INDEX 581 



PAGE 



Zacanthoides charilla Walcott, described 40 



figured, pi. 6, figs. 9, ga 57 



? cimon Walcott, described 41 



figured, pi. 7, figs. 6, 6a 59 



cnopus Walcott, described 43 



figured, pi. 6, figs. 10, 100 57 



Zittel, Karl 176, 265, 324, 326 



Zittel-Eastman Text-Book of Paleontology 169 



