334 PALEOZOIC TIME. 



foot long, apart from its tail spine) is common on the Atlantic coast 



Figs. 663-667. 



Crustaceans. — Fig. 663, Acanthotelson Stimpsoni ; 664, Palseocaris typus (x3); 665, Anthra- 

 palsemon gracilis. Myriapods : 666, Xylobius sigillariae ; 667, Euphoberia armigera. 



Figs. 668, 668 A 





Fig. 668, Eoscorpius carbonarius ; 668 A, Arthrolycosa antiquus. 



of North America, south of Cape Cod. The specimen here figured is 



