INDEX 



323 



precoracoid, 203 



premandibular cavity, see head cavity 



premaxilla, 201, 265 



preoral cavity, 138, 149 



pit, 135, 138, 149 

 preputial pouch, 256, 309 

 presphenoid, 263 

 presternum, 260 



primary body cavity, 59, 128 

 primitive groove, 237, 250 



streak, 169, 193, 227, 237, 245, 

 249 



prismatic layer, shell, 63 

 procoelus vertebra, 198 

 proctodeum, 73, 103, 118, 119, 163, 



205, 245, 251 

 Proctoporida, 130 

 proglottis, 54 



pronephros, 186, 221, 246, 305 

 pronotum, 116 

 prootic, 200 

 propterygium, 163 

 prosencephalon, 174, 215, 292 

 prostate gland, 309 

 prostomium, 77 

 protection, 311 

 Protista, 2 

 protonephridium, 47, 49, 52, 58, 59, 



74, 87, 90, 128, 141, 152 

 Protophyta, 1, 20 

 protopodite, 94 

 Prototracheata, 91 

 Protozoa, 1 

 Protozoea larva, 110 

 Protozoology, 29 

 proventriculus, 118 

 pseudopodium, 3, 4, 5 

 psychology, 17, 21, 36, 72, 121, 294 

 Pterobranchia, 130 

 pterygoid, 202, 265 

 pubic process, 163 

 pubis, 204, 269 

 pulmo-cutaneous artery, 210 

 pulmonary artery, 210, 286 

 pupa, 113, 126 

 pylorus, 165, 206, 276 



quadrate, 161, 199 

 quadrate- jugal, 201 



rabbit, 255 

 radiale, 204, 268 

 radius, 204, 268 

 Raia, 153 

 Rana, 195 

 ray, 154, 156 

 rectal gland, 165 



redia, 49 



regeneration, 36 



renal artery, 172, 211, 288 



vein, 172, 212, 289 



portal vein, 172, 213 

 reproduction, see cell, also develop- 

 ment 



reproductive organs, Hydra, 36 



Obelia, 42 



Distoma, 48 



Taenia, 55 



Anodonta, 71 



Lumbricus, 84 



Nephrops, 108 



Blatta, 122 



Amphioxus, 142 



Raia, 189 



Rana, 224 



Lepus, 308 



reproductive zooid, 42 

 respiratory organs, Protozoa, 20- 



MoUusca, 65 



Lumbricus, 83 



Nephrops, 98 



Blatta, 119 



Amphioxus, 137 



Raia, 166 



Rana, 207 



Lepus, 279 



respiratory pigment, 68, 82, 166- 



Rhizopoda, 1, 9 



rhombencephalon, 175 



ribs, 159, 198, 259 



rostellum, 52 



Rotifera, 58, 60, 75, 128 



sacculus, see auditory organ 

 sacculus rotundus, 278 

 sacral vertebrae, 198, 257, 258 

 sacrum, 198, 258 

 saddle (earthworm), 77 

 salivary gland, 118, 126, 274 

 Sarcodina, 1 

 scala media, 302 



tympani, 302 



vestibuli, 302 

 scale, 157 



scaphognathite, 96, 99 

 scaphoid, 268 

 Scaphopoda, 61 

 scapula, 163, 203, 267 

 schizocoel, 59 

 schizogony, 26, 29 

 sclerite, 116 

 sclerotic, see eye 

 sclerotome, 148, 208, 246, 257 

 scolex, 52, 56 



scrotum, 256, 307, 308 



