viii EXPLANATION OF PLATES. 



Plate 5. — The oldest New England Butterflies . . 152 

 Fig. 1, Brenthis montinus. Figs. 2-5, Egg, caterpillar, 

 chrysalis, and imago of Oeueis semidea. 



The early stages are more or less enlarged. 



Plate 6.^ — Scent-scales or Androconla 176 



Fig. 1, From surface of fore-wing of Argymiis atlantis. 

 Fig. 2, From fold of hind-wings of Laertias philenor. 

 Fig. 3, From surface of fore-wing of Oeneis jutta. Fig. 

 4, From surface of fore-wing of Cyaniris pseudargiolus. 

 Fig. 5, Pouch on hind-wing of Anosia plexippus, con- 

 cealing androconia. Fig. 6, From surface of fore wing 

 of Pieris oleracea. Fig. 7, Portion of one of the veins 

 of fore-wing of Speyeria idalia, showing tips of feath- 

 ered androconia mingled with the ordinary scales. Fig. 

 8, Part of surface of fore-wing of Callidrjas eubule, 

 showing partially erect andronia. 



All the drawings are greatly magnified. 



Plate 7. — Butterflies common to Two Worlds . . 208 

 Fig, 1, Vanessa cardui. Fig. 2, Euvanessa antiopa. Fig. 

 3, Vanessa atalanta. 

 Plate 8. — A polygoneutic and polymorphic Butter- 

 fly, Iphiclides ajax 248 



Fig. 1, The spring brood (marcellus). Fig. 2, The summer 

 brood (ajax). 



Plate 9. — Color ADA N fossil Butterflies 272 



Fig. 1, Prolibythea vagabunda. Fig. 2, Barbarothea flo- 

 rissanti. Fig. 3, Jupiteria charon. Fig. 4, Prodryas per- 

 sephone. Fig. 5, Lithopsyche styx. Fig. 6, Apanthesis 

 leuce. 



Plate 1, Figs. 2, 3 ; Plate 2, Fig. 2 ; Plate 5, Figs. 3, 4 ; and 

 Plate 8, Fig. 1, are reproduced by the author's kind permission 

 from Edwards's " Butterflies of North America." 



