INDEX. 



935 



Solifugae, 529. 



Somatopleure, xxx. 



Somites, 142 ; table of post- 

 oral, in Arthropoda, 173-6 ; 

 Hirudo, 212; 490; 579. 



Sorophora, 908, 912. 



Sorus, 908. 



Spadella, 674. 



Spadix of Nautilus, 457 ; of 

 Medusoid, etc., 762. 



Spermatheca, 160, 206, 297. 



Spermatophore of Helix, 

 117; Chaetopoda, 605; 

 Hirudinea, 631 ; Brachio- 

 poda, 700. 



Spermatozoon, xxiv. 



Sphaeridia, 559. 



Sphaerularia, 682. 



Sphen-ethmoid, 79. 



Sphen-otic, 91. 



Sphinx imago, 156-162; ex- 

 ternal characters, 156-158 ; 

 spiracles, 159 ; mouth- 

 parts, 159; internal ana- 

 tomy, 1 60 ; metamorpho- 

 sis, 161. 



Sphinx larva, 147-152; ex- 

 ternal characters, 147-148; 

 ecdysis, 149; internal ana- 

 tomy, 149, 150; types of 

 Insectan larvae, 150, 151. 



Sphinx pupa, 152-156; 

 types of pupae, 152; ex- 

 ternal characters, 152- 

 154 ; wings of Insecta, 155. 



Spiculispongiae, 810. 



Spinal nerves, 345 ; of Pis- 

 ces, 419 ; of Cyclostomi, 



434- . 



Spines of Asterias, 190. 



Spiracle of Pisces, 422 ; ru- 

 diment of in Cyclostomi, 

 435 ; v. Stigmata. 



Spiracular cartilage, 413. 



Spiral valve of Elasmo- 

 branchii, 421. 



Spirilla, 457, 465. 



Splanchnopleure, xxx. 



Spleen, Rana, 77 ; Mamma- 

 lia, 3, 25 ; Aves, 56; Perca, 

 84 ; Vertebrata, 353. 



Splenial, v. Lower jaw. 



Spondylus, eyes of, 451, 487. 



Sponge, v. Spongilla. 



Spongilla, external charac- 

 ters, 249; microscopic ana- 

 tomy, 250-251, 253 ; chlo- 

 rophyll, 243, 251. 



Spongin, 252, 797. 



Spongoblasts, 252, 797. 

 Spongoclasts, 798 n. 



Spore-formation, Protozoa, 



821. 

 Sporocyst, Trematoda, 651 ; 



Mycetozoa, 910, 911 ; Pro- 



teomyxa, 915. 

 Sporogony(Trachymedusae), 



749> 753- 

 Sporont, 858. 

 Sporosac, : 762. 

 Sporozoa, 857. 

 Spumellaria, 882. 

 Spur, Aves, 373. 

 Squalidae, 430. 

 Stapes, 339, 347. 

 Staphylocystis, 232. 

 Starfish, v. Asterias. 

 Statoblasts, Polyzoa, 709 ; 



Spongilla, xvi, 250, 804. 

 Stauria, 744. 

 Stauromedusae, 788. 

 Steganophthalmata, v. Acra- 



speda. 



Stegocephali, 409. 

 Stegosauria, 392. 

 Stelechopus, 609. 

 Stentorin, 833. 

 Stereonemata, 910. 

 Sternaspis, 625. 

 Sternebrae, 361. 

 Sternum, Aves, 60, 63 ; 



Rana, 82 ; Vertebrata, 



341 ; Arthropoda, 491. 

 Sticholonche, 872. 

 Stigmata, 103, 144, 150, 153, 



159, 443, 55> 517, 521, 

 527. 



Stipes, 140. 



Stolon of Salpa, and Dolio- 

 lum, 446. 



Stoma of Tealia, 240. 



Stomatogastric nervous sys- 

 tem, Insecta, 501 ; Crus- 

 tacea, 533 ; Chaetopoda, 

 598 ; Periplaneta, 142 ; 

 Astacus, 187, 189, 282. 



Stomatopoda, 540. 



Stomodaeum, xxviii. 



Stone canal, Asterias, 191, 

 193 ; v. Water- vascular 

 system. 



Strepsiptera, 511. 



Streptoneura, 482, 



Strobila, Acraspeda, 782 ; of 

 Cestoda, 656 ; Taenia, 225, 



323. 



Stylifer, 482. 

 Stylohyal, 93. 

 Stylommatophora, 483. 

 Subdermal spaces, 795. 

 Sub-intestinal vein, 352. 

 Sub-mentum, 141. 

 Sub-neural gland, 105, 442. 

 Subnotochordal rod, 334. 



Sub-orbital bones, 96. 

 Sub-operculum, 93. 

 Sub-umbrella, Medusa, 248, 



745- 



Suckers, Taenia, 224, 225. 

 Supra-orbital bones, 96. 

 Supra-pedal gland, no, 281, 



474- 



Supra-renal capsules, Rana, 

 78 ; Aves, 56 ; Vertebrata, 



354- 



Supra-scapula, v. Shoulder- 

 girdle. 



Supra-temporal bone, 95. 



Sur-angular, v. Lower jaw. 



Suspensory ligament, 59. 



Suture of shell, 107. 



Swammerdam, glands of, 76. 



Swimmerets, 164. 



Syconidae, 809. 



Sylleibidae, 809. 



Syllis, 607. 



Symbiosis, 242 ; v. Protozoa, 

 819, 833, 842, 843, 901 n. 



Sympathetic system, Verte- 

 brata, 345 ; respiratory, 

 Sphinx larva, 149. 



Symphysis, v. Lower jaw. 



Symplectic, 93, 



Synaptychus, 456 n. 



Syngnathus acus, testis of, 

 428. 



Synocil, 806. 



Syrinx, 55, 350, 378. 



Syzygy of Crinoidea, 572. 



T. 



Tactile organs, Oligochaeta, 

 211, cf. 598; Vertebrata, 



345- 



Taenia, external characters, 

 224 ; species occurring in 

 dog, 225 ; histological 

 structure, 225-227 ; de- 

 velopment of ovum, 227 ; 

 life-history, 229 - 233 ; 

 figures and description, 

 322-326 ; cystic forms, 

 664 n. 



Taeniadae, 665. 



Tapetum lucidum, 363. 



Tapeworm, v. Taenia, Cysti- 

 cercus. 



Tardigrada, 529. 



Tarsus, Aves, 62, 66 ; Rana, 

 8 1, 82; Vertebrata, 342. 



Tealia, 239-245 ; macrosco- 

 pic anatomy, 239, 240 ; 

 histological structure, 241, 

 242 ; yellow cells and sym- 

 biosis, 242-245. 



Tebennophorus, dart-sac, 1 1 8. 



