A popular work by an American entomologist. Contains a chapter on fleas and plague. Some good micro-photographs of fleas. Bibliography. INDEX Abdomen, 31 Ancestors of fleas, 3 Antennæ, 25, 47 Aphaniptera, 4 Aptera, 34 Arachnids, 1 Arctomys, 95 Armadilloes, 14 Arthropods, 1, 2 Bacillus pestis, 84 Badger, 9, 68 Baker, Mr Carl, 70 Bat-fleas, 24, 106 Bat-fleas, head-flaps of, 27 Bats, 12, 107 Bettongia, 15 Bibliography, 118 Black death, 86 Blood-system, 60 Blue, Doctor, 98 Boden, Mr, 18 Bombay, Plague in, 95 Brain, 45 British fleas, list of, 110 British fleas, number of, 11 Brown snake, 15 California, plague in, 98 Carnivora, 14, 16 Caterpillars, attacked by fleas, 18 Catesby, 75 Cat-flea and dog-flea distinct species, 70 Catholic and Protestant, 9 Caudal stylets, 37 Ceratopsyllidæ, 17, 106, 110 Ceratophyllus anisus, 103 C. farreni, 11 C. fasciatus, 89, 96, 102 C. gallinæ, 70 C. gallinulæ, 70 C. rothschildi, 11 C. vagabundus, 11 Chigoes, 74 —— on bats, 75 —— burrowing habits, 78 —— distribution of, 83 —— on parrot, 75 —— pregnant females of, 81 —— post-oral process of, 27 —— on rats, 101 —— rostrum of, 77 Chitin, 21 Classification of fleas, 17 Claws of feet, 31 Coleoptera, 34 Collection of fleas, 113 Combs, 26 Corsica, fleas attack flies in, 19 Ctenocephalus canis, 8, 9, 16, 63, 70 C. erinacei, 63 Ctenophthalmus agyrtes, 103 C. assimilis, 103 Dahl, 35 Dampf, 18 Dermatophilus cæcata, 82 D. penetrans, 69, 74, 83 Diemenia superciliosa, 15 Diptera, 4, 5 Dissection, 61 Distribution, 11, 12 Dog-flea, development of, 8 Dog-flea and cat-flea distinct species, 70 Dolichopsyllus stylosus, 22 Echidna, 15 Echidnophaga ambulans, 15 Edentata, 14 Eggs, 5 Epidermis, 21 Epimeron, 31 Erinaceus, 68 Excreta, 57 Eyes, 24 Field-mouse, 9, 25 Fossil fleas, 18, 19 Fowl-flea, 10 Fracticipita, 110 Frontal tubercle, 50 Fruit-Bats, 107 Ganglia, 45 Gannet, 11 Genitalia, 51 Gerbillus, 68 Gizzard, 54 Gophers, 95 Ground-squirrels, 95, 98 Guinea-pigs, 66, 93 Gullet, 54 Hankin, 88 Hatching spine, 5 Head, 28 Hearing, 50 Heart, 60 Hedgehog, 9 Hemiptera, 34 Heymons, 31 Hooke, Robert, 47 Hosts, of British fleas, 110 —— change of, 10 —— meaning of, 8 House-martin, 10 Human flea, absent from Sahara, 64 Human flea, from badgers, 68 Human flea, described, 63 Human flea, from Mexican Indians, 67 Human flea, mouth-parts, 67 Human flea, from New Guinea, 65 Hypopharynx, 39 Hystrichopsylla talpæ, 22 Insectivora, 13 Integricipita, 110 Ischnopsylla unipectinata, 13 Jehangir, Emperor, 86 Justinian, Emperor, 86 Kitasato, 84 Klebs, Professor, 19 Labial palpi, 48 Labium, 40 Labrum, 42 Larva, 5, 7, 36