298 



PALEOZOIC TIME. 

 Fijjs. 573-585. 



Echinoderms. — Fig 573, Poteriocrinus Missouriensis ; 574, Actinocrinus proboscidialis ; 575, Do- 

 rycrinus unicornis; 576, Zeacrinus elegans ; 577, Batocrinus Christyi ; 578, Platycrinus Saffordi; 

 579, the proboscis of Batocrinus longirostris ; 580, Pentremites pyriformis ; 581, 582, P. Godonii 

 (florealis); 583, Archaeocidaris Wortheni; 584, 584 a, A. Shumardana ; 585, A. Norwoodi. 



Figs. 586-587. 



Echinoids. — Fig. 586, Oligoporus nobilis (x %)\ 587, Melonites multipora, view of top (X 2). 



