Diaphorodrilus, 76 Dichogaster, 15, 22, 28, 56, 72, 74, 76, 80, 82, 83, 84, 92, 99, 104, 116-120, 129, 134, 140 Didymogaster, 84 Digaster, 84 Dinodriloides, 87, 138 Dinodrilus, 16, 55, 87, 138 Diplocardia, 85, 133 Diplotrema, 83 Diporochaeta, 19, 80, 84, 87, 94, 111, 137 Dispersal of earthworms, 113 Drawida, 57, 81 Eclipidrilus, 39 Eisenia, 85, 108 Eiseniella, 41, 45, 46, 49, 66, 85 Eminoscolex, 75, 115 Enantiodrilus, 72 Enchytraeidae, 31, 41 Environment, 59 Eudichogaster, 80, 136, 141 Eudrilidae, 25, 26, 28, 29, 61, 66, 75, 78, 86, 116, 134 Eudrilus, 66, 75, 78, 79, 82, 83, 86, 97, 98, 101, 104, 105 Eudriloides, 27, 75, 114 Eupolygaster, 57, 81, 94 Eupolytoreutus, 76 Euscolex, 76, 95, 115 Eutyphoeus, 16, 17, 80 Families of worms, 14 Fimoscolex, 72 Fletcherodrilus, 26, 84 Fresh-water worms, 30, 44 Gardullaria, 76, 115 Genera, range of, 90 Geographical distribution, 129 Geoscolecidae, 20, 22, 23, 46, 59, 61, 71, 76, 79, 86, 104, 132, 134, 136, 137 Geoscolecinae, 22, 23, 71 Geoscolex (= Glossoscolex) Glossoscolex, 23, 72-74 Glyphidrilus, 48, 49, 77, 79, 83, 98, 137, 140 Gordiodrilus, 76, 78, 81, 92, 99, 106, 135 Haplodrilus, 73 Haplotaxidae, 42 Haplotaxis, 31, 42 Heliodrilus, 75, 115 Helodrilus, 79, 85, 90, 91, 103, 108, 112, 117 Henlea, 41 Hesperodrilus, 38 Hesperoscolex, 23, 58, 72, 73 Holoscolex, 72, 76 Hoplochaetella, 80, 87, 93, 137 Hormogaster, 24, 85, 131, 142 Hormogastrinae, 24, 85 Howascolex, 78 Hyperiodrilus, 30, 75, 115, 117, 129 Hypogaeon, 111 Ilyodrilus, 38 Ilyogenia, 22, 73 Iridodrilus, 76, 115 India, earthworms of, 79 Japan, earthworms of, 131 Kerguelen, earthworms of, 139 Kaffania, 75, 115 Kerria, 18, 73, 99 Kynotus, 23, 24, 29, 78, 95, 97, 131, 136 Lampito, 78, 80 Lamprodrilus, 39, 40 Leptodrilus, 86, 111, 112, 138 Libyodrilus, 28, 75, 115 Light, influence of, 67 Limicolae, 30, 47, 58 Limnodriloides, 31, 38 Limnodrilus, 38, 44 Liodrilus, 73 Lophochaeta, 38 Lumbricidae, 38, 57, 61, 62, 83-86, 90, 103, 104, 107 Lumbriculidae, 37, 41, 48 Lumbriculus, 39 Lumbricus, 85, 90, 108, 120, 122 Lycodrilus, 38 Macrochaetina, 37 Madagascar, earthworms of, 77 Maheina, 14, 78 Malay region, earthworms of, 82, 137 Malodrilus, 76, 115 Man, his influence in distribution, 106, 123 Maoridrilus, 11, 14, 87, 95, 138, 141 Marine worms, 50 Megachaetina, 75, 114 Megadrili, 44, 50 Megascolecidae, 14, 22, 29, 61, 75, 76, 79, 82, 87, 92, 99, 103, 136 Megascolecinae, 19, 22, 80, 82, 84, 87, 136 Megascolex, 19, 55, 62, 64, 80, 84, 93, 99, 137 Megascolides, 80, 84, 87, 93, 133, 134, 136