326 



INDEX 



Pallial line, 128, 130 



Palp, 102 ; labial, 82, 134; maxillary, 80 



Pancreas, 158, 194, 242, 272 



Pannioulus adiposus, 268 ; carnosus, 268 



Papilla, 50 (genital), 162 (urinary) 



Paragastric cavity, 16, 20, 22 



Paraglossa, 82 



Paragnatha, 104 



Paramecium (Slipper Animalcule), 6-8 ; form 

 and general structuie, 6; 316 



Parasite, 10, 32, 40, 46, 62 



Para-sphenoid, 226 



Parenchyma, 44, 52 



Parietal bone, 262, 292 ; segment, 292 



Par-occipital processes, 292 



Patella or knee-pan, 256, 310 



Pectoral fin. See Fin 



Pectoral girdle, 164, 166, 194, 218, 250, 252, 

 304 



Pelecypoda. iSee Lamellibranchiata 



Pellicle, 6, 10 



Pelvic fin. See Fin 



Pelvic or hip girdle, 218, 222, 252, 254, 308 



Pelvic symphysis, 308, 314 



Pelvis, 308 



Penis, 42, 70, 120, 266, 290 



Pereiopods or walking legs, 98 



Pericardio-peritoneal canal, 170 



Pericardium, 104, 116, 134, 136, 166, 168, 202, 

 246, 268, 282 



Perilymph, 186 



Perineal glands, 266, 290 



Periostracum, 126, 130 



Periotic, 296, 312 



Peripheral nervous system, i48, 228 



Pertpfcmeto, 74-86, 316. jSee Cockroach 



Peristome, 8, 34 



Peritoneal cavity, 162 



Peritoneum, 158, 214, 218, 240, 268, 270 



Pes or foot, 190, 268, 312 



Petrous portion of periotic bone, 296 



Phalanges, 254, 256, 308, 312 



Pharynx : Liver-fluke, 40 ; earth-worm, 56 ; 

 leech, 66; snail, 118; Amphioxus, 144, 148; 

 dogfish, 176 



PhyUoaoma larva of Cape Crawfish (Jasua), 110, 

 112 



Pia mater, 228 



Pigeon (Golwmha), 236-264; external features, 

 236 ; feathers, 236 ; mouth cavity, 236 ; 

 pectoral muscles, 238 ; skeletal system, girdles 

 and limbs, 238, 250, 252, 254, 256, 258; 

 vertebral column, etc., 256-260; skull, 260, 

 262, 264 ; air-saos, 238, 242, 244, 252 ; viscera 

 in situ, 240 ; alimentary system, 242, 244 ; 

 respiratory organs, 244 ; vascular system, 244, 

 246, 248 ; renal and reproductive systems, 

 248, 250 ; nervous system (brain), 264; 316 



Pigment spots, 148 



Pineal body or epiphysis, 176, 228 



Pinnae (ears), 266 



Pisces (Fishes), 316 



Pisiform, 308 



Pituitary body, 178 



Placenta, allantoic, 316 



Placoid scales, 152, 154, 316 



Platana. See Xenopus 



Platyhelminthes (Flat worms), 316 



Pleopods, 98 



Pleura, 88 



Pleural sacs, 268 



Pleurobranch gill, 94 



Plexus, brachial and sciatic, 228 ; solar, 232, 

 278, 282 



Ploughshare bone or pygostyle, 260 



Podical plates, 74 



Podobranch gill, 94, 98 



PoUex (thumb), 188, 266, 308 



Polyp, Fresh-water. See Hydra 



Pore, abdominal, 152, 154 ; dorsal, 54 ; ex- 

 cretory, 40 ; inhalent, 14, 18, 20 ; tentacle, 34 



Porifera (Sponges), 14-24 ; form and general 

 structure, 14 ; spicules, 16, 18 ; types of 

 canal system, 18-24 ; 316 



Porocyte, 16, 20 



Portal vein. See Vein 



Post-orbital process, 262 



Pre-axial digit, 308, 312 



Preen or oil gland, 238 



Premaxilla, 222, 224, 226, 262, 296 



Premolar teeth, 296 



Prepuce, 266 



Pre-sphenoid, 260, 292 



Prestomium, 54 



Pre-zygapophyses, 302 



Primary feathers, 236 ; rods, 144 



Prismatic or limy layer of shell, 130 



Procoelous. See Vertebra 



Proctodaeum. See Hind-gut 



Proglottides, 48 



Proglottis, 46, 48, 50 (transverse section), o2 



Pronotum, 74 



Pro-otic, 224, 226 



Propodite, 98 



Pro-pterygium, 164 



Prosencephalon. See Fore-brain 



Prosopyle, 14, 20, 22, 24 



Prostate, 290 



Proteus Animalcule. See Amoeba 



Prothorax, 74 



Protoplasm, 2, 12 (residual) 



Protopodite, 96, 98, 100, 102 



Protozoa, 316 



Proventriculus, 82, 242 



Pseudobranoh (rudimentary gill), 152, 154 



Pseudonavicella (spore), 10, 12 



Pseudopodia, 2, 30 



Pterygoid bone, 224, 226, 262, 296 



Pterygoid process, 292 



Pubic symphysis, 310 



Pubis, 218, 256, 310, 314 



Pulmonary or respiratory aperture, 114; cham- 

 ber, 114 



PulviUus, 82 



Pygostyle, 260 



Pylangium, 170 



Pyloric chamber of stomach, 104, 106, 158. 272 



Pylorus or pyloric constriction, 158, 196, 212, 

 270 



Q 



QuADKATE, 224, 226, 264 

 Quadrato-jugal, 224, 226, 262 

 Quill. See Calamus 



R 



Rabbit {Lepiis), 266-314; external features, 

 266 ; thoracic and abdominal viscera, 268 ; 

 alimentary and vascular systems, 272, 276, 

 282 ; structures of the neck, 274, 280 ; solar 



