INDEX 



287 



Porocytes, 70, 73 



Porpoise (Phocaena), 262 



Primates, 264, 272 



Primitive streak, 248, 259 



" Processionary caterpillars," 142 



Proctodaeum, 15 



Proglottis, 90, 96, 97, 98 



Pronephros, 213, 216 



Pronucleus, 11 



Prosopyle, 71 



Protandry, 172, 185 



Proterospongia, 39 



Protogyny, 181 



Protoplasm, 5 



Protopterus, 230 



Prototheria (Monotremes), 261, 266 



Prototracheata, 18, 137 



Proto vertebra. See Myotomes. 



Protozoa, 17, 18 



Classification of ; 20 

 Chief types of, 19, 22 

 Parasitic, 20-23, 25, 28, 38, 

 40-47, 53-67 



Pseudobranch (vestigial gill), 211, 219 



Pseudogastrula, 73 



Pseudonavicellae, 56, 58 



Pseudopodia, 27, 31, 77 



Pteropus (Fruit-eating Bat), 264 



Pulex (Plea of Man), 99, 146 



Pupa, 138, 142 ; of Culex, 143, 147 



Puparium, 142 : of Tsetse-fly, 154 



RABBIT. See Lepus. 



Radiolaria, 20, 34 



Radiolarians and " yellow cells," 17, 35 



Radula, 170 



Raia (Skate), 219, 227 



Eana (Frog), 232 



Rat (Mu*), 264 



Ratitae (Running Birds), 249 



Redia, 94 



Regions, Zoo-geographical, 275 



Relapsing fever, African (Human tick- 

 fever), Cause of, 47 

 fevjr, European, Cause of, 47, 

 146, 147, 155 



Renal-portal System, 210 



Reno-pericardia 1 canal (nephrostome), 

 171, 173 



Reproduction, Asexual and Sexual, 12 

 of Acinetaria, 54 



Reproduction of Actinosphaerium, 31 

 of Amoeba, 28 



of Annelida, 115 



of Arcella, 29 

 of Aurelia (Jelly-fish), 84 

 of Cephalodiscus, 180 

 of Ciliata, 48 

 of Coelenterata, 76 



of Difflugia, 29 

 of Echinodermata, 163 



of Euglena, 37 



of Haemosporidia, 61, 66 



of Heliozoa, 30 

 of Hydra, 80 



of Leishmania, 45 



of Malaria parasites (Plas- 



modium, Laverania), 61, 

 62 



of Monocystis, 58 



of Paramecium, 50, 52 



of Platyhelminthes, 89 

 of Polychaeta, 114, 122 

 of Polystomella, 33 

 of Protozoa, 19 



of Sponges (Porifera), 71 



of Sporozoa(Gregarines),55 



of Tapeworms, 97-1Q2 

 of Ticks, 161 

 of Trypanosomes, 42 

 of Tunicates, 181 

 of Volvox, 38 

 of Vorticella, 52 



Reproductive System of Amphioxus, 189 

 of Ascaris, 104, 105 



of Balanoglossus, 179 



of Craniata (Verte- 



brata), 213 

 of Crayfish (Astacus), 



135 

 of Dogfish (Set/Ilium), 



225 

 of Earthworm (Lum- 



bricus), 118 

 of Frog (Rana), 238 

 of Leech (Hirudo), 124 

 of Liver-fluke (Fasci- 



ola), 93 

 of Lobworm (Arenicola) 



122 



of Mussel (Anodonta), 



173, 175 



