INDEX 



769 



MAGELLAXIA, Shell, 331, 332: Body, 333: 

 . Mantle-lobes, 333 ; Mantle -cavity, 333 : 

 Lophophore, 33J^K 335 : Food- 

 groove, 333if^Kive organs, 334 : 

 o : Muscular system, 335 : 

 : Blood system, 336 : Ex- 

 s, 337 : Nervous system, 

 337 : Reproductive organs, 337 



Maia, 524 



Maiacobdella, 274 



Malacostraca, 523*, 535, 547, 548, 551 



Malleus (of Rotifera), 307 



Malpighiaii tiibes, 577 



Malpighian tubes, of Scorpion, 607 : of 

 Arachnida, 619 : of Tardigrada, 626 



Mandibles See Appendages 



Mantidce, 587 



Mantle, of Anodonta, 632 : Pelecypoda, 

 649 : Amphineura, 664, 665 : Triton, 

 675 : Gastropoda, 689 : Scaphopoda, 

 705 : Sepia, 711 : XautA.*, 729 



Manubrium, of Medusa, f5 : of Obelia, 



119*, 120 m 



Marginal lappets, of AiiWfia, 156*, 157 



Marginal sense-organs, 125 



Marginal tentacles, of Auretia, 156*, 157, 



159 



Marine Annelids, 403 

 Mastax of Rotifera, 307, 308 

 Mastigamceba, 66, 67 

 Mastigophora, 43* : Example, 63 : Clas- 

 sification, 65 : General organisation, 

 65, 66 : Systematic position of the 

 example, 65 

 Maturation, 18*, 19 

 Maxilla See Appendages 

 Maxillary palp See Appendages 

 Maxillipeds See Appendages 

 May-flies, 585 



Medulla of Paramcecium, 79 

 Medullary sheath, of Nerve-fibre, 27, 28 

 Medusa-buds, of Obelia, 119, 120 

 Medusa?, of Obelia, 124, 125 

 Megagametes, of Flayellata, 71 

 Megalwsthetes, 668 

 Megalopa stage, 553 



Megameres, of Ctenophora, 205 : of Poly- 

 clad, 257 



Meganucleus, of Ciliata, 84 : of Para- 

 mwitim, 79 



Megaspores, of Radiolaria, 61 



Megazooid, of Vorticella, 87, 89 



Meleagrina, 647, 661 



Meleayrina margaritifera, 661 



Melicerta, 303, 305, 306 



Melolontha, 594 



Jiembranes, 22 



Membranipora, 320 



Mentum, 573 



Meroblastic, 20* 



Mesemy>ric filaments, of Flabelhtm, 

 Il3 : ol Sea-anemone, 175 





VOL. T 



Mesenteries, of Sea-anemone, 174 

 Mesenteries, development of, in Sea- 

 anemones, 179, 180 : Arrangement in 

 Actinozoa, 185 

 Mesoblast, 21* 

 Mesoderm, 21*, 101, 102 

 Mesoderm bands, of Peri-planet a, 581 

 Mesoglcea, 101*, 102: of 0/>e//, 121 

 Mesonephridia, 439* 

 Mesopodium, 675, 688 

 Mesothorax, 574 

 Mesotrochal, 445 

 Mesozoa, 216 



Messmateism See Commensalism 

 Metagenesis, 39*: of Obelia, 129: Lepto- 

 linse, 141 : Trachylinre, 144 : Aurelia, 

 161 : Liver-Fluke, 230 : Tcenia, 236 : 

 Platyhelminthes, 259, 266 : Nematoda, 

 286 



Metameres, 41*, 403 

 Metamorphosis, of Trachylinse, 144 : Sea- 

 anemone, 180 : Platyhelminthes, 260 : 

 Nemertinea, 273 : Phoronis, 331 : A*- 

 terina, 361 : Antedon, 377 : Echino- 

 dermata, 396: Chastopoda, 445 : Ape*, 

 497 : Crustacea, 552 : Insecta, 600 

 Metamorphosis, retrogressive See De- 

 generation 

 Metanaupliiis, 497 

 Metapodium, 675, 688 

 Metathorax, 574 

 Metazoa, 96 

 Micrsesthetes, 668 

 Microgametes, of Flagellata, v 71 

 Microgromia, 50 

 Microhydra, 137, 155 

 Micromeres, of Ctenophora, 205 

 Micromeres, of Polyclad, 257 

 Micronucleus, of Ciliata, 84 

 Micronucleus, of Paramcecium, 79 

 Micropyle, 113 



Micropyle, of Cephalopoda, 744 

 Microspores, of Radiolaria, 61 

 Microttomum, 263 

 Microzooid of Vorticelta, 87, 89 

 Miescher's corpuscles, 79 

 Miliola, 52 

 MiUepora, 145 

 Mtllepora alrirormv, 145 

 Millipedes, 567, 568 

 Minya*, 189 

 Miocene, 7 

 Mites, 612, 616, 619 

 Mitome, 15 

 Mitosis, 16*, 17 

 Modiola, 649 

 Mollusca, 631, 751 w 

 Molluscoida, 313 

 Molluscoida, mutual relationships of the 



classes, 343 

 Monocystis agilis, 75 

 Monoecious, 37 



.S i) 



