XIV CONTENTS 



CHAPTER XII 



Page 

 Phylum — Ccelenterata (Hydroids, Corals, Jelly-fishes, Etc.) . . i74 



CHAPTER XIII 



XJnsegmented Worms at least four Phyla, including Flat-worms, Thread- 

 worms,- Rotifers, Polyzoa, Etc.) 191 



CHAPTER XIV 

 Phylum — Echinodermata (Starfish, Sea-urchins, Sand-dollars, Sea-lilies). . 208 



CHAPTER XV 

 Phylum — Annelida (Segmented Worms) . 223 



CHAPTER XVI 

 Phylum — Mollusca. , 240 



CHAPTER XVII 

 Phylum — Arthropoda. .... . . . 266 



CHAPTER XVIII 

 Phylum — Chord ata . . 312 



CHAPTER XIX 



Chordata (Cont.) : Sub-phylum Vertebrata (Fishes, Amphibians, Reptiles, 



Birds, and Mammals) 316 



CHAPTER XX 

 Class — Pisces (Fishes) . ... 359 



CHAPTER XXI 

 Class — Amphibia (Frogs, Toads, Salamanders) 376 



CHAPTER XXII 

 Class — Reftilia (Lizards, Crocodiles, Tortoises, Snakes) . . . . 385 



CHAPTER XXIII 

 Class — Aves (Birds) " . . . . . . 399 



CHAPTER XXIV 



