INDEX. 



643 



SphBerodornm — Integument, 138. 



Sphinx — Digestive organs, 270. 



Sphenodon — Bibs, 440 ; Quadrate, 461. 



Spiders — Chelicera?, 214; Spines or seta?, 

 250 ; Spinning glands, 250 ; Nervous 

 system, 256: Cerebral ganglia, 256; 

 Eye, 265 ; Digestive organs, 269. 



Spio — Dermal glands, 141. 



Spirochona — Carapace, 83. 



Spirorbis — Stalk of operculum, 134. 



Spirostomum — Contractile bands, 80 ; 

 Nucleolus, 87. 



Spirula— Shell, 331. 



Spondylus— Shell, 336. 



Spongia? — Gastrula, 92 ; Tentacles, 101 ; 

 Integument, 103 ; Alimentary canal, 

 111 ; Gastric system, 112 ; Lipo- 

 gastria, 113; Sexual organs, 119; 

 Ova, 124. 



Spongilla — Amphidiscs, 106. 



Squat ina — Protopterygium, 478; Arach- 

 noid, 513 ; Enteric canal, 560 ; Heart, 

 578. 



Squilla — Branchiae, 241 ; Nervous system, 

 253. 



Stauridium — Tentacles, 93. 



Stent or — Contractile bands, 30; Shells, 

 83 ; Anal opening, 85. 



Stephanoceros — Wheel organ, 138. 



Sternaspis — Bespiration in, 136 ; Cere- 

 bral mass, 1 18 ; Ganglion cells, 148 ; 

 Vascular system, 171 ; Excretory 

 organs, 176. 



Stomapoda — Liver, 275; Heart, 281. 



Strcpsiptera — Wings, 218; Male organs, 

 304. 



Strombus — Siphon, 323. 



Struthiones — Sacrum, 135; Skull, 160; 

 Toes, 490; Pecten, 530; Marsupium, 

 531 ; Turbinate bones, 547 ; Lym- 

 phatic hearts, 599; Copulatory or- 

 gans, 621. 



Sturiones — Dermal bones, 425; Vertebral 

 column, 430; Bibs, 439; Cartilagi- 

 nous cranium, 450; Mandibular 

 apparatus, 453; Operculum, 455; 

 Goblet-shaped organs, 523 ; Ciliary 

 processes, 530; Branchial lamellae, 

 544 ; Thymus, 600. 

 Suina — Nipples, 422 ; Manus, 483. 

 Suctoria — Pseudopodia, 83. 

 Swans — Trachea, 572. 

 Sycaltis — Skeleton, 105. 

 Sycones — Ectoderm, 103 ; Gastric sys- 

 tem, 113. 

 Syllida? — Parapodia, 134; Visual organs, 



155. 

 Synaptic — Ambulacra, 198; Tentacles, 

 200 ; Calcareous anchor, 206 ; Inte- 

 gument, 206; Internal skeleton, 207; 

 Muscular system, 208 ; Alimentary 

 canal, 214 ; Figure of, 223 ; Polian 

 vesicles, 223 ; Water-vessels, 223 ; 

 Hermaphrodite organs, 226. 



Syncoryne — Tentacles, 93 ; Figure of, 93. 

 Syncorynida3— Cormi, 94. 



Taenia — Segmentation, 129 ; Cystic form, 

 131; Aciculi, 140; Female organs, 

 182. 

 Tamoya — Marginal filaments, 102. 

 Tauais — Auditory vesicles, 261. 

 Tapir — Manus, 482. 

 Tardigracfca — Eye, 266; Generative organs, 



298. 

 Tal pa— Manus, 482. 

 Teleosaurii — Dermal bones, 425. 

 Tegeueria — Trachea?, 291. 

 Teleostei — Bony plates, 424 ; Vertebral 

 column, 430 ; Transverse processes, 

 431 ; Caudal region, 431 ; Fin rays, 

 432 ; Articular processes, 437 ; Bibs, 

 439 ; Cranium (cartilaginous) 450 ; 

 Sphenoids, 452 ; Mandibular appa- 

 ratus, 453 ; Operculum, 455 ; Bran- 

 chial arches, 469 ; Shoulder-girdle, 

 474 ; Thoracic fin, 478 ; Pelvic- 

 girdle, 484 ; Ventral fin, 487 ; Dermal 

 muscles, 492 ; Muscles of branchial 

 skeleton, 497 ; Olfactory lobes, 504 ; 

 Thalarnenccphalon, 504 ; Mesen- 

 cephalon, 505; Sinus rhomboidalis, 

 505 ; Optic nerves, 515 ; Facial 

 nerves, 517; Glossopharyngeal, 518; 

 Vagus, 521 ; Goblet-shaped organs, 

 523 ; Mucous canals, 524 ; Lateral 

 line, 521; Olfactory organs, 525; 

 Sclerotic, 529 ; Optic muscles, 531 ; 

 Eyelids, |532 ; Ductus endolympha- 

 ticus, 534 ; Asteriscus, 536 ; Bran- 

 chial clefts, 543 ; Spiracular cleft, 

 543 ; Branchial lamella?, 544 ; 

 Teeth, 550 ; Euteron, 555 ; Fore- 

 gut, 556 ; Stomach, 557 ; Mid- 

 gut, 559 ; Air-bladder, 567 ; Bulbus 

 arteriosus, 578 ; Branchial arteries, 

 579 ; Aorta, 585 ; Thymus, 600 ; 

 Kidney, 603, 604; Yolk, 609; Ovaries, 

 610 ; Cloaca, 619. 



Tenthredineae — Feet, 246; Cement glands, 

 303. 



Terebella — Tentacles, 133; Branchial do., 

 135 ; Vascular system, 169. 



Terebratula — Circlet of cilia, 307 ; Mus- 

 cular system, 307 ; Nervous system, 

 310 ; Excretory organs, 313. 



Termes — Nervous system, 257. 



Termites — Malpighian vessels, 277. 



Testicardines— Stalk, 308; Shell, 308; 

 Skeleton of arms, 308 ; Alimentary 

 canal, 311 ; Generative organs, 313. 



Tetractinia — Tentacles, 99. 



Tetrarhynchus — Aciculi, 140. 



Thalassema — Excretory organs, 176. 



Thaliada?— Stolo prolifer, 391. 



Thauuiantias — Gastrovascular system, 

 115. 



