552 COMPARATIVE ANATOMY AND PHYSIOLOGY. 



Ganoiclei, 90; snout, 336 



Gastropoda, ; divisions, 80 ; diges- 

 tive tract, 135; blood-vessels, 

 191 ; gills, 221 ; lungs, 228 ; re- 

 nal organ, 255 ; foot, 380 ; go- 

 nads, 502 



Gepliyrea, 56; digestion. 118; re- 

 spiration, 230 ; nepbrida, 251 ; 

 gouads, 489 



Glossopbora, 80 ; odontopbore, 135 



Gnatbopoda, 58 



Gnathostomata, 88 ; moutb, 140 



Goose ; gizzard, 164 



Gordius, 51 ; mouth, 114, 179 



Gorgonia ; zoological position, 

 44 ; figure, 44 ; skeleton, 281 



Grautia, 36 ; sense-cells, 431 



Gregarina, 25 ; reproduction, 474 



Gromia, 27 ; figure, 26 ; test, 275 



Gymnosomata, 82 



Gymnotus ; electric ororans, 269 



G^ nmura; teeth, 150; stomach, 165 



Haematobrauchiata, 73 



Haliotis, 81 



Halis :rca, 35 



Hatteria, 96 ; teeth, 146 ; vertebrae, 

 315 ; jaws, 339 



Haustellata, 77 



Hedgehog ; teeth, 151 



Hedriophthalmata, 70 



Helicidae ; teeth, 134 : gonads, 502 



Heliozoa, 27, 29 ; skeleton, 276 



Helix, 81 



Heloderma ; oral glands, 159 



Hemiptera, 77 ; gnatliites, 132 



Hesione ; air sacs, 230 



Hesperomis, 98 



Heteropoda, 82 



Hirudinea, 56 ; sensory organs, 

 433 ; gonads, 489 



Histozoa, 24; nepbridia, 252 



Holopus, 121 



Holothuria, 64; lungs, 229 ; cuvie- 

 rian organs, 268 ; skeleton, 296 ; 

 Lirva, 372; gonads, 492 



Homo, 100 ; erect position, 356 ; 

 brain, 429; scrotum, 507; ovi- 

 ducts, 519 ; teats, 522 



Horse ; teeth, 153 ; stomach, 165 ; 

 foot, 355 



Hyalea, 82 



Hy alone ma ; spicules, 279 



Hydra ; figure, 36, 40 ; digest : on, 

 105 ; chlorophyll, 272 ; sense- 

 cells, 432 ; gonads, 484 



Hydractiuia, 40 



Hydrocorallinse, 40 



Hydromedusee, 40 ; coral, 283 



Hymen -vpten, 77; gnathites, 130; 



vocal or^au, 389 

 Hyomoschus ; foot, 357 

 Hyrax, 99 ; caeca, 172 



Ichthyopsida, 89 



Infusoria, 29 ; digestion, 103 ; re- 

 spiration, 210; lorica, 278; cilia, 

 371 ; reproduction, 476 



Insecta; gnatliites, 128; enterou, 

 133 ; salivary glands, Malpighian 

 vessels, 134 ; heart, 190 ; respi- 

 ration, 216 ; poison glands, 266 ; 

 silk glands, 567 ; appendages, 

 303 ; wings, 378 ; vocal organs, 

 388 ; nervous system, 406 ; sen- 

 sory organs, 436, 449, 439, 461 ; 

 gonads, 497, 500 ; larvae, 531 



Insectivora, 99 ; brain, 426 



Isopleura, 81 



Isopoda, 70 ; parasitic, 180 ; respi- 

 ration, 229 ; gonads, 499 



Lacerta, 96 



Lacertilia, 96 ; oral glands, 159 



Laemodipoda, 72 



Luganum, 63 



Lamellibrauchiata, 79 ; gills, 219 ; 

 glochidia, 221 ; renal organ, 254 ; 

 byssus, 268 ; shell, 306 : foot, 

 380 ; nervous system, 410 ; eyes, 

 457 ; ear, 452 ; gonads, 501 



Lancelot. Sen Cephalochordata 



Leech; mouth, 179; respiration, 

 212 ; nephridia, 252 ; movements, 

 373 



Lemuroidea, 100 



Lepidoptera, 77 ; gnathites, 131 ; 

 stomach, 134 



Lepidosiren, 90 ; teeth, 144 



Lepidosteus, 92 ; teeth, 144 ; air 

 sac, 235 ; ear, 465 



Lepisma, 75 



Leucou, 36 



Ligula, 50 



Limax, 81 ; shell, 305 



Limulus, 70 ; respiration, 225 ; 

 carapace, 299 ; eye, 451 ; sper- 

 matozoa, 499 



Linckia, 63 ; comet form, 494 



Liueus, 85 



Lion ; skeleton, 318 



Lipobranchiata, 74 



Lipocepbala, 79 



Lizard ; heart, 204 ; arterial ar- 

 ches, 205 ; gonads, 512 



Loligo, 83; shell, 309; spermato- 

 phore, 505 



Lophius ; teetb, 142 



