_Lepidotus_, _33_; teeth, 110 Leporidae, _48_ Lepospondyli, _35_ _Lepus_, _48_; see Hare _Leptoptilus_, _41_; see Adjutant _Lialis_, _37_, 289 Limbs, general account, 26; modifications in position of, 28; reptiles, 289 Llama, _45_, 359; cervical vertebrae, 445; skeleton, =496=; teeth, 428 Limicolae, _42_ Lingual apparatus, lampreys, 58; myxinoids, 57 Lion, _48_ _Loemanctus longipes_, shoulder girdle and sternum, =287= Loggerhead turtle, carapace, =216= _Lophiodon_, _46_; teeth, 345, 429 Lophiodontidae, _46_ Lophiomyidae, _47_ _Lophiomys_, _47_; pes, 526; skull, 476 _Lophius_, attachment of teeth, 107 Lower jaw, see Mandible Lumbar vertebrae, 16; crocodile, 242; dog, 378 f.; duck, 311 Lunar, 27; dog, 408 _Macacus_, _49_; cervical vertebrae, 446 _Machaerodus_, _48_; upper canines, 437 _Macrauchenia_, _46_, 358; calcaneum, 360; cervical vertebrae, 445; fibula, 519; tarsus, 523; ulna, 501 Macraucheniidae, _46_, 509 Macropodidae, _43_, _350_; dental formula, 423; pes, 522 _Macropus_, _43_; see Kangaroo Macroscelidae, _49_ _Macroscelides_, _49_; skull, 480 Magnum, 27; see Carpus Malar, 22; see jugal Malleus, dog, 393; man, dog and rabbit, =485= Mammalia, _42_; auditory ossicles, 485; cervical vertebrae, 442; exoskeleton, 416; general characters, 343; manus, 503; Mesozoic --, 348; pectoral girdle, 493; pelvic girdle, 512; pes, 521; ribs, 490; sacral and caudal vertebrae, 451; skull, 455; sternum, 489; thigh and shin, 517; thoraco-lumbar vertebrae, 447 Man, _49_; arm bones, 503; auditory ossicles, 488; caudal vertebrae, 454; cervical vertebrae 446; pelvis, 515; pes, 527; ribs, 493; scapula, 499; skull, 483; sternum, 490; teeth, 441 Manatee, _44_; see _Manatus_ Manatidae, _44_ _Manatus_, _44_; cervical vertebrae, 444; dental formula, 425; humerus, 501; manus, 505; pelvis, 514; skull, 460; sternum, 489; teeth, 345; thoraco-lumbar vertebrae, 448 Mandible, birds, 335; cod, 100; crocodile, 258; dog, 398; duck, 319; frog, 160; Hippopotamus, =467=; Isabelline bear, =438=; newt, 144; salmon, 94; turtle, 230 Manidae, _44_; see _Manis_ _Manis_, _44_; auditory ossicles, 487; manus, 504; scales, 3, 417; skull, 459; _M. macrura_ xiphisternum, 489; see Pangolin Manubrium of malleus 486; dog, 393; -- sterni, dog 404