834 



INDEX 



Saliva, 34* 



Salivary glands, 34* 



Salivary receptacle, 624 



Sa/mai-iiia, 4,S(i 



Salpinga'ra, 77 



Saltatoria, 636 



Sand-hopper — See Oreheslia, .568 



Saprophytic, 69*. 72 



Sarcocystidea, 81*, Ss 



Sitrcorystis, 88 



Sarooleinma, 28" 



SarcopJiat/a, 644 



Sarcoptes scahind, 665 



Scir.-<irt, 145 



Scale-insects, 634, 647 



Scallop, 696 



Scaphoda, 756*, 757 



Scaphopoda, 680, 756*, 757 



Schififosommn honnatohimn, 285 



Sch/.yfo-'<o7iiimi japon ir i/m, 285 



Schizogony, 84*, 85, 86 



Schhopathes, 202 



Schizopod-stage, 599 



Schizopoda, 601 



Scirtopoda, 328*, 330 



Sclerite, 562* 



Scleroblast, 110*, 130, 124 



Sclerotic, 771 



Scolex, 246*, 280 



Scolopendra, 615 



Scolopcndrella, 615, 617 



Scorpion — See Bdthus. 



Scorpions, 526, 653 



Scorpionida, 660*, 673, 676, 677 



Scorpion-spiders, 632 



Scrobicidaria piijierft/ri^ 699 



Scuta, 578 



SctUariella, 259 



Scutiytra, 615, 617 



SnUigere/la, 615 



Si-yllariis, 587, 589 



Scyllis ramosa, 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 



SKA-oncuMEER, External features, 401 . 

 Structure of body-wall, 402 : Ambu- 

 lacral system, 402 : Nervous-vascular 

 systems, 402 : Ccelome, 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, 34_0-See Polyzoa 

 Sea-mice, 47;i 

 Sea-mussel, 695 



srv'CHirExternalfeatures 393 394, 



^V^ Xona, 396 : Aristotle s lantern 

 397 : Nervous systein, 398 . Amou 

 lacral system, 399 : Enteric canal, 399, 

 Zo- Ccelome, 399: Blood-vascular 

 system, 400; Reproductive organs, 

 400: Development, 400: Systematic 

 position, 414 , . 



Sea-urchins, 412*-^See Echmoidea 



Secondary axis, 41*, 42 



Secretion, 25* 



Segment, 43* 



Segmental organ— See Neprediuui 



Segmentation of oosperm, 22"' 



Segmentation-cavity— See Blastoccele 



Segmentation-nucleus, 20" 



Seison, 335 



Seisonida, 329 



Se/enaria, 347 



Selena riid.c, 349, 352 



Self-mutilation, 435 



Semostomse, 177*, 182, 227 



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

 linse, 154 : Aurelia, 172 : Cubomedusje, 

 182 : Hormiphora, 216 : Ctenoplana, 

 225 : Platyhelminthes, 268 : Nemer- 

 tinea, 294 : Chsetognatha, 318 : Bra- 

 cMonvs, 326 : Rotifera, 334 : Phoronin, 

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

 Nereis, 447 : Chietopoda, 438 : Sipun- 

 culus, 454 : Hirudo, 514 : Hirudinea, 

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

 tacea, 597 : Perijjatus, 609 : Peri- 

 planeta, 627 : Insects, 644, 645 : 

 Scorpio, G59>: Arachnida, 670: Mussel, 

 691 : Pelecypoda, 707 ; Ampbineura, 

 715 : Triton. 731 : Gastropoda, 746 : 

 Rhodope, 758 : Sepia, 769, 771 : 

 Nautilus, 787 : Cephalopoda, 797— See 

 also Eyes, Auditory organs. Olfactory 

 organs. Gustatory organs, Tactile or- 

 gans, Osphradia 



Sense papillss, 302, 493 



Sepia cidtrata, 759 



Sepia, External features, 759, 760 : 

 Shell, 761, 762: Chromatophores, 762: 

 Mantle-cavity, 762: Internal skeleton, 

 763: Alimentary system, 763: luk-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 



Sepiidm, 790* 



Septal funnel, 173" 



Septal neck, 776* 



Septibranchia, 696*, 697, 698 



