| CHAP. | PAGE | |
| Preface | [v] | |
| I. | Introductory | [1] |
| II. | The external structure of a flea | [21] |
| III. | The mouth-parts and sense-organs | [38] |
| IV. | The internal organs of a flea | [52] |
| V. | The Human flea and other species | [62] |
| VI. | The Chigoes and their allies | [74] |
| VII. | Fleas and Plague | [83] |
| VIII. | Rat-fleas and Bat-fleas | [97] |
| Appendix | A. | Systematic view of the order Siphonaptera | [108] |
| ” | B. | A list of British fleas and their hosts | [110] |
| ” | C. | On collecting and preserving fleas | [113] |
| ” | D. | Bibliography | [118] |
| Index | [122] | ||
LIST OF ILLUSTRATIONS
| 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] |