Explanation of [Plate XXXIII]

1. Catopsilia agarithe, Boisduval, ♂.5. Colias eurytheme, Boisduval, ♂,
2. Catopsilia eubule, Linnæus, ♂.under side.
3. Catopsilia eubule, Linnæus, ♂,6. Pyrameis huntera, Fabricius, ♂,
under side.under side.
4. Catopsilia philea, Linnæus, ♂.

Explanation of [Plate XXXIV]

1. Euchloë cethura, Felder, var.11. Pieris protodice, Boisd.-Lec., ♁.
morrisoni, Edwards, ♂.12. Pieris sisymbri, Boisduval, ♂.
2. Euchloë creusa, Dbl.-Hew., ♁,13. Pieris occidentalis, Reakirt, ♂.
under side.14. Pieris virginiensis, Edwards, ♂.
3. Euchloë ausonides, Boisduval, ♂,15. Pieris napi, Esper, var. pallida,
under side.Scudder, ♁.
4. Euchloë sara, Boisduval, var. flora,16. Pieris napi, Esper, var. oleracea-hiemalis,
Wright, ♂.Harris, ♂.
5. Euchloë sara, Boisduval, var. flora,17. Pieris napi, Esper, var. bryoniæ,
Wright, ♁.Ochsenheimer, ♁.
6. Euchloë sara, Boisduval, var. julia,18. Pieris protodice, Boisd.-Lec., var.
Edwards, ♁, under side.vernalis, Edwards, ♂.
7. Neophasia menapia, Felder, ♂.19. Pieris napi, Esper, var. acadica,
8. Pieris beckeri, Edwards, ♂.Edwards, ♁.
9. Pieris beckeri, Edwards, ♁.20. Kricogonia lyside, Godart, ♂.
10. Pieris protodice, Boisd.-Lec., ♂.21. Kricogonia lyside, Godart, ♁.

Explanation of [Plate XXXV]

1. Pieris monuste, Linnæus, ♂.9. Colias scudderi, Reakirt, ♁.
2. Pieris monuste, Linnæus, ♁.10. Colias interior, Scudder, ♂.
3. Pieris rapæ, Linnæus, ♁.11. Colias interior, Scudder, ♁.
4. Tachyris ilaire, Godart, ♂.12. Colias chrysomelas, Henry Edwards,
5. Tachyris ilaire, Godart, ♁.♂.
6. Colias alexandra, Edwards, ♂.13. Colias chrysomelas, Henry Edwards,
7. Colias alexandra, Edwards, ♁.♁.
8. Colias scudderi, Reakirt, ♂.14. Colias pelidne, Boisduval, ♂.
15. Colias eriphyle, Edwards, ♂.