Chapter III. The Distribution of Sexes | 5936 |
Chapter XII. The Halicti: a Parasite | 6436 |
Chapter VIII. Parasites | 6364 |
Chapter IX. The Theory of Parasitism | 7182 |
Chapter X. The Tribulations of The Mason Bee | 8077 |
Chapter III. Another Prober (Perforator) | 6985 |
Chapter XVI. A Parasite of The Maggot | 7355 |