616 



INDEX. 



Sphaerastrum, 19. 

 Sphaerocapsa, 23. 

 Sphaerodorum, 476. 

 Sphaeroidea, 23. 

 Sphaeroidina, 14. 

 Sphaeromyxa, 67. 

 Sphaeronectes, 149. 

 Sphaerophracta, 23. 

 Sphaerophrya, 52, 53. 

 Sphaerospora, 67. 

 Sphaerosyllis, 476. 

 Sphaerozoum, 23. 

 Sphaerularia, 282, 291. 

 Sphenoides, 149. 

 Sphenumonas, 31. 

 Sphenophyllia, 195. 

 Sphenopus, 189. 

 Sphenotrochus, 149. 

 Sphinctrella, 94. 

 Sphyranura, 236. 

 Sphyrocephalus, 222. 

 Sphyrophysa, 153. 

 Spicata, 181. 

 Spicula nematoda, 278. 

 Spicules of sponges, 81- 



84. 



Spiculum amoris, 379. 

 Spilophora, 291. 

 Spindle muscle, 319. 

 Spinipora, 129. 

 Spintharophora, 97. 

 Spinther, 480. 

 Spio, 475, 483. 

 Spiochaetopterus, 484. 

 Spionifonnia, 483. 

 Spiral metamerism, 494 ; 



zooid, 126. 

 Spirastrella, 97. 

 Spire, 84. 

 Spirialis, 360. 

 Spirillina, 14. 

 Spirobranchns, 491. 

 Spirochona, 50. 

 Spirograplus, 490. 

 Spiroloculina, 13. 

 Spiroptera, 279, 289. 

 Spirorbis, 466, 467, 491. 

 Spirosperma, 508. 

 Spirostonmm, 48. 

 Spirotricha, 48. 

 Spiroxys, 289. 

 Spirula, 425, 440, 445. 

 Spirulirostra, 425. 

 Spondylomorum, 32. 

 Spondylus. 333, 334, 



344, 347. 



Sponge spicules, 81-84. 

 Spongelia, 98. 

 Spongelidae, 98. 

 Spongidae, 97. 

 Spongilla, 96. 



Spongillidae, 72. 

 Spongin, 73. 

 Spongiobranchaea, 408. 

 Spongioderma, 182. 

 Spongodes, 179. 

 Spongodiscus, 23. 

 Spongomonas, 31. 

 Spongophare, 77. 

 Spongurus, 23. 

 Sporadopora, 129. 

 Sporangia, 16. 

 Spores, 5. 

 Sporoblast, 66. 

 Sporocyst, 229. 

 Sporogony, 120. 

 Sporophore, 16. 

 Sporosac, 120. 

 Sporozoa, 54. 

 Sporozoite, 60. 

 Spyroidea, 23. 

 Squamulina, 13. 

 Squid, 425. 

 Stachyodes, 182. 

 Stachyptilum, 181. 

 Staircase shell, 396. 

 Stannomidae, 98. 

 Statoblast, 555. 

 Stauractis, 188. 

 Stauraglaura, 135. 

 Stauridae, 175. 

 Stauridium, 130, 131. 

 Staurobrachinm, 134. 

 Staurocephalus, 480. 

 Staurodiscus, 134. 

 Stauromedusae, 163. 

 Staurophora, 134. 

 Staurospbaera, 23. 

 Staurostoma, 134. 

 Staurotheca, 133. 

 Steenstrupia, 109, 131. 

 Steganophthalmata, 117. 

 Steganoporella, 565. 

 Stelospongia, 98. 

 Stelletta, 94. 

 Stemonitis, 17. 

 Stenella, 182. 

 Stenogorgia, 183. 

 Stenohelia, 129. 

 Stenoptycha, 167. 

 Stentor, 38, 40, 48. 

 Stenostomum, 214, 219. 

 Stephalia, 154 

 Stephanactis, 187. 

 Stephanaria, 196. 

 Stephania, 477. 

 Stephanium, 23. 

 Stephanoceros, 300, 301, 



307. 



Stephanomia, 153. 

 Stephanophyes, 149. 

 Stephanophyllia, 196. 



Stephauopogon, 46. 



Steplianops, 309. 



Stephauoseris, 196. 



Stephanosphaera, 32. 



Stephanospira, 153. 



Stepliauotrochus, 194. 



Stephoidea, 23. 



Stephonalia, 154. 



Stenocephalus, 59. 



Stercutus, 509. 



Stereosoma, 177, 178. 



Sternaspis, 450, 462, 465, 

 489. 



Sthenelais, 478. 



Sthenonia, 167. 



Stichodactylinae, 186. 



Stichopathes, 190. 



Stichotricha, 49. 



Stigmata in Protozoa, 28. 



Stigmosphaera, 23. 



Stilifer, 361, 386, 402. 



Stiliger, 413. 



Sting-winkle, 396. 



Stoeba, 94. 



Stolonifera, 178, 567. 



Stoloteuthis, 445. 



Stomach of Ctenophore, 

 197. 



Stomatella, 362, 395. 



Stomatia, 395. 



Stomatogastric commis- 

 sure, 319, 362. 



Stomatopora, 566. 



Stomidia, 186. 



Stomobrachium, 134. 



Stomodaeum of Mol- 

 lusca, 320. 



Stomolophus, 168. 



Stomotoca, 131. 



Stomphia, 187. 



Streptaster. 85. 



Streptocaulus, 133. 



Streptoneura, 364, 392. 



Strobalia, 153. 



Strobila, 157, 243. 



Stabilisation, 160. 



Strombidium, 49. 



Strombus, 378, 386, 399. 



Strongyle, 83. 



Strongylidae, 278. 



Strongylidium, 49. 



Strongylus, 284. 



Strophogorgia, 182. 



Structureless lamella, 99. 



Struthiolaria, 400. 



Stryphnus, 94. 



Stuhlmannia, 511. 



Stylactis, 130. 



Stylaria, 509. 



Stylarioides, 489. 



Stylaster, 129. 



