IN THIS ISSUE
Date of Publication: June 1974
| The butterfly fauna of the Sacramento Valley, California | Arthur M. Shapiro | |
| Extended flight periods of coastal and dune butterflies in California | Robert L. Langston | |
| Habitat: Brephidium pseudofea (Lycaenidae) | John B. Heppner | |
| The early stages of various species of the genus Dirphia (Saturniidae) | Brian O.C. Gardiner | |
| A new species of Ormiscodes (Dirphiella) from Mexico (Saturniidae: Hemileucinae) | Julian P. Donahue and Claude Lemaire | |
| A new subspecies of Euphydryas editha from the Channel Islands of California | Thomas C. Emmel and John F. Emmel |
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