Felipe Poey y Aloy. 413 Léon Vaillant. 413 Louis Dollo. 413 Decio Vinciguerra. 413 Bashford Dean. 417 Kakichi Mitsukuri. 417 Carl H. Eigenmann. 417 Franz Hilgendorf. 417 David Starr Jordan. 421 Herbert Edson Copeland. 421 Charles Henry Gilbert. 421 Barton Warren Evermann. 421 Ramsay Heatley Traquair. 425 Arthur Smith Woodward. 425 Karl A. Zittel. 425 Charles R. Eastman. 425 Fragment of Sandstone from Ordovician Deposits. 435 Fossil Fish Remains from Ordovician Rocks. 436 _Dipterus valenciennesi._ 437 _Hoplopteryx lewesiensis._ 438 _Paratrachichthys prosthemius_, Berycoid fish. 439 _Cypsilurus heterurus_, Flying-fish. 440 _Lutianidæ_, Schoolmaster Snapper. 440 _Pleuronichthys decurrens_, Decurrent Flounder. 441 _Cephalaspis lyelli_, Ostracophore. 444 _Dinichthys intermedius_, Arthrodire. 445 _Lamna cornubica_, Mackerel-shark or Salmon-shark. 447 _Raja stellulata_, Star-spined Ray. 448 _Harriotta raleighiana_, Deep-sea Chimæra. 449 _Dipterus valenciennesi_, Extinct Dipnoan. 449 _Holoptychius giganteus_, Extinct Crossopterygian. 451 _Platysomus gibbosus_, Ancient Ganoid fish. 452 _Lepisosteus platystomus_, Short-nosed Gar. 452 _Palæoniscum macropomum_, Primitive Ganoid fish. 453 _Diplomystus humilis_, Fossil Herring. 453 _Holcolepis lewesiensis_. 454 _Elops saurus_, Ten-pounder. 454 _Apogon semilineatus_, Cardinal-fish. 455 _Pomolobus æstivalis_, Summer Herring. 455 _Bassozetus catena._ 456