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. 

 PotygordiuSj6l$\ 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. 

 Polyopthalmus, eyes of, 599. 

 Polyparium ambttlans, xviii, 



716. 



Polyplacophora, 472. 

 Polypodium 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, v. 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, 



I97>3 J 7; 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. 

 Protopierus, 432. 

 Prototheria, 370. 

 Protozoa, 818 ; v. Parame- 



cium, Amoeba, 

 Protozoaea, 538. 

 Protracheata, xvii, 519-522. 

 Pseudaxonia, 732. 

 Pseudobranchia, Teleostei, 



87, 422. 

 Pseudocercaria, 86 1. 



Pseudocode, 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- 



