INDEX. 



933 



Pleuron, pleura, Astacus, 



163, 164. 



Pleuronectidae, eyes of, 429. 

 Ploughshare bone, 60 ; cf. 63. 

 Plutellus, nephridia, 205 ; 



ovaries, 207. 

 Pluteus, 516, 548, 569. 

 Pneumatic bones, 58, 62, 388. 

 Pneumatophore, 771. 

 Pneumodermonidae, 469. 

 Pneumonochlamyda, 482. 

 Pneumonophora, 553. 

 Podical plate, 142. 

 Podobranchia, 182. 

 Poecilopoda, 529. 

 Poison glands, Ophidia, 68, 



71 ; epidermic of Amphibia, 



75 ; of Tegenaria, 304. 

 Polar bodies or globules, 



xxiii, xxiv n. 

 Polian vesicles of Echino- 



dermata, 546, 551, 560. 

 Polychaeta, 610. 

 Polyclinidae, 447. 

 Polygordiidae, 614-616. 

 Polygordius,6i$', larval ne- 

 phridia, 582, 615; larvae, 



583, 615. 



Polymeniscous eye, 492. 

 Polymnia (Terebella) nebu- 



losa, nephridia, 582. 

 Polymorphism in Polyzoa, 



237-238. 



Polymorphosis, 382, 791. 

 Polyoplhalmus, eyes of, 599. 

 Polyparium ambulans, xviii, 



716. 



Polyplacophora, 472. 

 Poly podium hydriforme, 766. 

 Polypomedusae, v. Hydroi- 



dea. 



Polypteridae, 431. 

 Polystomeae, 653. 

 Polystomum integerrimum, 



75, 650. 

 ' Polythalamous ' Foramini- 



fera, 885. 

 Polytrochae, 606. 

 Polyzoa, 704 ; v. Flustra. 

 ' Porcellanous' Foraminifera, 



884. 

 Pore areae, 557; fasciae, 557; 



plates, 556. 



Pores, inhalent, 250, 251,792. 

 Pori abdominales, 275, 357, 



426, 436. 



Pori aquiferi, 129, 488. 

 Porifera, 790-813 ; phyloge- 



netic relations, 715, 808 ; 



v. Spongilla. 

 Porospora gigantea, 176, 



861. 

 Porus genitalis, Taenia, 224. 



Post-anal gut, 335, 348. 

 Post-clavicle, 95. 

 Postclitelliani, 207. 

 Post-pubis, 65. 

 Potamobiidae, 182. 

 Praecoces, 380. 

 Prae-operculum, y. Opercu- 



lum of Teleostei. 

 Prae-pubis, 65. 

 Prestwichia, 496. 

 Primates, 368. 

 Primitive streak, xxix n. 

 Privet Hawk Moth, v. 



Sphinx, imago. 

 Pro-atlas, 8. 

 Proboscidea, 368. 

 Proboscis gland of Entero- 



pneusta, 591. 

 Procoelous vertebra, 340. 

 Proctodaeum, xxviii. 

 Pro-echidna, 370. 

 Proglottis of Cestoda, 225, 



656; individuality of, 231- 



232. 



Prolegs, 148, 149, 500. 

 Proneomenia, 472. 

 Pronephros, 354. 

 Pronuclei, xxv. 

 Propodite, 163. 

 Proscolex, 228, 232, 233, 325, 



656, 663 ; v. also Taenia. 

 Prosopocephala = Scapho- 



poda. 



Prostatic glands, 31. 

 Prostomium of Lumbricus, 



197, 317; Chaetopoda, 593; 



nervous supply of antennae 



in Chaetopoda, 593 n ; of 



Archi-annelida, 613 ; of 



Gephyrea, 617, 624. 

 Protamoeba, 920. 

 Proteomyxa, 915-922. 

 Proteus, 408. 

 Prothorax, v. Thorax. 

 Protobathybius, 920. 

 Protoconch, 458. 

 Protodrilus, 614, 6 1 6. 

 Protomerite, 858. 

 Protomonas, 917. 

 Protomyxa, 918. 

 Protonopsis, 408. 

 Protoplasm, xxi. 

 Protopodite, 163. 

 Protoplerus, 432. 

 Prototheria, 370. 

 Protozoa, 818 ; v. Parame- 



cium, Amoeba. 

 Protozoaea, 538. 

 Protracheata, xvii, 519-522. 

 Pseudaxonia, 732. 

 Pseudobranchia, Teleostei, 



87, 422. 

 Pseudocercaria, 86 1. 



Pseudocoele, xxix. 

 Pseudocone eyes of Insecta, 



502. 



Pseudofilaria, 861. 

 Pseudogaster of Porifera, 



791. 



Pseudo-keratose, 797. 

 Pseudo-navicella, 860 n. 

 Pseudophyllidea, 666. 

 Pseudopodia, 256, 819. 

 Pseudorhabdites, 667. 

 Pseudo-scorpionidae, 529. 

 Pseudospora, 917. 

 Pseudotetraxonia, 810. 

 Pseudo-trachea, 145. 

 Pteranodon, 392. 

 Pterobranchia, 711-712. 

 Pterocymodoceidae, 469. 

 Pterodactyla, 392. 

 Pterophoridae, 510. 

 Pteropoda, 467-469. 

 Pterosauria, 392. 

 Pterotic, 91. 

 Pterotracheacea, 482. 

 Pterygogenea, 499, 509. 

 Pterygopodia, 417, 428. 

 Pubis, v. Pelvis. 

 Pulmonary chamber, in. 

 Pulmonata, 483 ; v. Helix, 



Limax. 



Pulsatella Convolutae, 670 n. 

 Punktsubstanz, 189. 

 Pupa, Insectan, 152. 

 Purkinje, vesicle of, xxiii. 

 Purple gland of Mollusca, 



474, 483- 



Pycnogonidae, 542-543. 

 Pygostyle, 60 ; cf. 63. 

 Pyloric appendages, 87, 421 ; 



caeca, 139. 



Pyramidalis muscle, 52. 

 Pyrenoids of Flagellata, 843. 

 Pyrosoma, 446, 447. 

 Python, vertebrae, 72, 73. 



Q- 



Quadrate bone, 338, 339. 

 Quadratus muscle, 52, 375. 



R. 



Rabbit, v. Lepus cuniculus. 

 Radials s. Radialia, 341, 416- 



I 7- 

 Radii, Asterias, 190. 



Radiolaria, 874-884. 

 Radius, v. Fore-limb. 

 Radula, 113, 115, 452, 461, 



466, 468, 471, 477- 

 Rainey's corpuscles, 863. 

 Raja, plate and description, 



272-279 ; urogenital sys- 



