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. 



Sphacrularia, 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; wingsof Insecta, 155. 



Spiculispongiae, 810. 



Spinal nerves, 345 ; of Pis- 

 ces, 419 ; of Cyclostomi, 



434- 



Spines &i Asterias, 190. 



Spiracle of Pisces, 422 ; ru- 

 diment of in Cyclostomi, 

 435 ; v. Stigmata. 



Spiracular cartilage, 413. 



Spiral valve of Elasmo- 

 branchii, 421. 



Spirula, 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. 



Spongiophaga, 798 n. 



Spongiophagus, 769 n. 



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, 505> 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, 

 81, 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. 



