Chapter III. The Distribution of Sexes | 5792 |
Chapter XII. The Halicti: a Parasite | 6268 |
Chapter VIII. Parasites | 6185 |
Chapter IX. The Theory of Parasitism | 7039 |
Chapter X. The Tribulations of The Mason Bee | 7909 |
Chapter III. Another Prober (Perforator) | 6834 |
Chapter XVI. A Parasite of The Maggot | 7187 |