93 



ternal characters, 196, 197; 

 epidermis, 198 ; setae, 199 ; 

 clitellum, 200 ; digestive 

 system, 201-203 ; circu- 

 latory system, 203 ; ne- 

 phridia, 204 ; reproductive 

 organs, 205-208 ; nervous 

 system, 209, 212 ; plate 

 and description, 3 14-3 1 7. 



Lunar, v. Carpus. 



Lung, Aves, 49, 55, 57 ; 

 Ophidia, 68, 70; Rana, 77; 

 Vertebrata, 350. 



Lymphatic system, Verte- 

 brata, 353 ; Rana, 77 ; 

 Reptilia, 390. 



Lyssakina, 810. 



M. 



Machiltsfig. and description, 

 298, 299-300. 



Macrocyst of Mycetozoa, 909. 



Madreporaria, 738 ; classi- 

 fication, 743. 



Madreporite, 191, 193, 546. 



Magilus, shell, 474. 



Magnum, v. Carpus. 



Magosphaera, 904. 



Malpighian tubes, 143, 150, 

 296, 494 ; Araneidae, xvi. 



Mammalia, 359-371. 



Mammary glands, 360. 



Mammillae, 303, 524. 



Manatee, 367. 



Mandible, Periplaneta, 140 ; 

 Lepidopteron, 148, 152,154, 

 155, I59n; Astacus, 169. 



Manis, placenta, 367. 



Mantle-folds, 448. 



Manubrium (Medusa), 247. 



Manubrium sterni, 7, 342. 



Marginal spherules, 242. 



Marsipobranchii = Cyclos- 

 tomi. 



Marsupial chamber, Flustra, 

 2 37 5 = Ooecium. 



Marsupialia = Metatheria. 



Marsupites, 570. 



Mastax of Rotifera, 633. 



Mastigamoeba, 841. 



Mastigophora, 840 ; classifi- 

 cation, 854. 



Maxilla, Periplaneta, 140 ; 

 Sphinx, 148, 149, 152, 154, 

 I 59). I 59 n ; Astacus, 170. 



Maxilliped, 163, 169. 



Maxillo-palatine, 62. 



Meckel's cartilage or arch, 

 338. 



Medusa, 247, 745 ; nature of, 

 747 ; degeneration of, 761, 

 762, 768. 



INDEX. 



Megalopa, 538. 

 Megaloptera, 510. 

 Melopsittacus, dental pa- 

 pillae, 375. 



Membrane bones, 339. 

 Meniscus of proscolex, 230. 

 Menobranchus, 408. 

 Menognatha, 498, 509, 510. 

 Menopoma, 408. 

 Menorhyncha, 498, 510. 

 Mentomeckelian, 80,339,383. 

 Mentum, 141. 

 Meroistic ovary, xxiii. 

 Meropodite, 163. 

 Merostomata, 529. 

 Mesenterial filament, 240, 



241, 737- 

 Mesenteries of Tealia, 239, 



240. 



Mesenteron, xxviii. 

 Mesoblast, xxviii, xxix, 333. 

 Mesoglaea, xxviii, 712, 714. 

 Mesonephros, 354. 

 Mesopterygoid, 92. 

 Mesosoma, 522. 

 Mesosternite, 303. 

 Mesotherium, 39, 44. 

 Mesothorax, v. Thorax. 

 Mesotrochae, 606. 

 Mesozoa, 813-818. 

 Metabola, 507. 

 Metacoele, xxix. 

 Metacoelome, 223. 

 Metacoelosis, 218. 

 Metagenesis, xxxi. 

 Metagnatha, 498, 510. 

 Metamere, v. Somites. 

 Metamorphosis, 161, 507, 



508; cf. 151 and Sphinx. 

 Metanauplius, 538. 

 Metanephros, 355. 

 Metapleure of Amphioxus, 



439- 



Metapophysis, v. Vertebra. 

 Metapterygium, 95, 98, 417. 

 Metapterygoid, 92. 

 Metasoma, 522. 

 Metastoma, 170. 

 Metatarsus, Aves, 62, 66 ; v. 



Hind-limb. 

 Metatheria, 368. 

 Metathorax, v. Thorax. 

 Metazoa, 333. 

 Microchaeta Rappi, annula- 



tions, 198. 

 Microcometes, 872. 

 Microcyst of Mycetozoa, 908. 

 Microphthalmus, 604 nn. 

 Micropyle, xxv. 

 Miescher's vesicles, 863. 

 Milk, Pigeon's, 55. 

 Miliolidae, 895. 

 Milt of Pisces, 428. 



Mitome, xxi. .-' 



Mitosis, xxii. 



Molars, v. Teeth. 



Molgulidae, 447. 



Mollusca, 448-456 ; v. Helix, 

 Limax, Anodonta. 



Monadina, 854. 



Monadineae, 917. 



Monauleae, 735. 



Monera, 916. 



Monobia, 916. 



Monocystis Lumbrici, xvi, 

 206. 



Monodelphia = Eutheria. 



Monoecious, xxv. 



Monomeniscous eye, 492. 



Monomya, 133, 289, 490. 



Monophyidae, 774. 



Monophyodont, 363. 



Monopneumona, 432. 



Monopylea, v. Nassellaria. 



' Monothalamous ' Foramini- 

 fera, 885. 



Monotremata= Prototheria. 



Monotrochae, 605. 



Mordacia, 437. 



Morgagni, hydatid of, 356. 



Morula, xxv, xxvi, n. 



Moth, v. Sphinx, imago. 



Mother of pearl, 109. 



Moult, Periplaneta, 140 ; 

 Sphinx larva, 148, 149; 

 Astacus, 166-7, 185 



Mouth parts, Periplaneta, 

 140, 141 ; Sphinx larva, 

 148, 149 ; pupa, 152, 154 ; 

 imago, 159; Astacus, 163, 

 169-70 ; Cicindela, 300 ; 

 Apis, 301, xvi ; Scolo- 

 pendra, 302. 



Mouth, Vertebrata, 334. 



Mucous canals, v. Branchial 

 sense organs. 



Muffle, 3, 4. 



Muller's duct, 273, 354-356 ; 

 of Pisces, 427, 428. 



Multifid vesicles, 114, 118. 



Muraenopsis, 408. 



Mus decumanus, dissection 

 of, 1-4 ; nervous system 

 I ; digestive system, i, 3 

 circulatory system, i, 2 

 reproductive system, 3 

 skeleton of, 4-9 ; plate and 

 description, 260-263. 



Mussel, v. Anodonta. 



Myacea, 490. 



Mycetozoa, 908-912. 



Myocommata, 336 ; of Pisces, 

 415 ; of Cyclostomi, 433 ; 

 of Amphioxus, 438. 



Myocyte of Sporozoa, 858. 



Myohaematin, 116, 118. 



