INDEX 



Labial palp, 228 



Labium, 228 



Labrum, 228 



Laceria, 403 



Lamprey, 396 



Lankesterella, 61 



Larva, 94 (foot-note) 



Larynx, 409 



Lateral line organs, 345 



Leeches, 157 



Leishman- Donovan bodies, 50 



Leishmania, 50 



Lepidoptera, 245 



Lepidosiren, 374, 390, 391, 403 



Lepidosteus, 371 



Leptomedusa, 100 



Leucocytes, 325 



Leucosolenia, ii8-r2i, 119 



Lice, 255 



and disease, 77, 255 

 Light (insects and), 233 

 Ligula, 228 

 Limb-girdles, 320, 405 

 Limb-skeleton, 379, 404 

 Limbs, evolution, 390, 402, 420 

 Limulus, 218, 219, 256 

 Lingua, 228 

 Liver, 302, 394 



abscess, 15 

 Lobopod, 3 (foot-note) 

 Lumbricus, 130-144 

 Lung, 366, 367, 374, 408, 422, 440 

 Lung-book, 223 

 Lung-fish, 372 

 Lymph, 326, 416 

 Lymphatic glands, 444 



Macrogamete, 40 

 Macronucleus, 69 

 Madrepore, 114 

 Madreporite, 287 

 Mai de caderas, 47 

 MaUory's bodies, 80 

 Malpighian body, 310 



tubes, 234 

 Mammals, 436-448 

 Mammary glands, 438 

 Mandible, 225 

 Mandibular arch, 318 

 Mange, 257 

 Mantle, 270 

 Manubrium, 97 

 Marsupials, 436 

 Maturation of gametes, 30, 37, 58, 182- 



186 

 Maxilla, 225 

 Maxillary palp, 227 

 Maxilliped, 225 

 Maxillula, 225 

 "Measly" beef, 176 



Measurement, microscopic, unit of, 15 



(foot-note) 

 Meckel's cartilage, 318 

 Medullary folds, 327, 458 



plate, 327 

 Medusa, 96-99 

 Megalosphere, 23 

 Meganucleus, 69 

 Meiosis, 183 

 Meiotic divisions, i85 

 Melanin, 55 

 Meroblastic, 454 

 Merotomy, 10 

 Merozoites, 58 

 Mesenchyme, 116, r20 

 Mesenterial filament, 108 

 Mesenteron, 231 

 Mesentery, 107 

 Mesoderm, r2g, 452, 460 

 Mesogloea, 88, no 

 Mesonephros, 308 

 Mesosoma, 211 

 Metabolism, 13 

 Metamerism, 143 

 Metamorphosis, 213, 214 

 Metanephros, 308, 441 

 Metasoma, 211 

 Metatheria, 436, 472 

 Metazoa, 84, 137 

 Microgamete, 41 

 Micronucleus, 69 

 Microsphere, 23 

 Microsporidia, 66 

 Midge, 250, 251 

 "Miescher's tubes," 67 

 Miracidium, 164, r67 

 Mites, 257 



Mitosis, 8, 187, 193, 195, 372 

 Monads, 185 

 Monaxon spicules, 120 

 MonocystiSj 52, 53 

 Morphology, 217 (foot-note) 

 Mosquito, 227, 228, 246, 247 

 Mosquitos and disease, 59, 62, 80, 248 

 Mouth appendages of insects, 227 

 Movement, amoeboid, 3 



euglenoid, 35 

 Miillerian duct, 311, 359, 441 

 Musca, 229, 251 

 Muscle, 85, 116, 306 

 Mussels and disease, 281 

 Mycetozoa, 26 

 Myo-epithelial cell, 89, 179 

 Myoneme, 72 

 Myotomes, 305, 453, 460 

 Myrianida, 147 

 Myriapoda, 240 

 Mytilus, 273 

 Myxidium, 66 

 Myxine, 396 

 Myxosporidia, 66 



2 I 



