3 i6 



INDEX 



Fore- brain, 235 



Fresh-water mussel, see Anodonta 



Grertner's canal, 298 



Galea, 152 



Galeus canis, 203 



Gall-bladder, 219 



Gastric mill, 126 



Gastrolith, 128 



Gastropoda, 69 



Gastrula, 83, 192, 255 



Gastrulation, 38 



Genital ridge, 268 



Giant fibres, 27, 189 



Gill-arches, 266 



Gill-bars, 178 



Gill-plate, 258 



Gill-rays, 215, 216 



Gill-slits, 177, 182, 197, 201, 207, 



220, 248, 264, 282 

 Gills, 57, 59, 60, 91, 1 14, 120, 131, 222 

 Gizzard, 23 



Glochidium larva, 65, 67 

 Glomerulus, 275 

 Glycogen, 307 

 Gnathobase, 96 

 Gnathopoda.) 9 1 



Gonads, 65, 146, 176, 189, 200 

 Gonapophyses, 157 

 Green gland, 132, 146 

 Gyri, 297 



Haemal arches, 2IO 

 Haemocoele, 102 

 Hair, 284 

 Hair follicle, 284 

 Hard palate, 287, 290 

 Hatschek's organ, 177 

 Head-cavities, 196, 218 

 Head-kidney, 48 

 Heart, of earthworm, 27 

 of Anodonta, 63 



of Helix, 74 



of Apus, 101 



of crayfish, 129 

 of cockroach, 160 



of dogfish, 222, 224 



of frog, 270, 272 



of mammals, 294 

 Helix aspersa, 70 

 pomatia, 70 



Hemiazygos vein, 296 

 Hemichorda, 202 

 Hepatic caeca, 158, 177 

 Hepatic portal system, 184, 229 

 HeptanchiiS) 207 

 Hermaphrodite, see Monoecious 

 Hermaphrodite duct, 8 1 

 Heterodont, 287 

 Heteromorpha, 170 

 Heteronomous, 46 

 Hexdnchus, 207 

 Hirudinea^ 45, 49 

 Hind-brain, 235 

 Histology of earthworm, 29 

 Homodont, 287 

 Honiomorpha, 170 

 Homonomous, 46 

 Hyoid arch, 266 

 Hyomandibular cartilage, 214 



- cleft, 266 



Hyperbranchial groove, 178 

 Hypoblast, 38, 145, 165, 166, 247, 



301 



Hypobranchial cartilages, 215 

 Hypodermis, 137 



Ileum, 158 



Imago, 170 



Incisor teeth, 287 



Incus, 291 



Infundibulum, 235, 278 



Inhalant aperture, 56 



Intercalary segment, 168 



Interlamellar junctions, 62 



Intervertebral discs, 290 



Iris, 280 



Ischiopodite, 120 



Intestine, see Alimentary canal 



Intestino-tegumentary vessels, 28 



Jaws, 214, 266, 270 

 Joints, 94 



Labial palp, 57 

 Labium, 152 

 Labrum, 145, 151 

 Lacinia, 152 

 Lagena, 245 



Larva of Amphioxus, 196 

 Laurer-Stieda canal, 3, 6 

 Lens, 279 



