324 



INDEX 



Linea alba, 192 



Lingua or hypopharynx (tongue), 82 



Lips, 266 



Liver, 104, 116, 118, 136, 144, 148, 158, 194, 242, 

 268, 272 



Liver-fluke {Fasciola, syn. Distoma), 40-44 ; 

 external features, 40 ; alimentary, excretory 

 and reproductive systems, 40, 42 ; nervous 

 system, 42 ; transverse section, 44 ; 316 



" Liver-rot," cause of, 40 



Lobi inf eriores (inferior lobes), 178 



Lobopod, 2 



Lobosa, 316 



Lumbar region of vertebral column, 298, 302 



Lumbricus, 54-62, 316. See Earth-worm 



Lungs, 194, 244, 268 



Lymph space, 148, 190 



M 



Macbonttcleus, 8 



Malacostraoa, 316 



Malleus, 312 



Malpighian tubules, 82 (cockroach) 



Mammae or teats, 266 



Mammals (Mammalia), 316 



Mandible, 78, 80, 102, 104, 292. See also Lower 



jaw 

 Mandibular arch, 176 

 Mantle, 114, 116, 130, 134 

 Manubrium, 240, 304 

 Manus or hand, 188, 266, 308 

 Mastoid portion of periotic bone, 296 

 Maxilla, first, 80, 100 ; second, 80, 82, 100 

 Maxilla bone, 222, 224, 226, 262, 296 

 Maxillary palp, 80 

 Maxillipeds, 98 



Maxillo-palatine processes, 262 

 Meckel's cartilage, 226 

 Mediastinum, 268 

 Medulla, 8, 10 



Medulla oblongata, 178, 228, 264 

 Meganuoleus, 8 



Membrane bones. See Investment bones 

 M'ento-meckelian, 226 

 Mentum of cockroach, 82 

 " Mermaid's purse." See Egg capsule 

 Meropodite, 98 



" Merry-thought " or furcula, 238, 250 

 Mesencephalon. See Mid-brain 

 Mesenchyme, 34 

 Mesenterial filaments, 36 

 Mesenteric filament, 34 

 Mesenteries, 34, 36, 56, 316 

 Mesenteron. See Mid-gut 

 Mesentery, 158, 270, 272 

 Mesethmoid, 260, 294 

 Meso-cuneiform, 310 

 Mesoderm, 34 

 Mesogloea (Supporting lamella), 14, 16, 28, 30, 32, 



34 

 Mesonephros (Wolffian body), 162, 288 

 Mesonephric (Wolffian) duct, 162 

 Mesonotum, 74 

 Meso-pterygium, 164 

 Mesostemum, 194 

 Mesothorax, 74 

 Metacarpals, 254, 306, 308 

 Metacromion, 304 

 Metanephric duct, 162 



Metanephros, 162, 250, 286 



Metanotum, 74 



Metapleural folds, 142, 148, 150 { Amphioxus) 



Metapophysis, 302 



Meta-pterygium, 164 

 JHetasternum, 194 



Metatarsals, 220, 256, 310, 312 



Metatarsus, 220 



Metathorax, 74 



Metazoa, 16, 316 



Metencephalon. See Hind- brain 



Micronucleus, 8 



Mid-brain or mesencephalon, 178 



Mid-gut or mesenteron, 82, 104 



Molar teeth, 296 



MoUusca, 316 



Monocystis, 10-12 ; form and structure of Mono- 

 cysHs magna, 10 ; structure and life-history 

 stages of Monocystis agilis, 10, 12 ; 316 



Motor nerves, 148 



Mouth : Paramecium, 8 ; Hydra, 28 ; sea- 

 anemone, 34 ; liver-fluke, 40 ; earth-worm, 

 54, 56 ; leech, 64, 66 ; cockroach, 78, 82 

 crayfish, 104; snail, 114, 118; mussel, 138 

 Amphioxus, 144; dogfish, 152; skate, 154 

 frog, 190 ; pigeon, 236 ; rabbit, 266 



Mouth-parts of cockroach, 80 



MuUerian duct, 162, 164, 290 



Muscle, 6, 154 ; adductor, 102, 128, 130, 134, 198 

 (magnus) ; biceps, 200, 304 ; cells, 28, 30, 34 ; 

 circular, 44, 50, 60, 72 ; columellar, 116 ; 

 coraco-brachialis, 238 ; deltoid, 192 ; dorso- 

 ventral, 72 ; extensor, 102 ; extensor cruris, 

 200 ; fiexor, 102 ; gastrocnemius, 198, 200 ; 

 insertions, 128 ( Anodonta), 130 (Mytilus) ; 

 intrinsic, 124 ; lateral, 142, 146, 148 ; longi- 

 tudinal, 34, 36, 38, 44, 50, 60, 62, 72 ; man- 

 dibular, 184; mylo-hyoid, 192, 228; oblique, 

 72, 182 ; obliquus extemus, 192; of eye, 178, 

 182 (dogfish), 186 (skate) ; of leg of Rana and 

 Xehopus, 198, 200 ; panniculus carnosus, 268 ; 

 parietal, 38 ; pectoralis, 190 ; pectoralis major, 

 238 ; pectoralis minor or subclavian, 238 ; 

 peroneus, 200; protractor, 130, 134; radiat- 

 ing, 56, 66; rectus, 182, 192 (abdominis), 198 

 (internus major), 200 (antious femoi'is) ; 

 retractor, 36, 38, 120, 130, 134 ; sartorius, 198 ; 

 semi-membranosus, 200, 228, 230 ;' sphincter, 

 38 ; tibialis antious and posticus, 200 ; triceps 

 extensor cruris, 200 ; vastus internus, 198 ; 

 extemus, 200 ; ventral, 146, 148 



Muscular fibres, 34 ; processes of Hydra, 28, 30 



Muscular system : Hydra, 28 ; sea-anemone, 38 ; 

 earth-worm, 60, 62 ; leech, 70, 72 ; crayfish, 

 102; mussel, 130; Ampiiioxus, 146; frog, 

 190, 192, 198 ; Xenopus, 192 ; pigeon, 238 



Mussel, Fresh-water (Anodonta), 126-140; ex- 

 ternal features, 126 ; shell, 126, 128 : internal 

 structure, 128, 134, 136 ; alimentary system, 

 138 ; nervous system, 140; 316 



Mussel, Marine {Mytilus), 126-140 ; external 

 features, 126 ; shell, 126, 128, 130 ; internal 

 structure, 130, 138 ; alimentary system, 138 ; 

 nervous system, 140; 316 



Myocommas, 142, 148 



Myo -epithelial cell, 28, 30 



Myomeres, 146. See Myotomes 



Myoneme threads, 6 



Myophan striations, 6 



Myotomes or myomeres, 142, 146, 148, 154 



Mytilus, 126-140, 316. See Marine Mussel 



Myxospongida, 24, 316 



