Chapter III. The Distribution of Sexes | 4994 |
Chapter XII. The Halicti: a Parasite | 5378 |
Chapter VIII. Parasites | 5407 |
Chapter IX. The Theory of Parasitism | 6275 |
Chapter X. The Tribulations of The Mason Bee | 6993 |
Chapter III. Another Prober (Perforator) | 6004 |
Chapter XVI. A Parasite of The Maggot | 6452 |