472 



.SUBJECT INDEX. 



Mandibles, 40-43, 45, 51, 58, 60 



Mantis, 390 



Manubrium of Medusce, 304-306 



Mastax, 35, 39 



Material agents in reproduction, of 



Insecta, 433-436 

 MaxillK, 41-45 

 Maxillary apparatus, rudimentary, 



67 

 Maxillipeds, 57 

 Mayflies, 41 

 Medusce, 185, 245, 297-310, 349, 350, 



378, 379, 402, 411. 

 Meleagrina margaritifera, 277 

 Melitcea, 433 



artemis, 262 

 Melohntha, 325 

 Mermis, 39, 428 

 Merostomata, 50 

 Mesenteries, 33 

 Metastoma, 50, 58, 60 

 Metazoa, 9, 30, 32, 221, 245 

 Micrococci, 27 

 Microspectroscope, the, 153, 155, 157, 



169, 170-175, 215, 218 

 MiUepora ramosa, 253 

 Millipedes, 41 

 Milnesium, 439 

 Mimicry, 82 

 Moeandrina, 409 

 Molar motion, 2 

 MoUusca, 5, 9, 67, 105, 124, 125, 141, 



167, 201, 233, 236, 244, 276, 278, 



282, 339, 34r, 342, 365, 367, 397, 



402, 448 

 MoUusca, glycogenic function in, 115 



salivary secretions in, 109 

 Monads, 26, 29, 347, 348, 376, 406 

 Monas vulgaris, 27 

 Monera, 404 

 Monostomum, 420 

 Monticularia, 409 

 Montipora foliosa, 253 

 Morphological units, 2 

 Morphology, i 

 Morulse, 37, 408, 410, 411, 417, 429, 



448 

 Mucous glands, 245, 284 

 Murchisonia, 450 



Murexide, 247, 248, 254, 259, 270, 274 

 Musca, 326, 390 

 Muscular fibres, 375, 387-389, 393 



pharynx, 35, 40 

 Musical organs of insects, 433-436 

 Mya, 67-69, 104, 105, 283, 286, 287, 



340 

 Mygale, 48 

 Myohsematin, 219, 222, 231, 238, 284 



Myrianida, 426 



Myriapoda, 40, 41, 46, 123, 127, 180, 

 192, 228, 260, 324, 355, 363, 389, 



430 

 Myrmecoles, 264 

 Myrmeleonidce, 359 

 Mytilus, 67, 104, 105, 141, 234, 237, 



238, 398 



', 37, 422 



Nais, 79, 424 



Naked-eyed Medusce, 298-308 



Natica, 450 



Natural selection, 250, 288, 391 



Nautilus, 74, 202, 367, 370, 451 



Nectocalyx of Medusce, 298, 300, 302, 



304-306, 379 

 NematosBolices, 38, 39, 227, 323, 354, 



389, 426 

 Nematoidea, 38, 39, 86, 127, 227, 259, 



323. 3S4> 389. 426, 428 

 Nematorhyncha, 38, 39 

 Nematus ventricosus, 437 

 Nemertes, 418, 419 

 Nephelis, 131, 146 

 Nephridia, 204, 243, 256, 257, 260, 



283-286 

 Nephrops, 232 

 Nepthys, 323 

 Nereis, 38, 91, 153, 226 

 Dumerillii, 152 

 regia, 322 

 Nerve-cells, 293, 299, 303, 313, 



322 

 Nerve-centres, 295, 310, 319 

 Nerve-fibres, 293, 294, 299, 322, 



353 

 Nerve-plexuses, 299, 313, 317, 319, 



327. 351 

 Nerve-poisons, 309 

 Nerve-rings, 311, 316, 318, 321, 323, 



342 

 Nerve-tracts, 296, 302 

 Nerves, inhibitory, 294 

 motor, 294 

 of Somarus, composition of, 336- 



338 

 secretory, 294 

 sensory, 294 



transmission of motor excita- 

 tion in, 331-336 

 vascular, 294 

 Nervous systems, 292-344 

 Neuro-muscular elements, 297, 299, 



302, 304, 308 

 Neuroptera, 45, 327, 357, 359, 394, 



433, 438 

 Nirmidce, 359 



