2001, 60 pages, 4 color photos on cover. Provides a listing of all 722 species of butterflies recorded in North American north of Mexico, including Hawaii. Space is provided before and after each species name to add a checkmark, and to fill in date and locality information. Gives scientific and English names adopted by NABA, with changes from first edition discussed in commentary section. Lists species in taxonomic order. Paperback; 7 x 10″.