Xll 



CONTENTS 



VII 



The Teleostomes {i.e. Ganoids and Teleosts). Typical members; their 



structures and interrelationships; their probable descent .... 139 



VIII 



The Groups of Fishes contrasted from the Standpoint of Embryology. 

 Their eggs and breeding habits. Outlines of the development of 

 Lamprey, Shark, Lung-tish, Ganoid, and Teleost. Their larval 



development 179 



DERIVATION OF NAMES 227 



BIBLIOGRAPHY 231 



EXPLANATORY TABLES: 



I. Classification of P^ishes 8 



II. Distribution of Fishes in Geological Time 9 . 



III. Phylogeny of Sharks, Chimseroids, Dipnoans .... 98 



IV. Phylogeny of Teleostomes 166 



V. Characters of Vertebrae, Fins, Skull (Figs. 310-315) . . 252 



VI. Relations of Jaws and Branchial Arches (Figs. 310-315) . 256 



VII. Heart (Figs. 316-325) 260 



VIII. Gills, Spiracle, Gill rakers (Figs. 9-12, 326-331) . . . 260 



IX. Digestive Tract (Figs. 326-331) 263 



X. Swim-Bladder (Figs. 13-19) 264 



XL Genital System (Figs. 331-337) 266 



XII. Plan of Circulation in Fishes (Fig. 33S) 269 



XIII. Excretory System (Figs. 331-337) 270 



XIV. Abdominal Pores (Figs. 331-337) 271 



XV. Central Nervous System (Figs. 339-344) 274 



XVI. Sense Organs 276 



XVII. Integument, Lateral line 278 



XVIII. Developmental Characters • 280 



XIX. Comparison of Phylogenetic Tables of Authors .... 282 



INDEX 285 



