720 



INDEX 



Metatheria, 642. 



Metathorax, 314. 



Metazoa, 24, 25, 73-91. 



Metrldium, 134, 135, 136, 141. 



Mice, 658, 660, 698. 



Micracidium, 159. 



Microcentrum, 344. 



Microdrili, 236. 



Micromere, 507, 508. 



Micronodon, 685. 



Micropodida:, 591, 613. 



Micropterus, 467. 



Miirosauria, 525, 526. 



Microstoma, 156. 



Micrura, 177. 



Midas, 663. 



Midges, 357. 



Migration, of birds, 622 ; of mammals, 683 

 Millepora, 129. 

 Millipedes, 309-310. 

 Mimida, 591 ; Mimus, 615. 

 Mink, 655. 

 Minnows, 443, 456. 

 Miocene period, 697. 

 Mites, 381. 

 Mitosis, 14, 15, 16. 

 Mnioliltida, 593. 

 Moa, 589, 597. 

 Modiola, 262. 

 Molar, 636, 679. 

 Moles, 642, 649, 650. 

 Molgula, 393. 

 Molluscoidea, 183. 

 Molossidce, 651. 

 Molting, 288, 324, 578. 

 Mollusca, 24, 25, 242-273; classification, 

 243, 272; metabolism, 270; mor- 

 phology, 269; reproduction, 271. 

 Monaxonlda, 105. 

 Monitors, 537. 



Monkeys, 644, 662, 663, 664, 696. 

 Monocyslis, 48, 49, 50. 

 Monodelphia, 632, 642. 

 Monodon, 675. 

 Moncecious, 80. 

 Monogamous, 653. 

 Monogenea, 161. 



Mono ps, 156. 

 Monoscelis, 156. 

 Monoslga, 47. 

 Monostomitm, 162. 



Monolremata, 642, 645-676, 694, 695, 696 



Moose, 644, 669. 



Mordacia, 420. 



Morphology, 26. 



Mosquitoes, 50, 356, 357, 371. 



Motacillidce, 591. 



Moths, 328, 337, 338, 352-356. 



Motmot, 610. 



Mouse, 643. 



Mouth, 53 (see digestive system). 



Mouth parts of insects, 313, 331. 



Mucosa, 481. 



Mud-puppy, 477, 510, 513. 



Mugiliformes, 444. 



Mullet, 444. 



Multitubcrculata, 685. 



Mungoose, 653. 



Murida, 658, 660. 



Murre, 609. 



Mus, 643, 660. 



Musca, 358; Muscidce, 358. 



Muscular system, 78; of Ascaris, 172 

 crayfish, 287; frog, 497, 498-501 

 lamprey, 416, 417; liver fluke, 157 

 Metridium, 135, 136; perch, 437, 

 pigeon, 582; Planaria, 153; starfish, 

 192 ; vertebrates, 405. 

 Muscular tissue, 74, 75. 

 Muskallunge, 462. 

 Musk-ox, 669, 670, 671. 

 Muskrat, 660. 

 Mussel, 243. 

 Mustang, 701. 

 Mustelidce, 652, 655, 688. 

 Mustelis, 431. 

 Mutabilia, 511, 514-517. 

 Mya, 262. 

 Myodes, 660. 

 My otis, 643, 651. 

 Vlyotome, 394, 416, 417. 

 Myriapoda, 275, 308-311 

 Myrmecobiida, 649. 

 Myrmecocystus, 369. 

 Myrmecophaga, 643, 661 ; Myrmecopha- 



gida, 66 1. 

 Mysidacea, 294. 

 \fysis, 294, 296, 304. 

 \Iystacoceli, 645, 675-676. 

 \Iytilus, 262. 

 Myxine, 414, 420; Myxinida, 420; 



Myxinoidea, 420. 

 \lyxosporidia, 52. 





