Galls on Corals, 211 Gamble, F. W., on colour-changes, 111 Gammaridea, eyes of, 154 _Gammarus_, 53; distribution, 172; in Lake Baikal, 183 Ganglia of Lobster, 20 Garstang, W., on habits of Masked Crab, 100 Gastric Mill of Lobster, 17 Geographical distribution of Lobsters, 32; of Crayfishes, 174 Gecarcinidæ, 190 _Gecarcinus_, 190; supposed metamorphosis, 192 _Gecarcoidea_, 190 _Gelasimus_, 188; habits, 106; colour-changes, 111 Generative organs of Lobster, 27 Giant Crab, 64 Giesbrecht on luminosity of Copepoda, 150 Gill chamber of Lobster, 18 Gills of Lobster, 12, 18; of Mysidacea, 48 Globigerina ooze, 119 _Glomeris_, a Millipede, 3, 203 Glyphæidæ, 268 Gnathobases of Trilobites, 259 _Gnathophausia_, 48 Goose Barnacle, 42 Gosse, P. H., on Porcelain Crabs, 115 Grapsidæ, 180 _Grapsus_, 107 Green gland, 19 Gribble, 253 Guilding, L., on development of Land Crabs, 193 Guinea-worm, 252 Gulf-weed Crab, 155; on Turtles, 208 Habitations of shore Crustacea, 95 _Hæmocera_, 229 Hæmoglobin in Branchiopoda, 165 Hairs of Lobster, 22 Hall. See Spencer and Hall Halocypridæ, 141, 144; luminosity, 151 _Hapalocarcinus_, 211 Head of Lobster, 7 Hearing, sense of, in Lobster, 22 Heart of Lobster, 17 Hermaphroditism of Cirripedia, 43; in Isopoda, 52; of Cymothoinæ, 221; of Epicaridea, 223; of Rhizocephala, 231 Hermit Crabs, 61; of seashore, 91; of deep sea, 124, 136; terrestrial, 194; commensals, 213; Isopods parasitic on, 221 _Heterocarpus_, 125 Hickson, S. J., on _Caridina_, 248 _Hippa_, 102 Hippidea, 62; habits, 102 _Hippolyte_, colour-changes, 111 _Holopedium_, 170 Homaridæ, 33 _Homarus_, 32; fishery, 238 Homolodromiidæ, 134; fossil allies, 269 Homologous organs, 10 Hoplocarida, 64 _Huenia_, 109 Huxley, T. H.: on Barnacles, 115; on distribution of Crayfishes, 176 _Hyas_, masking habits, 96 _Hyperia_, 142; on Jellyfishes, 212 Hyperiidea, 141; eyes, 154 Hypoplankton, 143 Hypostome, 259 _Inachus_ infected with _Sacculina_, 235 Intestine of Lobster, 16 Isopoda, 51; deep-sea, 131; fresh-water, 172; subterranean, 186; land, 199; in Sponges, 210; parasitic, 218; wood-boring, 253; fossil, 266 _Jasus_, 241 Jellyfishes, Amphipods on, 212 Keeble, F., on colour-changes, 111 Kidney, 19 _Koonunga_, 264 Land Crabs, 189; injuring crops, 253 Land Hermit Crabs, 194 Land-hoppers, 189 Langouste, 241 Lankester, E. Ray, on hæmoglobin in Branchiopoda, 165 Larvæ of Lobster, 28; of Norway Lobster, 71; of Stomatopoda, 80; of Brine Shrimp, 81; of Land Crabs, 191; of Robber Crab, 199; fossil, of Stomatopoda, 266 Larval stages, 66; significance of, 85 _Latreillia_, 128 Leach, W. E., on the Gribble, 254