INDEX 



955 



Madreporic plate of starfish, 291. 



Maeandrina, 205. 



Malacobdella, 235. 



Malacostraca, 339, 350, 356. 



Malacotylea, 223. 



Malapterurus, electric organ of, 591. 



Malar or jugal, 534. 



Malaria parasites, 149. 



Malleus of ear, 550. 



Malpighian body of kidney tubule, 566. 



— tubules of cockroach, 375. 

 Mammal, brain of, 799. 



— heart of, 805. 

 Mammalia, 776. 



— development of, 817. 



— general characters of, i, 778. 



• classification of, i, 832. 



life of, 828. 



survey of, 776. 



— history of, 831. 



Mammals, contrasts between three sub- 

 classes of, 835. 

 — • orders of, 832. 



— placental, orders of, yTj. 

 Mammary glands, 813. 

 Mammillary body, 798. 

 Mammoth, 859. 



Man and apes compared, 890. 

 Manatee (Manatus), 778, 845, 846. 



— and dugong compared, 846. 

 Mandibles of crayfish, 323. 



— of insects, 385. 



Mandibular arch of Vertebrates, 533. 



Mandrill, 885. 



Manidae, 845. 



Manis, 778,^813, 845. 



Mantle of Molluscs, 8, 433, 467. 



Manubrium of sternum, 789. 



— of swimming-bell, 181, 

 Many-plies, 850, 851. 

 Margaritana, 469. 

 Margelis, 204. 

 Margelopsis, 204. 



Marine animals, nutrition of, 159. 



Marmosets, 884. 



Marmot, 867. 



Marsipobranchii (s««Cyclostomata), 6, 574. 



Marsupial bones, 838. 



Marsupials, 3, 813, 837, 



— families of, 839. 

 Marsupium, 813. 

 Marten, 873. 



Masking among Crustacea, 360. 

 Mastodon, 859. 

 Mastoid process, 793. 

 Maturation, 69, 571. 



— and fertilisation, diagram of, 69. 

 Maturity, 21. 



Maxillae of crayfish, 323. 



— of Insects, 385. 



— of Myriopods, 369. 



— of Vertebrates, 534. 

 Maxillipedes of crayfish, 323. 

 May-flies, 384, 387, 407. 

 May-fly, young, 387. 

 Meckel's cartilage, 533. 



Medulla, 542. 

 Medullary canal, 526. 



— groove, 526. 

 Medusae, 184. 



Medusoid, structure 01 a, 182, 183. 

 Medusoids, 12, 13, 180. 

 Megachiroptera, 880. 

 Megadrili, 266. 

 Megalichthys, 636. 

 Megalocercus, 513. 

 Megalopa, 359. 

 Megalosaurus, 720. 

 Megaptera, 864. 



— fore-limb of, 861. 

 Megascolides, 266. 

 Megatheriidc-p, 844. 

 Megatherium, 844. 

 Meibomian gland.. 553, 800. 

 Meiotic division, 57, 70. 

 Melania, 223. 



Meles, 873. 

 Melicerta, 281, 282. 

 Mellivora, 873. 

 Membrane bones, 535, 789. 

 Membranipora, 287. 

 Mendelian inheritance, 90. 



illustrated in wood snail, 91. 



Mendel's Law, 90. 

 Menognatha, 384, 406. 

 Menorhyncha, 384, 407. 

 Mento-meckelian, 654. 

 Mentum of cockroach, 372. 



— of Insects, 385. 

 Mephitis, 873. 

 Merlia, 164. 

 Mermaid's purse, 607, 

 Mermis, 239. 



Meroblastic segmentation, 78. 

 Merogony, 76. 

 Merostomata, 429. 

 Merozoite, 128. 

 Mesencephalon, 541. 

 Mesenchyme cells, 48, 49, 83. 

 Mesenteric filaments 193. 

 Mesenteries of sea-anemone, 192. 

 Mesenteron, 553, 558. 

 Mesentery, 803. 



Mesoblasts, primary, 82. 

 Mesoderm (or mesoblast), 46, 81. 

 Mesoglcea, 81. 



— of Ccelentera, 168. 



— of -Sponges, 154, 157. 

 Mesonemertini, 235. 

 Mesonephros, 566. 

 Mesoplacentalia, 832. 

 Mesopterygium, 595. 

 Mesosoma (of scorpion), 413. 

 Mesostemum, 780. 

 Mesozoa, 166. 



Metabola, 406. 

 Metabolism, 21 37. 

 Metacarpals, 538. 

 Metacoracoid, 793. 

 Metacroniion, 793. 



Metagenesis, or alteration of generations. 

 65. 



