Chapter III. The Distribution of Sexes | 5900 |
Chapter XII. The Halicti: a Parasite | 6394 |
Chapter VIII. Parasites | 6311 |
Chapter IX. The Theory of Parasitism | 7145 |
Chapter X. The Tribulations of The Mason Bee | 8035 |
Chapter III. Another Prober (Perforator) | 6944 |
Chapter XVI. A Parasite of The Maggot | 7315 |