphic to a remarkable decree. In the high latitn 



:ris f>xfniliirf>inlns; A, form lucia; B, violacea; C, pseudargiolus proper. 



X;itur;il size. 



single brood (Incia} occurs. About Boston the same spring brood ap- 

 pears, but under two forms: an earlier variety (lucia), which is small, 

 with large black markings beneath; and a later variety (violacea). 

 which is typically larger, with smaller black spots, though it varies 

 into the form lucia. Finally, 

 in summer, a third form 

 miargiolus proper) 

 appears, as the product of 

 lucia or else the joint prod- 

 uct of lucid and violacea, and 

 this is still larger, but the 

 black spots are now faint. 

 In the warm South the spring 

 form is I'iolacea, but while 

 some of the males are blue, 

 other- are melanic, as just 

 mentioned a dimorphic con- 

 dition which does not occur 

 in the North. Violacea then FlG - 235. //>///</;</< v a j,i x , form tdnmonides, on 



flower of button bush. Reduced. 



produces pseudargiolus^ in 



which, however, all the males are blue. 



Iphiclides ajax (Fig. 235) is another polymorphic butterfly whose 

 life history is complex. The three principal varieties of this species, 

 known respectively as marccllns. tclamonides and ajax, differ not only in 

 coloration, but also in size and form; marcellus appears first, in spring; 

 tclnnwnidcs appears a little later (though before marcellus has disap- 

 peared); and ajax i> the summer form; as the season advances the 



