The Cambridge natural history, Vol. 06 (of 10)
CHAPTER I
HYMENOPTERA PETIOLATA _CONTINUED_—SERIES 2. TUBULIFERA OR CHRYSIDIDAE.—SERIES 3. ACULEATA—GENERAL—CLASSIFICATION— DIVISION I. ANTHOPHILA OR BEES 1
The Cambridge natural history, Vol. 06 (of 10)
HYMENOPTERA PETIOLATA _CONTINUED_—SERIES 2. TUBULIFERA OR CHRYSIDIDAE.—SERIES 3. ACULEATA—GENERAL—CLASSIFICATION— DIVISION I. ANTHOPHILA OR BEES 1