INDEX. 



G37 



bones, 487 ; Hallux, 491 ; M. pyra- 

 midalis, 496 ; Cerebral commissures, 

 508; Cerebellum, 510; Stapes, 5:38; 

 Turbinate bones, 517; Sinus maxil- 

 laris, 548 ; Milk teeth, 552 ; Thyroid 

 gland, 551; Stomach, 558; Liver, 

 5G4; Auricles, 583; Venae cava;, 592; 

 Renal organs, G05 ; Oviducts, 615 ; 

 Copulatory organs, 622 ; Erectile 

 bodies, 623 ; Scrotum, 618 ; Vas 

 deferens, 618 ; Testes, 618. 



Medusas — Gelatinous tissue, 25 ; Cartilage 

 colls, 26 ; Cartilaginous skeleton, 38 ; 

 Nervous system, 109. 



Melolontha— Mid-gut, 272; Heart, 283; 

 Generative organs, 304. 



Menobranchus — Vertebrae, 432 ; Enteric 

 canal, 561 ; Trachea, 571. 



Menopoma — Vertebra?, 432 ; Hind-limb, 

 488 ; Trachea, 571. 



Mermis — Excretory organ, 174 ; Genera- 

 tive organs, 185. 



Mesostomum — Nervous system, 145 ; Vis- 

 ual organs, 154. 



Microstomeae — Generative organs, 183. 



Mites — Renal concretions, 278. 



Mnemidae — Axes, 101. 



Moeandrina — Colonies, 100. 



Molgula — Nervous system, 395; Sexual 

 organs, 407. 



Molpadia— "Lungs" 216; Cuvierian or- 

 gans, 216; Polian vesicles, 223. 



Mollusca — Connective tissue, 24 ; Carti- 

 laginous skeleton, 38 ; Dermal bran- 

 chiae, 46 ; General review, 315 ; Clas- 

 sification, 316 ; Bibliography, 317 ; 

 Form of body, 318 ; Velum, 318 ; 

 Appendages, 325 ; Integument, 328 ; 

 Cilia, 328; Shell, 330; Branchiae, 335 ; 

 Nervous system, 343; Sensory organs, 

 351 ; Tentacles, 352 ; Visual organs, 

 353 ; Auditory organs, 358 ; Alimentary 

 canal, 358; Pharynx, 359; Radula, 

 360 ; Liver, 364 ; Pancreatic gland, 

 356; Coelom, 367; Vascular system, 

 368; Blood-fluid, 375; Excretory 

 organs, 46, 375 ; Generative organs, 

 380. 



Monitor — Frontals,459; Pelvis, 485; Eye, 

 529. 



Monodelphia — -Stapes, 538 ; Genital canal, 

 615 ; Scrotum, 618. 



Monotremata — Mammary glands, 421 ; 

 Odontoid process, 437 ; Episternum, 

 444; Coronoid process, 467; Coracoid, 

 476 ; Scapula, 476 ; Marsupial bones, 

 487 ; M. pyramidalis, 496 ; Cerebral 

 commissures, 508 ; Cerebellum, 510 ; 

 Olfactory nerve, 515 ; Eye, 530 ; 

 Lagena, 536 ; Stapes, 538 ; Auditory 

 meatus, 539 ; Horny teeth, 549 ; 

 Thyroid gland, 554 ; Stomach, 558 ; 

 Cloaca, 563,620; Foramen ovale, 581; 

 Venae cavae, 592 ; Oviducts, 615 ; 



Testes, 618 ; Vas deferens, 618 ; Copu- 

 latory organs, 622. 



Mormyrus — Electric organs, 500. 



Moschidae — Manus, 483. 



Muelleria — Cuvierian organs, 216. 



Murex — Siphon, 322 ; Dermal glands, 329 ; 

 Proboscis, 361 ; Anal glands, 362. 



Mus — Uterus, 615. 



Mustelina — Caecum, 562. 



Mustclus — Ovaries, 611. 



Musca — Proboscis, 260; Malpighian ves- 

 sels, 277. 



Muscidae— Heart, 2S3. 



Mya — Ganglia, 316. 



Mygalida — Lungs, 291. 



Myrianida — Appendages, 136 ; Visua 

 organs, 135. 



Myriapoda — Head, 235 ; Form of, 237 ; 

 Gnathites, 244 ; Integument, 248 ; 

 Nervous system, 255; Tactile rods, 

 260; Eyes, 265; Enteric canal, 260; 

 Salivary glands, 274; Malpighian 

 vessels, 276 ; Renal concretions, 278 ; 

 Circulatory system, 283 ; Tracheae, 

 280 ; Germ-glands, 292 ; Generative 

 organs, 299 ; Seminal elements, 

 305. 



Mysis — Branchiae, 241 ; Auditory vesicles, 

 261 ; Heart, 281 ; Female organs, 

 294 ; Seminal elements, 305. 



Mytilidae — Respiratory cavity, 320. 



Mytilus — Byssus gland, 329 ; Branchiae 

 336 ; Genital canal, 381. 



Myrmecophaga— Jugal, 466. 



Myxiuoidea — ■ Auditory capsules, 448 ; 

 Trunk muscles, 491 ; Brain, 50 1 ; 

 Visceral nervous system, 523 ; Laby- 

 rinth, 533 ; Systemic arteries, 585 ; 

 Carotids, 585 ; Kidney, 603 ; Ovaries, 

 610. 



Myzostoma — Intestinal tube, 163. 



Naiades — -Byssus gland, 329 ; Auditory 

 vesicles, 359. 



Narcine — -Electric organs, 500. 



Nassula— Pharynx, 85. 



Natatores — Anal glands, 420 ; Optic bulb, 

 529; Pecten, 531; Stomach, 558; 

 Trachea, 571 ; Lymphatic hearts, 

 599 ; Copulatory organs, 621. 



Nauplius — Appendages, 238 ; Eyes, 264. 



Nautilus — Funnel, 325 ; Copulatory 

 organs, 327 ; Shell, 333 ; Respiratory 

 organs, 340 ; Cephalic cartilage, 342 ; 

 Nervous system, 350, 351 ; Eye, 

 354; Otocyst, 357; Pharynx, 362; 

 Caeca, 363 ; Circulatory centres, 368 ; 

 Branchial veins, 373 ; Exci'etory or- 

 gans, 379 ; Oviduct, 386. 



Nemathelminthes — Muscular system, 142 ; 

 Muscular fibres, 144 ; Nervous sys- 

 tem, 147 ; Alimentary canal, 157 ; 

 Genital products, 190. 



Nematodes — Muscular system, 1-12 ; 



