INDEX. 



6 13 



Potamolepis, 96. 

 Poteriou, 97. 

 Poulpe, 446. 

 Pourtalosmilia, 195. 

 Pi-axilla., 488. 

 1'raya, 149. 

 Prestomiura, 447. 

 Preussia 511. 

 Priapuloidea, 540. 

 Priapulus. 541. 

 Primary mesentery, 184. 

 ,, /ooecium, 560. 

 1'riiiiite, 57. 

 Prinmoa. 182. 

 Primnoella, 182. 

 Prinmoisis, 182. 

 Prionastraea, 196. 

 Prionognathus. 480. 

 Priouospio, 483. 

 Prismatic layer, 326, 327. 

 Pristina, 509. 

 I 'males. 309. 

 Proboscidae, 214. 

 Proceraea, 476. 

 Procerodes 221. 

 Procharagraa, 166. 

 Procharybdis. 166. 

 Procotyla, 221. 

 ProctodaeumofmolliTsca, 



320. 



Proctonotus. 413. 

 Procyanea, 167. 

 Productidae, 585. 

 Proglottis '244. 

 Prohelia, 195. 

 Promesostomum, 219. 

 Proneomema, 355. 

 Pronepliridia of Oligo- 



chaeta, 502. 

 Pronucleus, 45. 

 Propilidium, 395. 

 Propodium, 357. 

 Proporus, 219 

 Prorhynchocoelomia, 



271." 



Prorhynchus, 219. 

 Prorocenti uni, 34. 

 Prorodon, 45. 

 Prorotrichina, 46. 

 Prosadenoporus, 271. 

 Prosboscidactyla, 134. 

 Proserpina, 395. 

 Prosobranchiate, 374. 

 Prosodus, 78. 

 Prosopyle, 75. 

 Prosorochnms, 269, 271. 

 Prostalia, 91. 

 Prostate of Oligochaeta, 



504. 



Prostheeeraeus, 223. 

 Proathioatomum, 223. 



Prostomutn, 12 

 Protactiuiae, 189. 

 Protamoeba, 11. 

 Protanthca, 189. 

 Protiiiitlieac. 189. 

 Proteleia, 94. 

 Proteosoma, 63. 

 Proterospongia, 33. 

 Protiara, 131. 

 Protis, 491. 

 Protoalcyonaria, 178. 

 Protobranchiata, 345. 

 Protocatilon, 181. 

 Protodrilus, 451, 452, 



453, 457. 

 Protogene, 11. 

 Protohydra, 127. 

 Protomerite, 56. 

 Protomonas, 29. 

 Protomyxa, 11. 

 Protonemertiui, 270. 

 Protoplasm, 1. 

 Prot-.ptihim, 181. 

 I'roTotrichia, 17. 

 Protozoa, 1. 

 Protula. 466. 491. 

 Protulides. 491. 

 Provortex, 220. 

 Proxenetes, 220. 

 Prunoidea, 23. 

 Prunophracta, 23. 

 Psamathe, 477. 

 Psammastra, 94. 

 Psamminidae, 98. 

 Psamiuoliia, 348. 

 Psanmincora, 196. 

 Paammogorgia, 183. 

 Psammolyce, 478. 

 Psammopemma, 98. 

 Psammoplysilla. 98. 

 Psammoryctes, 508. 

 Psanimoseris, 196. 

 Psammosphaera, 13. 

 Pseudalius, 235. 

 Pseudaxine, 236. 

 Pseudaxonia, 182. 

 Pseudoceridae, 210. 

 Pseudoceros, 217, 223. 

 Pseudocotyle, 234. 

 Pseudcigorgia, 178. 

 Pseudolamellibranchiata, 



346 



Pseudomelaniidae. 399. 

 Pseudonavicella, 58. 

 Pseudopallium, 356. 

 Pseud opodium, 1 ; in 



Rotifera. 299. 

 Pseudorhabdite, 211. 

 Pseudoihynchus, 220. 

 Psilacal.aria, 182. 

 Psilotricha, 49. 



Psoroaperms, 'i I. 

 Psygmobranchus, 473, 



491. 



Ptenoo-lossa, 396. 

 Pteroceras, 361, 399. 

 Pterocyclus. 398. 

 Pterodina, 310. 

 Pteroeides, 181. 

 Pteroessa, 309. 

 Pteronella, 234. 

 Pteronema, 131. 

 Pteropatlies, 190. 

 Pteropoda G-ymnoso- 



mata, 407 ; Tlic.-oso^ 



inata, 406. 

 Pterosyllis, 476. 

 Pterotrachea, 356, :M2, 



385, 401, 402. 

 Ptilosarcus, 181. 

 Ptychobothrium, 256. 

 Ptycliofjena, 134. 

 Ptychostoinum, 47. 

 Puberty, 43. 

 Pnllenia, 14. 

 Pulmonary cavity, o74. 

 Pulmonata, 414. 

 Pulsellum, 352. 

 Pulvinnlina, 14. 

 Puiictni-ella, 394. 

 Pupa, 380, 416. 

 Pupilla, 362, 394. 

 Pupina, 398. 

 Purpura, 396. 

 Pustnlaria, 362, 400. 

 Pustulopora, 566. 

 Pycnanthns, 187. 

 Pyrenoid, 28. 

 Pvrophacus, 34. 

 Pyrula, 400. 

 Pytheas, 96. 

 Pyxidicula, 12. 



Q.J.M.H = Quarterly 

 Journal of Micro- 

 scopical Science. 



Quadrilonche, 23. 



Quadrnla, 12. 



Quasillina, 97. 



Quinqueloculine, 9. 



Kachidcan tooth, 370. 

 Eachiglossa, 396. 

 Racodiscula. 94 

 Radiolaria, 20. 

 Radula, 320, 369 

 Ragactis, 188. 

 Rainey's corpuscles, 68. 

 Ramate, 307. 

 Ramnlus, 126. 

 Ranius, 307. 

 Ranella, 400. 



