384 



INDEX. 



FJagellifera, 11 

 Floscularia, 20i 

 Flosculariaus, 204 

 Flustra, 242 

 Flusti-iiia, 242 

 Fluviatilida;, G7 

 FoUioulina, 42 

 Food vacuole, 2 

 Fdot, 287 

 Foramnifera, 15 

 ForskaliadiE, 102 

 Fulgor, 331 

 Fnngia, 117 

 FusiiiEB, 331 

 Fredricella, 244 

 Fiesh-water limpets, 308 

 Fresh-water mussels, 269 

 Fresh-water sponges, 67 



Gadinidaj, 305 

 Ganglion, xiii 

 Garden-snail, 313 

 "Gapes," 211 

 Gasteropoda, 202 

 Gasivoolijenidae, 283 

 Gastropliysema, 61 

 Gastrotricha, 206 

 Gastrula, x 

 Gattiilina, 21 

 Gelatinous tissue, xii 

 Gemellaria, 241 

 Generalized types, xvii 

 Gemma, 277 

 Geodia, 08 

 Geomalism, 50 

 Gephyrea, 217 

 Gephyrei Chsetiferi, 217 

 Giant clam, 273 

 Giant squid, 377 

 "Gid,"201 

 Gills, xxiv 

 Glandina, 310 

 Glands, xxi 

 Glass-rope sponge, 69 

 Gleba, 108 

 Glenodininm, 38 

 Glohigerina, 19 

 Glohigorina ooze, 19 

 Glooliidium, 270 

 Glycimoris, £81 

 Gnathobdellidae, 233 

 Gnathodon, 279 

 Gold-shell, 200 

 Gonangia, 78 

 Goniastcridse, 159 

 Goniobasis, 342 

 Gonicoidaris, 106 

 Gonotheca, 83 

 Gonotliyrea, 81 

 Gordlid'a;, 212 

 Gordius, 212 

 Gorgonooephalus, 152 

 Gorgonidje, 122 

 Graptolites, 89 

 Gregarina, 2~i 

 Gregarinida, 23 

 Gromia, 14, 15 

 Growth, viii 

 6rypha;a, £60 

 Guard, :'m 

 Guinea-worm, 209 

 Gumminia, 03 

 Gumminina), ("'3 

 Gundlachia, £08 

 Gymnoblastea, 77 

 Gymnocyta, 2(; 

 Gymnodinium, ?8 

 Gymnotemata, 240 

 Gymnosomata, 359 



Hjemodipsa, 234 

 Hsemopsis, 234 

 Hair-worm, 212 

 Halcyonium, 122 

 Halcyonoida, 115, 121 

 Haloyonidaj, 122 

 Haliohondria, 60 

 Haliomma, 10 

 Hallotida;, 320 

 Haliotis, 320 

 Halisarca, 03 

 Halisarcoidea, 63 

 Halisphysenia, 61 

 Halistemma, 102 

 Halophragmium, 18 

 Halteria, 43 

 Haminea, 302 

 Hammer-shell, 265 ■ 

 Hard-head sponge, 64 

 Hard-shell clam, 270 

 Harpa, 329 

 Harp shells, 329 

 Hastigerina, 20 

 Hauptzouid, 124 

 Hay-fever, 30 

 Hearing, xxx 

 Heart, xxiii 

 Hectocotylus, 365 

 Heliaster, 160 

 Heliastraea, 119 

 Helioidie, 310 

 Heliciua, 324 

 HelioinEB, 313 

 Helicinidai, 324 

 Heliozoa, 4, 13 

 Helix, ;;i3 

 Helmet-shells, 351 

 Hemiaster, 175 

 Hemicardium, 274 

 Hemicystites, 139 

 Hemiophrya, 30, 48 

 Hemphillia, 319 

 Hon-clam, 278 

 Hermoea, 299 

 Hermione, 280 

 Herpetomonas, 33 

 Heterocentrotus, 169 

 Heteronereis, 228 

 Heterotenthis, 375 

 Heteropoda, 353 

 Heterotricha, 41 

 HexactinelliniE, 69 

 Hexametra, 34 

 Hipponoe, 170 

 Hipponyx, 340 

 Hippopodise, 105, 106 

 Hippopodius, lOJ 

 Hippopus, 273 

 Hippurites, 272 

 Hippuritidae, 272 

 Hii-udinei, 232 

 Hirudo, 233 

 Histioteuthis, 375 

 History of Zoology, liiv 

 Histriobdella, 235 

 Holopus, 140 

 Holostomata, H38 

 Holotluu-ia, 182 

 Holothnroidea, 176 

 Holotricha, 39 

 Holtenia, 70 

 Homolampas, 174 

 Homology, xvi 

 Horse-sponge, 04 

 Hyaloidaj, 357 

 Hyalina. 357 

 Hyalonema, 69 

 Hybrids, 1 

 Hydatina, 205 

 Hydra, 73, 77 



Hydractinia, 82, 89 

 Hydranth, 78 

 Hydrooorallinse, 88 

 Hydroid, 73 

 Hydroidea, 73 

 Hydrorhiza, 78 

 Hydrotlieca, 83 

 Hydrozoa, 73 

 Hymenaster, 157 

 Hyocriuus, 146 

 Hypoblast, x 

 Hyponome, 140 

 Hypotricha, 40 



lanthinidiB, 325 

 Icthydium, 206 

 Icthyobdella, 235 

 Idmonea, 241 ' 

 Idol-shells, 345 

 Ilyanassa, 333 

 Impregnation, xlvi 

 Inarticulata, 240 

 Individual, 57 

 Inermes, 217 

 Infundibulum, 346 

 Infusoria, 20 

 Ink-bag, 303 

 Inorganic bodies, ii 

 Intseniolata, 87 

 Integropalliata, 257 

 Intestine, xx 

 Invagination, x 

 lo, 342 

 Irpa, 179 

 Isidse, 123 

 Isis, 123 

 Isocardia, 376 

 Isogeny, xvii 

 Isopleura, 292 

 Ivory shells, 333 



Jelly-fishes, 89 

 Jointed worms, 218 



Kellia, 279 



Key-hole limpets, 320 

 Kerato-silicoidea, 05 

 Keratode, 63 

 Keratoidea, 64 

 KjiMvenmiiddiugs, 257 

 Kolga, 179 

 Koonsia, 303 

 Korethraster, 157 

 Kraken, 309 



Labial palpi, 254 

 Lachrymaria, 40 

 Lacuna, 339 

 LacustridsE, 67 

 LsBvicardium, 273 

 Laganieca, 35 

 Laganum, 171 

 Lagena, 15 

 Lagenophrys, 45 

 Lamarckianism, Ivi 

 Lamellaria, 347 

 Lamellibranchiata, 252 

 Lana di mare, 103 

 Land leeches, 234 

 Land snails, 311 

 Laival forms, xlvii 

 Lasso cells, 74 

 Leda, 209 

 Leeches, 232 



land, 234 

 Lepardia, 242 

 Lepeta, 321 

 Lopidonotus, 230 

 Lepooyta, 26 

 Leptodera, 207 



