INDEX. 



609 



Lytta, 589. 



Machilis, 654. 

 Macrobiotus, 497. 

 Macroglossa, 584. 

 Macrostomum, 312. 

 Macrura, 477. 

 Macula acustica, 85. 

 Madrepora, 233. 

 Madreporaria, 228, 232. 

 Madrepores, 229. 

 Madreporic plate. 273. 

 Madreporidas, 233. 

 Mseandrina, 232. 

 Masandrinidas, 229. 

 Maggot, 549. 

 Magpiemoth, 583. 

 Maja, 478. 

 Malachius, 589. 

 Malacobdella, 342, 343. 

 Malacodermata, 589. 

 Malacostraca, 447. 

 Mallophaga, 568. 

 Malpighi, 133. 

 Malpighian body, 76. 

 Malpighian tubes, Arth- 



ropoda, 409. 

 Malpighian tubules, 75. 

 Mammalia, Vascular 



system of, 67. 

 Man, First traces of, 178 

 Mandibles of Crustacea, 



412. 



Manna, 569. 

 Mantis, 527, 557. 

 Mantispa, 564. 

 Manubrium, 211. 

 Marginal bodies, 234, 



239, 254. 



Marine Fauna, 162. 

 Marrow, 41. 

 Marsupialida, 258. 

 Marsupialis, 252. 

 Mask, 562. 



Masticatory organs, 56. 

 Maxilla of Crustacea, 



413. 



May Flies, 661. 

 Meal-worm, 589. 

 Meckelia, 343. 

 Medusa aurita, 261. 

 Medusas, 236. 

 Medusa, Relation of to 



Polyp, 236. 

 Medusa type, 211. 

 Medusites circularis,256. 

 Medusoids, 211. 

 Megachile, 598. 

 Megalonyx, 170. 

 Megalotrocha, 401. 

 Megatherium, 170, 173. 



Melicerta, 404. 



Melipona, 590. 



Mclitsea, 585. 



Melithsea, 231. 



Melofe, 589 



Melolontha, 590. 



Melophagus, 575. 



Membracis, 571. 



Membranacei, 572. 



Membranous labyrinth, 

 85. 



Menopon, 568. 



Mentum, 524. 



Mermis, 345, 356. 



Mermithidas, 356. 



Meroblastic, 111. 



Meromyaria, 345. 



Merostomata, 479. 



Mesenteric filaments, 

 224. 



Mesoderm, 116. 213. 



Mesostomea, 3i3. 



Mesostomum, 313. 



Mesothorax, 525. 



Mesotrocha, 378. 



Metabolism, 10. 



Metachseta, 378. 



Metagenesis, 123, 130, 

 131. 



Metamere, 27, 305. 



Metamorphosis, 126. 



Metamorphosis retro- 

 gressive, 158. 



Metanauplius, 432. 



Metathorax, 525. 



Metazoa, 54. 



Metcecus, 589. 



Miastor, 578. 



Miastor, Pasdogenesis of. 

 544. 



Micrococcus, 206. 



Microgaster, 595. 



Microlepidoptera, 582. 



Micrommata, 504. 



Microstomea, 312. 



Microstomidae, 309. 



Microstomum, 314. 



Microtasnia, 336i 



Micrura, 343. 



Midgut, 66. 



Migration, 74. 



Miliola, 187. 



Millepora, 241. 



Milleporidae, 233. 



Milnesium, 497. 



Mimicry, 155. 



Miris, 572. 



Mites, 489. 



Mole cricket, 558, 



Molpadia, 299. 



Monadinse, 193. 



Monads, 194. 



Monas, 194, 206. 



Monera, 182. 



Mongrels, Sterility of, 

 143. 



Monocaulus, 240. 



Monocelis,311, 313. 



Monocystidea, 208. 



Monocystis, 208. 



Monogenous reproduc- 

 tion, 97. 



Monogonopora, 315. 



Monophyes, 250. 



Monostomum, 317. 321. 



Monothalamia, 186. 



Morphology, 52. 



Morphology, Evidence 

 of, for descent theory 

 151. 



Mososaurus, 175. 



Mucous connective tis- 

 sue, 37. 



Miillerian duct, 101. 



Mundhorn-fliege, 576. 



Musca, 576. 



Muscardine, 584. 



Muscaria, 575. 



Musciformes, 577. 



Muscle-epithelium, 43. 



Muscular tissue, 43. 



Mushroom coral, 232. 



Mutilla, 596. 



Mycetophila, 578. 



Mygale, 504. 



Mygalidaa, 499, 504. 



Mylodon, 173. 



Myoblast, 43. 



Myriapoda, 514. 



Myrmecia, 504. 



Myrmecophila, 696. 



Myrmedonia, 590. 



Myrmeleon, 564. 



Myrmica, 596. 



Mysis, 474. 



Mysis, Auditory organ 

 of, 414. 



Mystacides, 565. 



Myxospongia, 221. 



Myxospongise, 220. 



Myzostoma, 380. 



Nadina, 313. 

 Naideae, 385. 

 Nail, 34. 

 Nais, 386. 



Natural selection, 145. 

 Natural system, 150. 

 Naucoris, 527, 572. 

 Nauplius, 406, 415. 

 Nausithoe, 260, 261. 

 Nausithoe, Eye of, 255. 

 39 



