268 NORTH AMERICAN INDEX FOSSILS. 



Middle Cambric of St. John group (Acadian) of New Bruns- 

 wick. (First or lowest zone.) 



31. P. eteminicus Matthew. (Fig. 1559, t/, ^.) Cambric. 

 Anterior border of cephalon making obtusely pointed angle; 



glabella subtriangular in front. 



Middle Cambric of St. John group (Acadian) of New Bruns- 

 wick. (Second zone.) 



32. P. abenacus Matthew. (Fig. 1560.) Cambric. 



Fig. 1560. Paradoxides abenacus, cephalon of broad form, slightly distorted. 

 (After Matthew.) 



Anterior portion of cephalon straight, without pronounced fold; 

 anterior end of glabella broadly rounded. 



Middle Cambric of St. John group (Acadian) of New Bruns- 

 wick. (Third zone.) 



33. P. davidis Salter. (Figs. 1561, 1562.) Cambric. 

 Eyes well forward. Thorax of 18 segments; pleura in the adult 



ending in long spines. Pygidium with a pair of large, pleura-like 

 spines. 



Middle Cambric of Newfoundland ; also Europe. ( Fourth zone. ) 



34. P. forchhammeri Angelin. (Fig. 1563.) Cambric. 

 Eyes set well back as in P. harlani; sides of anterior half of 



glabella converging at right angles. 



Middle Cambric of St. John group (Lower Johannian) of Cape 

 Breton; also Europe. (Fifth or uppermost Paradoxides zone.) 



XVI. Remopleurides Portlock. 

 Glabella broad, convex, oval. Eyes large, reaching the neck 

 segment. Thoracic segments 11 to 13; axis about as wide as the 



