INDEX. 



595 



folyzoa, 53, 56, 3S9, 571, 572, 576. 



Polyzoarium, 390. 



Poritellidae, 237, 318. 



Porifera, 51, 55, 62, 102, 109, 574. 



Porpita, 51, 127. 



Porites, 151. 



Prawn, 300. 



Priapulus, 216. 



Primordial utricle, 18. 



Proctucha, 158, 162. 



Prrjdiictidae, 403, 404. 



Proglottis, 186. 



Prosobranchiata, 438, 439, 444. 



Protamoeba, 75, 86-89. 



Protein, 9. 



Proteolepas bivincta, 261. 



Proteus, 60. 



animalcules, 86. 



Protococcus, 12, 17. 



Protogenes, 75-78, 86, 89. 



Protomonas, 77, 85, 89. 



Protomyxa aurantiaca, 76. 



Protoplasm, 9, 14. 



Protoplasta, 86, 574. 



Protozoa, 88, 47, 48, 54, 61, 62, 73, 102, 103, 



108, 574. 

 Protozoic series, 579. 

 Protula, 207, 215. 



Dysteri, 208. 



Provinces of distribution, 24. 

 Pseud-lifipmal system, 57. 

 Pseudo-filaria, 88, 89. 

 Pseudo-navicella, 88. 

 Pseudophyllidea, 187. 

 Pseudopodia, 29, 73, 75. 

 Pseudo-scorpions, 326. 

 Psychology, 9. 



Pteropoda, 58, 68, 404, 424, 432-434. 

 Pterygotus, 233. 

 PulicidiB, 381. 



Pulmogasteropoda, 59, 424, 433. 

 Pulmonary sacs, 59. 

 Pulmonata, 423-429. 440. 

 Pulvinularia, 79, 80. 

 Pupipara, 367. 

 Py^nogonida, 331. 573. 

 Pyrosoma, 514, 528. 

 giganteum, 523. 



Radtolaria, 12, 46-48, 68, 80-83, 98, 564, 574. 



Redia, 179, 181. 



Reef- builders, 149. 



Renierinae, 109. 



Reproductive system, 65. 



Respiratory system, 58. 



Rhabaocoela, 159. 



Rhabdopleura, 396, 397. 



Rhachis. 548. 



Rhizocephala, 2.53, 263. 



Rhizocrinus lofotensis, 498. 



Rhizostomidae, 124. 



Rhodope, 425, 



Rhopalodina, 470. 



Rhynchocoele turbellaria, 163. 



Rliynchonella, 398, 400. 



Rhynchonellidae, 403. 



Rock-builders, 81, 82. 



Eotalia, 78. 



Rotifera, 12, 56, 89, 157, 162, 166, 574. 

 Rugosa, 148, 149, 153. 



Sacculina purpurea, 262. 

 Sagitta, 68, 542, 577. 

 Salpa, 36, 514, 518, 5=31, 532. 

 Salpingoeca, 90. 

 Sarsia prolifera, 120. 

 Saxicava, 408. 

 Scallop, 408. 



Scalpellum vulgare, 260-262. 

 Scaphopoda, 430-433. 

 Schizocoele, 51, 52, 219. 

 Schizopoda, 293. 299. 

 Scolopeiidra borbonica, 337. 



Hopei, 338. 



Scorpio afer, 321. 



Scorpions, 59, 320, 323, 324. 



Scrupocellaria ferox, 392. 



Scyllarus, 294. 



Sea anemones, 110. 



Sensitive plant, 44. 



Sensory organs. 27. 



Sepiadie, 4^6,452, 463, 465. 



Sepia officinalis, 446, 453. 



Serial relations of invei-tebrata, 578. 



Serpulidae, 207, 214. 



Sertularidaj, 117, 118. 



Shrimp. 303. 



Siphonophora, 118, 127, 133. 



Sipuncultis nudus, 216-218. 



Snail, 442. 



Solenhofen slates, 136. 



Somatopleure, 57. 



Somites, 200. 



Sounds from insects, 376. 



Spatangoida, 489. 



Spermatophores, 454. 



Sphaeromida3, 315. 



Sphierozoum ovodimare. 84, SS. 



punctatum, 84. 



Sphinx Ugustri, 367. 

 Spiders, 326. 

 Spiriferidae, 403. 

 Spirillum volutans, 12. 

 Spirorbis, 207. 

 Spirostomum, 97. 

 Spirulidae, 463. 

 Splanchnopleure, 56, 57. 

 Spongida, 102, 567. 

 Sponii-illa, 104, 111. 



fluviatilis, 103, 107. 



Sporocysts, 182. 



Springs, hot, living things in, 14. 



Squids, 463. 



Squilla, 312, 319. 



scabricauda, 318, 319. 



Star-fish, 474. 



Stentor, 100. 



Stephanoceros, 167, 169, 170. 



Sternaspis, 21.5. 



Stigmata. 59, 325, 339, 356, 374. 



Stings of insects, 372. 



Stomatopoda, 237, 317. 



Stone corals, 147, 149. 



Strepsiptera, 371, 387. 



Strombidium, 94. 



" Struggle for existence," 30. 



