834 



INDEX 



Saliva, 34* 



Salivary glands, 34* 



Salivary receptacle, 624 



Salmaciiia, 486 



Salpingceca, 77 



Saltatoria, 636 



Sand-hopper See Orchestia, 568 



Saprophytic, 69*, 72 



Sarcocystidea, 81*, 88 



Sarcocystis, 88 



Sarcolemma, 28* 



Sarcophaga, 644 



Sarcoptex scalri j i, 665 



Sarsia, 145 



Scale-insects, 634, 647 



Scallop, 696 



Scaphoda, 756*, 757 



Scaphopoda, 680, 756*, 757 



Schistosomum hcematobium, 285 



Schistosomum japonicum, 285 



Schizogony, 84*, 85, 86 



Schizopathes, 202 



Schizopod-stage, 599 



Schizopoda, 601 



Scirtopoda, 328*, 330 



Sclerite, 562* 



Scleroblast, 110*, 120, 124 



Sclerotic, 771 



Scolex, 246*, 280 



Scolopendra, 615 



Scolopcndrella, 615, 617 



SCORPION See BUTHUS. 



Scorpions, 526, 653 



Scorpionida, 660*, 673, 676, 677 



Scorpion-spiders, 632 



Scrobicularia piperata, 699 



Scuta, 578 



Scutariella, 259 



Scutigera, 615, 617 



ScMtigerella, 615 



Scyllarus, 587, 589 



Scyllis ramo.sa, 487 



Scyphistoma See Scyphula 



Scyphozoa, 128: Example, 168: Struc- 

 ture and classification, 176 : System- 

 atic position of example, 177: Ad- 

 ditional remarks on, 184 



Scyphula, 174*, 175, 229 



Sea-anemones, 128, 185, 194, 196, 200 

 See Tealia 



Sea-blubbers, 182 



SEA-CUCUMBER, External features, 401 : 

 Structure of body-wall, 402 : Ambu- 

 lacral system, 402 : Nervous- vascular 

 systems, 402: Coelome, 403: Enteric 

 canal, 403, 404 : Reproductive organs, 

 404 : Development, 404 : Systematic 

 position, 414 



Sea-cucumbers, 412 See Holothuroidea 



Sea-fans, 195 



Sea-firs (Sertularians), 143 

 Sea-hares, 721 



Sea-mats, 340 See Polyzoa 



Sea-mice, 475 



Sea-mussel, 695 



Sea-pens, 196 



SEA-URCHIN, External features, 393, 394, 

 395 : Corona, 396 : Aristotle's lantern, 

 397 : Nervous system, 398 : Ambu- 

 lacral system, 399 : Enteric canal, 399, 

 400 : Coplome, 399 : Blood -vascular 

 system, 400 : Reproductive organs, 

 400 : Development, 400 : Systematic 

 position, 414 



Sea-urchins, 412* See Echinoidea 



Secondary axis, 41*, 42 



Secretion, 25* 



Segment, 43* 



Segmental organ See Nepredium 



Segmentation of oosperm, 22* 



Segmentation-cavity See Blastoccele 



Segmentation-nucleus, 20* 



Setson, 335 



Seisonida. 329 



Selenaria, 347 



Selenariida', 349, 352 



Self-mutilation, 435 



Semostomae, 177*, 182, 227 



Sense-organs, 39* : Obelia, 135 : Trachy- 

 linse, 154: Aurelia, 172: Cubomedusse, 

 182 : Hormiphora, 216 : Ctenoplana, 

 225 : Platyhelminthes, 268 : Nemer- 

 tinea, 294 : Chaetognatha, 318 : Bra- 

 chionu*, 326 : Rotifera, 334 : Phoronix, 

 357 : Starfish, 377 : Sea-urchin, 395 : 

 Nereis, 447 : Chaetopoda, 438 : Sipun- 

 culus, 454 Hirudo, 514 : Hirudinea, 

 520 : Apus, 536 : Atacu, 556 : Crus- 

 tacea, 597: Perijmtus, 609: Peri- 

 planeta, 627 : Insects, 644, 645 : 

 Scorpio, 658: Arachnida, 670: Mussel, 

 691 : Pelecypoda, 707 : Amphineura, 

 715 : Triton. 731 : Gastropoda, 746f 

 Khodope, 758 : Sepia, 769, 771 : 

 Nautilus, 787 : Cephalopoda, 797 See 

 also Eyes, Auditory organs, Olfactory 

 organs, Gustatory organs, Tactile or- 

 gans, Osphradia 



Sense papillae, 302, 493 



Sepia cultrata, 759 



SEPIA, External features, 759, 760 : 

 Shell, 761, 762: Chromatophores, 762: 

 Mantle-cavity, 762 : Internal skeleton, 

 763: Alimentary system, 763: Ink-sac, 

 765 : Vascular system, 765 : Coelome, 

 766 : Ctenidia, 766, 767 : Nervous 

 system, 767 : Sensory organs, 769, 771 : 

 Excretory organs, 772, 773 : Repro- 

 ductive organs, 773, 775 : Systematic 

 position, 790 



SepiidtK, 790* 



Septal funnel, 173* 



Septal neck, 776* 



Septibranchia, 696*, 697, 698 



