642 



INDEX. 



trunks, 149; Ganglia, 150; Vascular 

 system, 168; Excretory organs, 

 176. 



Scolopendra — Salivary glands, 274; Liver, 

 274; Malpighian vessels, 276; Cir- 

 culatory system, 284; Generative or- 

 gans, 299. 



Scomber — Trunk muscles, 494 ; Appen- 

 dices pyloricEe, 560. 



Scorpionea — Metameres, 237; Cheliceraj, 

 244; Integument, 248; Poison glands, 

 250; Nervous system, 256; Eye, 265; 

 Enteric canal, 269; Hind-gut, 270; 

 Salivary glands, 274; Hepatic tubes, 

 275; Malijighian vessels, 276; Cir- 

 culatory system, 284 ; Lungs, 291 ; 

 Generative organs, 297. 



Scutigera — Trachea?, 288. 



Soyllaea — Branchiae, 338 ; Stomach, 362 ; 

 Vessels, 372 ; Excretory organs, 377. 



Scyllium — Brain, 504; Olfactory organs, 

 525 ; Branchial cavity, 543 ; Ovaries, 

 611. 



Scymnus — Arachnoid, 513. 



Scyphostoma — Gastrovascular system, 

 116. 



Segestria — Trachece, 291 ; Ovaries, 297. 



Selachii — Cartilage cells, 26 ; Anterior 

 appendages, 414 ; Dermal denticles, 

 423 ; Vertebral column, 429 ; Trans- 

 verse processes, 431 ; Fin-rays, 432 ; 

 Eibs, 439; Crauium, 447; Palato- 

 quadrate, 448 ; Hyoid, 448 ; Mandi- 

 bular apparatus, 453 ; Branchial 

 skeleton, 468 ; Hyoid arch, 469 ; 

 Copute of hyoid, 469 ; Archip- 

 terygium, 473; Anterior appendages, 

 474; Shoulder-girdle, 474; Fin, 

 477 ; Pelvic -gu'dle, 484 ; Ventral iiu, 

 487 ; Dermal muscles, 494 ; Muscles 

 of branchial skeleton, 497 ; Olfac- 

 tory lobes, 504; Thalaraenceijhalou, 

 504 ; Mesencephalon, 505 ; Sinus 

 rhomboidalis, 505 ; Medulla oblon- 

 gata, 505 ; Optic uorve, 515 ; Ce- 

 phalic nerves, 516 ; Vagus, 517 ; 

 Facial nerve, 517 ; Glossophar- 

 yngeal, 518 ; Gelatinous tubes, 524 ; 

 Olfactory organs, 525; Sclerotic, 529; 

 Ciliary processes, 530 ; Tapetuni, 

 530; Eyelids, 532; Vestibule, 534; 

 Otoliths, 536 ; Spiracle, 537 ; Bran- 

 chial pouches, 542 ; Spiracular cleft, 

 542; Branchial lamellae, 544; Teeth, 

 550; Enteron, 555; Stomach, 557; 

 Spiral valve, 560 ; Hind-gut, 562 ; 

 Air-bladder, 567 ; Abdominal pore, 

 574; Conus arteriosus, 578; Bran- 

 chial arteries, 579 ; Aorta, 585 ; 

 Spleen, 600; Thymus, 600; Archine- 

 phric duct, 602 ; Kidney, 603 ; 

 Nephrostomata, 603 ; Mullerian duct, 

 603; Eggs, 609; Yolk, 6f9; Sperm, 

 609; Ovaries, 610, 611; Germinal 



glands, 611 ; Epigonal Organ, 611 

 Copulatory organs, 611; Cloaca, 

 619. 



Sepia — Mantle, 325 ; Copulatory organs, 

 327 ; Eespiratory organs, 340 ; In- 

 ternal skeleton, 341 ; Buccal ganglia, 

 351; Eye, 355; Auditory plate, 357; 

 Cseca, 363; Liver, 366; Pouches of 

 Needham, 357. 



Sepiada;— Fins, 325; Arms, 326; Os 

 sepise, 334 ; Arteries, 374. 



Sepiola — Liver, 366. 



Sergestes — Auditory vesicles, 261. 



Serpula — Tentacles, 133; Stalk of oper- 

 culum, 134 ; Ganglionic chain, 149. 



Serranus — Hermaphrodite arrangements, 

 611. 



Sertnlaria — Colonies, 93 ; Tests, 164. 



Shad— Beard, 524. 



Shark — Skin, 423 ; Dermal denticles, 423 ; 

 Caudal region, 431. 



Sialida — Salivary glands, 274. 



Siredon — Vertebree, 432 ; Auditory ossi- 

 cles, 538. 



Siphouiata — Siphons, 320. 



Siphonophora — Division of labour' in, 95 ; 

 Colonies, 95 ; Nectocalyces, 96 ; 

 Figure, 96 ; Nutritive persons, 93 ; 

 Protective persons, 97 ; Tentacular 

 persons, 97 ; Generative persons, 97 ; 

 Cilia, lot: Muscular system, 108; 

 Gastric system, 114; Pigmented in- 

 vestment of stomach, 118 ; Separa- 

 tion of sexes, 120 ; Generative 

 products, 121. 



Silurus — Lymph sinuses, 599. 



Simise — Liver, 5G4; Uterus, 616; Hymen 

 616, 



Singing Birds — Syrinx, 572. 



Siphonostoma — • Tentacles, 133, 135 ; 

 Degeneration in, 236 ; Ovaries, 

 293. 



Sipunculus — Cerebral mass, 148; Gan. 

 glion cells, 148 ; Alimentary canal, 

 161, 162 ; Vascular system, 171 ; 

 Excretory organs, 176. 



Siren — Blood-corpnscles, 576. 



Sirenia — Nijiples, 422 ; Caudal vertebra;, 

 436. 



Smynthurus — Trachea?, 288. 



Solaster — Arms, 196; Alimentary canal, 

 213. 



Solen — Ganglia, 345. 



Solenogastres — Ventral surface, 130; 

 Aciculi, 139 ; Nervous system, 151 ; 

 Groove, 318. 



Solidungula — Fore-limb, 483 ; Vena: 

 cavEe, 592. 



Sorex — Jugal, 466; Coracoid, 476. 



Spatangidee — Semitaj, 201 ; Dermal skele- 

 ton, 205 ; Spines, 206 ; Muscular 

 system, 207 ; Blood-vessels, 218 ; 

 Water-vascular ring, 220 ; Stone, 

 canal, 222; Generative organs, 226. 



