1. Quelques nouvelles remarques sur l'éthologie dePolyergus rufescens Latr.

   • J. Dobrzanska
   • J. Dobrzanski

   OriginalPaper Pages: 1 - 8

2. Caste in the honey bee

   • Stanley E. Flanders

   OriginalPaper Pages: 9 - 16

3. Studies on the polymorphic workers of the army antDorylus (Anomma) nigricans Illiger

   • M. J. Hollingsworth

   OriginalPaper Pages: 17 - 37

4. Observations on the behavior ofBombus diversus Smith (Biological studies on Japanese Bees, XIII)

   • Setsu Miyamoto

   OriginalPaper Pages: 39 - 56

5. Biology of the primitive social bee,Halictus duplex Dalla Torre II. Nest structure and immature stages

   • Shôichi F. Sakagami
   • Kazuo Hayashida

   OriginalPaper Pages: 57 - 98