702 



INDEX 



Gasteropoda, 550 



Gasterostomum, 222; fimbriatum^ 220, 

 224 



Gasterozooids, of Doliolida, 686; 

 684; of Siphonophora, 166, 169 



Gastra) layer, 117 



Gastric cavity, 150; filaments, 174; 

 glands, 240; mill, 344; shield, 578 



Gastrodes, 196 



Gastrophilus, 439; equi, $12, 



Gastrotricha, 243; 197, 237, 244 



Gastrovascular system, 175 



Gastrula, 129; of Echinodermata, 

 631 ; of Polychaeta, 282 



Gastrulation, 145; 129; of Arthro- 

 poda, 316; of Aurelia, 178; of 

 Crustacea, 353 ; of Echinodermata, 

 631; of Insecta, 542; of Nemato- 

 morpha, 257 ; of Nemertea, 235 ; of 

 Obelia, 1 5b ; of Polychaeta, 282 ; 283 



Gecarcinus, 417; 415 



Gemmules, 123 



Generative organs, General mor- 

 phology of, 131, 134, 143; of Am- 

 phineura, 548; of Arachnida*, 524, 

 529, 533> 537; of Archiannelida*, 

 294, 296; of Arthiopoda, 316; of 

 Balanoglossus, 664, 668; of Brachi- 

 opoda, 6i6 ; of Chaetognatha, 619 ; 

 of Chaetopoda, 262, 288 ; of Chilo- 

 poda, 421 ; of Cnidaria*, 156, 174, 

 177, 183; of Crustacea*, 351, 352, 

 359, 362, 367, 373, 376, 379, 385, 

 397, 414, 415 ; of Ctenophora, 196 ; 

 of Diplopoda, 424; of Echino- 

 dermata, 629, 637-8, 639, 647, 

 658 ; of Hirudinea, 300, 301 ; of In- 

 secta, 447, 447 ; of Lamellibranchi- 

 ata*, 582, 584, 585 ; of Nematoda, 

 248; of Nemertea, 235; of Oligo- 

 chaeta*, 286, 287, 289, 291, 293; 

 of Onychophora, 321 ; of Opistho- 

 branchiata, 567, 569; of Platy- 

 helminthes*, 208, 215, 218, 225, 

 227, 230, 231 ; of Polychaeta, 262, 

 275, 278; of Pulmonata, 560, 570; 

 of Rhabditis, 248 ; of Rotifera, 240, 

 241 ; of Scaphopoda, 573 ; of Sepia, 

 598; of Streptoneura*, 552, 565, 

 566; of Tunicata, 674-5, 679 



Generative pore, see Generative 

 organs 



Genital aperture, opening, organs, 

 system, see Generative organss 



Genital atrium, of Helix, 561; of 

 Platyhelminthes, 210; of Stylaria, 

 291 



Genital bursae, 629, 639; canal, 656; 

 coelom, 593; cords, 656; ducts, see 

 Gonoducts; operculum, 522; plate, 

 641 ; pleurae, 664; stolon, 629. See 

 also Axial organ 



Genital rachis, 629; of Crinoidea, 

 629, 656; of Echinoidea, 629, 647 



Geometridae, 491 



Geonemertes, 221 



Geotrupes, 436 



Gephyrea, 301 



Gerardia, 386 



Germarium, 447 ; 240 



Germs (gametes), see Gametes; of 

 Cnidosporidia, 100 



Geryonia, 164 



Giardia, 67 ; intestinalis , 67 



Gid, 228 



"Gill" of. Salpa, 686 



Gill books, 517; 314, 526, 527, 



529 

 Gill chamber of Decapoda, 408 

 Gill clefts, of ascidian tadpole, 675 ; 



of Balanoglossus, 660, 664, 666 ; of 



Cephalodiscus, 660, 668 ; of Chor- 



data, 660; of Thaliacea, 681, 685; 



of Tunicata, 660, 672, 675, 676, 



685 

 Gill filaments, lamellae, plates, 574 

 Gill pouches, slits, see Gill clefts 

 Gills, of Arthropoda, 314; of Aste- 



roidea, 629, 634; of Crustacea*, 



348, 379, 391, 393, 394, 40i, 403, 

 404, 408, 409 ; see also Epipodites ; 

 of Echinodermata, 629; of Echi- 

 noidea*, 629, 643, 645 ; ofLimulus, 

 314, 517, 526, 527, 529; of Mol- 

 lusca, see Ctenidia ; of Poly- 

 chaeta*, 263, 270, 275 ; of Salpida, 

 685 ; Tracheal, see Tracheal gills 



Girdle of Polyplacophora, 549 



Gizzard, of Earthworms, 287 ; of In- 

 secta, see Proventriculus 



Glabella, 323 



Glands, Aciniform, 533; Aggregate, 

 533 ; Ampulliform, 532 ; Antennal, 

 see Antennal glands; Maxillary, 

 see Maxillary glands; Mucous, 

 561; Oesophageal, 287; of ali- 

 mentary canal, see Alimentary 

 canal. Digestive gland. Liver; 



