INDEX. 



325 



Patella (Lat. a little dish), 183 ; of 



the sloth, 192 

 Pectoral fiu of the cod-fish (Lat. 



pectus the breast), 41 

 Pelvic arch of the crocodile, 119 

 Pelvis of birds (Lat. pelvis a basin), 



144 

 Pentadactyle foot of birds (Gr. 



pente five, and daktylos a finger 



or toe), 148 

 Perch, teeth of the, 241 

 Percoids (Gr. perkos spotted, and 



eidos appearance), osteodentine of 



the, 247 

 Periosteum (Gr. peri and osteon 



around the bone), 22 

 Perissodactyla or Perissodactyles 



(Gr. perissos an odd number, and 



daktijlos a finger or toe), 169, 



171 ; the extinct and existing 



genera of, 171 ; dentition of the, 



307 

 Petrosal bone (Gr. petros a stone), 



48 

 Phalanx (Gr. a row of soldiers), 118 

 Pike, skull and teeth of the, 240 

 Pisiforme bone (Lat. pisum a pea, 



and/or??ia form), 118; one of the 



carpal bones, 216 

 Pithecus Satyrus (Gr. pithex an 



ape), skeleton of the, 210, 211 

 Plasma (Gr. plasma assimilation), 



the colorless fluid of the blood, 13 

 Plastron of the turtle, 126 

 Platax (Gr. plains -wide), teeth of 



the, 242 

 Platycoelian type of vertebrte (Gr. 



plains fiat, and koilos concur q), 98 

 Pleurapophyses (Gr. pleuron a rib, 



and apophysis springing from), 



bones of the vertebi'a, 27 et seq. 



ssepe. 

 Plicidentine (Lat. plica to knit to- 

 gether, and dens a tooth), in vari- 

 ous genera of fishes, 247 

 Poison-fangs of snakes, 256, 257 

 Polypterus (Gr. pohi and pteron 



niany-finned), a fish of the Nile, 



19 

 Porcupine, skull and teeth of the, 



267 

 Porpoise, teeth of the, 259 



28 



Post-frontals of the skull (Lat. post 

 behind, and frons the forehead), 

 45, 80 



Postglenoid process of the horse 

 (Lat. post behind, and Gr. glene 

 the pupil of the eye), 169 



Prefrontals of the skull (Lat. praR 

 before, and frons the forehead), 

 47, 80 



Premandibular bone (Lat. prae^ be- 

 fore, and mandihula the mandi- 

 ble), 245 



Premaxillary (Lat. pras, before, and 

 maxilla the jaw), process of the, 82 



Premaxillary teeth, 245 



Premolars (Lat. prae. before, and 

 molo to grind) of the carnivora, 

 264; of the hog, 310 



Presphenoid bone (Lat. prae, before, 

 and Gr. sphen and eidos wedge- 

 like), 45 ; of the python's skull, 

 79 



Pretympanic bone (Lat. jora before, 

 and Gr. tympanon a drum), 45 



Primarite, the primary quill-fea- 

 thers of birds, 141 



Prionodon (Gr. prion a saw, and 

 odous a tooth), dentine of the, 

 247 



Pristis (Gr. a sawyer), vasodentine 

 of the, 247 



Processes of the skull, 50 



Procnemial ridge (Gr. pro before, 

 and kneme the knee), 145 



Proooelian (Gr. ^57-05 before, and 

 koilos concave) type of vertebrae, 

 97 



Prosencephalon (Gr. pros before, en 

 in, and kephale the head), 79 



Proteus (Gr. proteus a marine deity), 

 skeleton and limbs of the, 184 



Protopterus (Gr. j^roios the first, 

 and pteryz a wing or fin), 64; 

 skeleton and limbs of the, 183 



Psammodus (Gr. psammos sand, and 

 odous a tooth), vasodentine of the, 

 247 



Pseudopus (Gr. pseudos false, and 

 pons a foot) of the lizard kind, 91 



Pterygoid process (Gr. pieryx and 

 eidos wing-like), 48, 168 ; of the 

 boa-constrictor, 80 



