DESCRIPTION OF FRONTISPIECE. 
PROTECTIVE MIMICRY AMONG BUTTERFLIES. 
Fic. 1.—Heliconius euvcrate, one of the Heliconiine, which are naturally immune from 
the attacks of birds. From Brazil. 
Fic. 2.—Perhybris pyrrha, female (Pierine), which is edible by birds but probably 
secures immunity by means of its resemblance to such species as No. 1 or No. 4. 
Brazil. 
Fic. 3.—Perhybris pyrrha, male, to show the colorational basis from which the 
mimetic pattern of the female has been developed; under surface on right. Brazil. 
Fic. 4.—Mechanitis lysimnia (Ithomiine), naturally immune, but nevertheless 
sharing a common color pattern with Heliconiine (No. 1). Brazil. 
Fic. 5.—Papilio merope, male, having three forms of females (Nos. 7, 9 and 11), 
which mimic, respectively, three species of Danaine (Nos. 6, 8 and 10). South 
Africa. 
Fic. 6.—Danais chrysippus, immune, mimicked by No. 7. South Africa. 
Fic. 7.—Papilio merope, female, which mimics No. 6. South Africa. 
Fic. 8.—Amauris niavius, “‘ model” of No. 9. South Africa. 
Fic. 9.—Papilio merope, female, “‘ mimic”? of No. 8. South Africa. 
Fic. 1o.—Amauris echeria, ‘“‘ model” of No. 11. South Africa. 
Fic. 11.—-Papilio merope, female, “‘ mimic’? of No. ro. South Africa. 
The figures are about one half the natural size. Compiled, largely from Trimen 
and Weismann. 
