PLATES IN VOL. XVIIL 



Plate L~> 



II. )>Generic Types of Pal?eozoic Corals. 



mJ 



IV. Carboniferous Lamellibranchiata. 

 V. PaliJeozoic Corals of the State of Ohio. 



■ I Nudibranchiate Mollusca. 

 VII. I 



IX. I 

 Y SAnthracosaurus RusseUi. 



xlJ 

 xn.i 



XIII. I 



XIV. i^-Deep-sea Sponges from tho Atlantic. 

 XV. I 



XVl.J 

 X\T;I. Peripatus novfe-zealandiae. 

 XVIII. Russian Fusulinse. 



XIX I 



■ > Amphipodous Crustaceans. 

 XA. I 



