| Male Oriental rat–flea | frontispiece | | FIGURE | | PAGE | | 1. | The larva of a flea | 6 | | 2. | Types of genal and thoracic combs of a flea | 26 | | 3. | The hind leg of a flea | 30 | | 4. | The mouth-parts of a flea | 43 | | 5. | The antenna of a flea | 47 | | 6. | The alimentary canal of a flea | 53 | | 7. | The head of a female dog-flea and a female cat-flea | 71 | | 8. | Pregnant female of Dermatophilus cÆcata | 81 |
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