INDEX. 



613 



Potamolepis, 96. 

 Poterion, 97. 

 Poulpe, 446. 

 Pourtalosmilia, 195. 

 Praxilla, 488. 

 Pray a, 149. 

 Prestomiurn, 447. 

 Preussia, 511. 

 Pri&puloidea. 540. 

 Priapulus, 541. 

 Primary mesentery, 184. 



,, zooecium, 560. 

 Primite, 57. 

 Primnoa, 182. 

 Primnoella, 182. 

 Primnoisis, 182. 

 Prionastraea, 196. 

 Prionognathus. 480. 

 Prionospio, 483. 

 Prismatic layer, 326, 327. 

 Pristina, 509. 

 Proales, 309. 

 Proboscidae, 214. 

 Proceraea, 476. 

 Procerodes, 221. 

 Procharagma, 166. 

 Procharybdis, 166. 

 Procotyla, 221. 

 Proctodaeum of mollusca, 



320. 



Proctonotus, 413. 

 Procyanea, 167. 

 Productidae, 585. 

 Proglottis. 244. 

 Prohelia, 195. 

 Promesostomum, 219. 

 Proneomenia, 355. 

 Pronepbridia of Oligo- 



chaeta, 502. 

 Pronucleus, 45. 

 Propilidium, 395. 

 Propodium, 357. 

 Proporus, 219. 

 Prorhynchocoelomia. 



271. 



Prorhynchus, 219. 

 Prorocentrimi, 34. 

 Prorodori, 45. 

 Prorotrichina, 46. 

 Prosadenoporus, 271. 

 Prosbosoidactyla, 134. 

 Proserpina, 395. 

 Prosobranchiate, 374. 

 Prosodus, 78. 

 Prosopyle, 75. 

 Prosorochmus, 269, 271. 

 Prostalia, 91. 

 Prostate of Oligochaeta, 



504. 



Prostlieceraeus, 223. 

 Prosthiostomum, 223. 



Prostomum, 214. 

 Protactiniae, 189. 

 Protamoeba, 11. 

 Protanthea, 189. 

 Protantheae, 189. 

 Proteleia, 94. 

 Proteosoma, 63. 

 Proterospongia, 33. 

 Protiara, 131. 

 Protis, 491. 

 Protoalcyonaria, 178. 

 Protobranchiata, 345. 

 Protocaulon, 181. 

 Protodrilus, 451, 452, 



453, 457. 

 Protogene, 11. 

 Protohydra, 127. 

 Protomerite, 56. 

 Protomonas, 29. 

 Protomyxa, 11. 

 Protonemertini, 270. 

 Protoplasm, 1. 

 Protoptilnm, 181. 

 Prototrichia, 17. 

 Protozoa, 1. 

 Protula, 466, 491. 

 Protulides, 491. 

 Provortex, 220. 

 Proxenetes, 220. 

 Prunoidea, 23. 

 Pmno})hracta, 23. 

 Psamathe, 477. 

 Psammastra, 94. 

 Psamminidae, 98. 

 Psammobia, 348. 

 Psammocora, 196. 

 Psammogorgia, 183. 

 Psammolyce, 478. 

 Psammopemma, 98. 

 Psammoplysilla, 98. 

 Psammoryctes, 508. 

 Psarnmoseris, 196. 

 Psarnmosphaera, 13. 

 Pseudalius, 235. 

 Pseudaxine, 236. 

 Pseudaxonia, 182. 

 Pseudoceridae, 210. 

 Pseudoceros, 217, 223. 

 Pseudocotyle, 234. 

 Pseudogorgia, 178. 

 Pseudolamell ibranchiata , 



346. 



Pseudomelaniidae, 399. 

 Pseudonavicella, 58. 

 Pseudopallium, 356. 

 Pseudopodium, 1 ; in 



Rotifera, 299. 

 Pseudorbabdite, 211. 

 Pseudorhynchus, 220. 

 Psilacabaria, 182. 

 Psilotricha, 49. 



Psorosperms, 64. 

 Psygmobranchus, 473, 



491. 



Ptenoglossa, 396. 

 Pteroceras, 361, 399. 

 Pterocyclus, 398. ^ 

 Pterodina, 310. 

 Pteroeides, 181. 

 Pteroessa, 309. 

 Pteronella, 234. 

 Pteronema, 131. 

 Pteropathes, 190. 

 Pteropoda Gymnoso- 



niata, 407 ; Theooso- 



mata, 406. 

 Pterosyllis, 476. 

 Pterotrachea, 356, 362, 



385, 401, 402. 

 Ptilosarcus, 181. 

 Ptychobothrmm, 256. 

 Ptychogena, 134. 

 Ptychostomum, 47. 

 Puberty, 43. 

 Pullenia, 14. 

 Pulmonary cavity, 374. 

 Pulmonata, 414. 

 Pulsellum, 352. 

 Pulvinulina, 14. 

 Puncturella, 394. 

 Pupa, 380, 416. 

 Pupilla, 362, 394. 

 Pupina, 398. 

 Purpura, 396. 

 Pustularia, 362, 400. 

 Pustulopora, 566. 

 Pycnanthus, 187. 

 Pyrenoid, 28. 

 Pvrophacus, 34. 

 Pyrula, 400. 

 Pytheas, 96. 

 Pyxidicula, 12. 



Q.J.M,S. = Quarterly 

 Journal of Micro- 

 scopical Science. 



Quadriloncbe, 23. 



Quadrula, 12. 



Quasillina, 97. 



Quinqueloculine, 9. 



Rachidean tooth, 370. 

 Rachiglossa, 396. 

 Racodiscula 94 

 Radiolaria, 20. 

 Radula, 320, 369. 

 Ragactis, 188. 

 Rainey's corpuscles, 68. 

 Ramate, 307. 

 Ramulus, 126. 

 Ranms, 307. 

 Ranella, 400. 



