INDEX 



833 



C'rustauea, mi: Aithropoila, H78 : 

 Peleoypoda, 712: (Jastropoda, 756: 

 Cephalopoda, 1S04 



Renal organs — See Exuretory system 



Reproduction, Reproductive Sjstem, U, 

 30, 3!l : A mieba, 14, 46 : Foraminifera, 

 .")() : Heliozoa, 59 : Radiclaria, 63 : 

 Mycetozu;^, 67- Ewjleaa, 69: Plagel- 

 lata, 74 : ClioanoHagellata, 7S : Dino- 

 flagellata, 79 : Cystoflagellata, 79 : 

 Mononjstu, 80 : Gregar nida, 83 : 

 Coccidiidea, 84: HiEmosp.'ridea, Sli : 

 ParainceiUim, 90 : Ciliata, 97 : Ten- 

 taculifera, 101: Porifera, 120: Ohe/ia, 

 139 : Leptolinte, 149 : Tiachylina;, 155 : 

 Hydrocorallina, 158 : Siphonophora, 

 162, 164, 166: Anrdia, 171: Tealiu, 

 192 : Actinozoa, 197 : Hormiphord, 

 216: Mesozoa, 231, 234: Planaiid, 

 238, 239: Fasrlola, 242, 243: Tn-iiia, 

 248, 249, 250: Platyhelminthes, 270: 

 A'emertinea, 295 : Asearls, 302, 303 : 

 Nematoda, 307 : Acanthocephala, 314, 

 315: Cha^tognatha, 318: Brachiomit, 

 326 : Rotifera, 334 : Dinophilea, 337 : 

 J!ii,/ii/>i, Mi: Ectoproeta, 352: Endo- 

 procta, 355 : Phoronu, 357 : Magd- 

 lania, 366 : Brachiopoda, 369 : Star- 

 fish, 386: Sea-nrchin, 400: Holothnriati, 

 404 : A ntedon, 409 : Echinodermata, 

 429: Xereix, 449: Lnmhricii.^, 461, 

 462, 481 : Cha-topoda, 481 : Jlyzosto- 

 mida, 490, 495 : Sipunculas, 495 : 

 Gephyrea, 499 : Archi-annelida, 504 : 

 Hirudo, 514: Hirudinea, 520: Apii.s, 

 537 : Astarus, 556: Crustacea, Peri- 

 paliis, 610 : Myriapoda, 618 : Peri- 

 plaiieta, 627, 628 : Insects, 646 : Scor- 

 piov, 658: Arachnida, 671 : Mussel, 

 691 : Pelecypoda, 708 : Amphineura, 

 718, 719: Triton, 732: Gastropoda, 

 748 : Soaphopoda, 757 : Shodope, 758 : 

 Sepia, 773, 775: Nautili,.'!, 787, 788: 

 Cephalopoda, 798 



Requitnin, 700, 701 



Reservoir (Euglena), 68 



Respiration, 13*, 35 



Respiratory organs, 35" : Starfish, 376 : 

 Sea-urchin, 399 : Holothurian, 4(J4 : 

 Chaitopoda, 471: Hirudinea, 502: 

 Apiia, 534 : Adacu.i, 549, 550 : Crus- 

 tacea, 594: Peripaln«, 609: Myria- 

 poda, 617: Periph.iutia, 626, 627: 

 Insects, 641, 642: Scorpion, 657: 

 Arachnida, 668 : Mussel, 685 : Pelecy- 

 poda, 702, 704 : Triton, 725 : Gas- 

 tropoda, 742 : Sepia, 766 : Naiitilux, 

 781 : Cephalopoda, 797 



Respiratory trees, 404, 428 



Retina, 39 



Retinophore, 732* 



Retinula, 536*, 537, 556 



Retractor muscles, 683 



Rhabdites, 263 



Rhabditis-form, 310 



Rhabdocoelida, 252*, 255, 257, 263, 265, 

 2S6, 267, 268, 269, 271, 272, 273, 276, 

 283, 284 



Rhahdofjaster, 319 



Rhabdome, 563*, 537 



Rhabdonema iiiyrovenosiim, 308, 310 



Rhagon-type of Sponge, 118* 



Rhifiophore, 787* 



RhipidodendroH, 71, 73, 74 



Ehipidoglossa, 733*, 756 



Ehizocephali, 505*, 579, 580 



RMzopoda, 45* : Example, 46 : Clas- 

 sification and general organisation, 

 47 



Ehizostomffi, 177*, 182, 183, 227 



Ehizota, 328*, 330, 333 



Rhodope, 758 



Rhombogene, 232 



Rhopalura, 232 



Bhynchobdellida, 516*, 517, 518, 519, 

 520 



Rhynchodemus, 255* 



Rhynchonella, 366, 369 



Rhynchota, 100 



Rhvncoca?le, 289* 



Ring- vessel, 270*, 2S3 



Rock-lobster, 569 



Rock sj'stems, 7 



Rocks, igneous and aqueous, 7* 



Rosette, 407* 



Rosette (Earthworm) 461 



Rosette plate, 418 



Rostellum, 246* 



Rostrum, 542* 



Rotalia, 52 



Rotation, sense of, 39 



Rofifar, 328 



Rotifera, 323* : Distinctive characters 

 and classification, 327* : External 

 characters, 330 : Digestive organs, 

 333 : Excretory system, 333 : Nervous 

 system and Sense-organs, 334 : Re- 

 production and Development, 344 : 

 Ethology, 335 : Affinities, 335 



Rotul«, 398* 



Round-worms, 297 — See Nemathelmin- 

 thes 



Rugosa, 210* 



b« 



s 



labdla, 478 

 Saccammina, 53 

 Saccocirrus, 465, 477 

 Saeculi, 409* 



Sacculina, 565, 579, 580, 599 

 Sagartia, 190, 191 

 Sagitta, 316, 317, 318 

 Sail, of Siphonophora, 163, 166 

 Salinella, 233, 234 



