TABLE OF CONTENTS. xvii 



Page 



Genus Thecla 868 



ExcuKsus XXXI. Sexual Diversity in Legs, Wings, and Scale Arrangement . . . 872 



Thecla Ontario 875 



Thecla liparops 877 



Thecla calanus 885 



Thecla edwardsii 892 



Thecla acadica 898 



Tribe Lycaenidi 902 



Genus Everes 905 



Excursus XXXII. Length of Life in Butterflies 909 



Everes comyntas 911 



Genus Cyauiris 918 



ExcuKSUS XXXIII. Digoneutism in Butterflies ; Intensity of Life in America . . 923 



Cyaniris pseudargiolus 927 



Genus Nomiades 948 



Excursus XXXIV. Origin of Varieties in Butterflies, Possible and Probable . . 950 



Nomiades couperi 953 



Genus Ruslicus 957 



Excursus XXXV. The Friends and Associates of Caterpillars 962 



Rusticus scudderii 964 



Tribe Chrysophanidi 970 



Genus Chrysophanus 972 



Excursus XXXVI. The Distribution of Butterflies in New England 975 



Chrysophanus thoe 977 



Genus Epidemia 982 



Excursus XXXVII. Local Butterflies 9S4 



Epidemia epixanthe 985 



Genus Heodes . 990 



Excursus XXXVIII. Psychological Peculiarities in our Butterflies 995 



Heodes hypophlaeas 998 



Genus Feniseca 1009 



Excursus XXXIX. Periodicity in the Appearance of Butterflies 1014 



Feniseca tarquiuius 1016 



FAMILY PAPILIONIDAE 1027 



Subfamily Pierinae 1033 



Tribe Rhodoceridi 1040 



Genus Callidryas 1043 



Excursus XL. Aromatic Butterflies 1047 



Callidrvas eubule 1053 



