INDEX. 



595 



Polyzoa, 53, 56, 389, 571, 572, 576. 



Polyzoarium, 390. 



Poritellidae, 237, 318. 



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



Porpita, 51, 127. 



Pontes, 151. 



Prawn, 300. 



Priapulus, 216. 



Primordial utricle, IS. 



Proctucha, 158, 162. 



Productidse, 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, 38, 47, 48, 54, 61, 62, 73, 102, 103, 



108, 574. 

 Protozoic series, 579. 

 Protula, 207, 215. 



Dysteri, 208. 



Provinces of distribution, 24. 

 Pseud-htemal system, 57. 

 Pseudo-filaria, 88, 89. 

 Pseudo-navicella, 88. 

 Pseudophyllidea, 187. 

 Pseudopodia, 29, 73, 75. 

 Pseudo-scorpions, 326. 

 Psychology, 9. 



Pteropoda, 58, 68, 401, 424, 432-434. 

 Pterygotus, 233. 

 Pulicidse, 381. 



Pulmogasteropoda, 59, 424, 433. 

 Pulmonary sacs, 59. 

 Pulmonata, 423-429, 440. 

 Pulvinularia, 79, 80. 

 Pupipara, 367. 

 Pycnogonida, 331, 573. 

 Pyrosoma, 514, 528. 

 giganteum, 523. 



R 



Radiolaria, 12, 46-43, 68, 80-83, 98, 564, 574. 



Eedia, 179, 181. 



Reef-builders, 149. 



Renierinse, 109. 



Reproductive system, 65. 



Respiratory system, 53. 



Rhabdoccela, 159. 



Rhabdopleura, 396, 397. 



Rhachis, 548. 



Rhizocephala, 253, 263. 



Rhizocrinus lofotensis, 498. 



Rhizostomidae, 124. 



Rhodope, 425. 



Rhopalodina, 470. 



Rhynchoccele turbellaria, 163. 



Ruynchonella, 398, 400. 



Rhynchonellidae, 403. 



Rock-builders, 81, 82. 



Rotalia, 78. 



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

 Rugosa, 148, 149, 153. 



Saccttlina purpurea, 262. 

 Sagitta, 68, 542, 577. 

 Salpa, 36, 514, 518, 531, 532. 

 Salpingoeca, 90. 

 Sarsia prolifera, 120. 

 Saxicava, 40S. 

 Scallop, 408. 



Scalpellum vulgare, 260-262. 

 Scaphopoda, 430-433. 

 Schizocoele, 51, 52, 219. 

 Schizopoda, 293, 299. 

 Scolopendra 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. 



Sepiadae, 446,452, 463, 465. 



Sepia officinalis, 446, 453. 



Serial relations of invertebrata, 578. 



Serpulidae, 207, 214. 



Sertularidas, 117, 118. 



Shrimp, 303. 



Siphonophora, 118, 127, 133. 



Sipunculns nudus, 216-218. 



Snail, 442. 



Solenhofen slates, 136. 



Somatopleure, 57. 



Somites, 200. 



Sounds from insects, 376. 



Spatangoida, 439. 



Spermatophores, 454. 



Sphaerornidse, 815. 



Sphaerozoum ovodimare, 84, S5. 



punctatum, 84. 



Sphinx ligustri, 367. 



Spiders, 326. 



Spiriferidae, 403. 



Spirillum volutans, 12. 



Spirorbis, 207. 



Spirostomum, 97. 



Spirulidae, 463. 



Splanchnopleure, 56, 57. 



Spongida, 102, 567. 



Spongilla, 104, 111. 



fiuviatilis, 103, 107. 



Sporocysts, 182. 



Springs, hot, living things in, 14. 



Squids, 463. 



Squilla, 312, 319. 



scabricauda, SIS, 319. 



Star-fish, 474. 



Stentor, 100. 



Stephanoceros, 167, 169, 170. 



Sternaspis, 215. 



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. 



