Foint Levi Fossils. 



311 



DiKELOCEPHALUS BeLLI. N, S. 



Fig. 7. 



Description, — Head semi-circular, the width apparently twice 

 the length or a little more. Front margin surrounded by a nar- 

 row convex rim, distant about its own width from the front of 

 the glabella. The latter is obtusely oblong, conical rather convex 

 well defined all round by the narrow groove of the dorsal furrows 

 the sides nearly parallel, straight or nearly so, the front rounded. The 

 neck furrow extends entirely across, nearly straight in the middle 

 third and directed obliquely forward at an angle of about 45^ at 

 the outer third on each side. In front of this, two oblique glabel- 

 lar furrows on each side, their inner extremities separated bv 

 about one third the width of the glabella, forming three lobes of 

 nearly equal size. The eyes appear to be situated opposite the 

 second pair of furrows from the front, and to be distant from the 

 glabella about one third the width of the neck segment. 



Length of head of medium size, six lines and a half; length of 

 glabella five lines and a half; width of the same at base four 

 lines; a little narrower towards the front; width of marginal rim 

 half a line ; width of space between the marginal rim and the 

 front of the glabella, half a line. Surface smooth. 



Cheeks, eyes, thorax and pygidium unknown. Dedicated to 

 Mr. Robert Bell, the discoverer of the genus in the Canadian rocks 



Limestone, No. 1. 



DiKELOCEPHALUS MEGALOFS. N. S. 



Fig. 9. 



Fig. 9. 



€^^ 



Fig. 12. 



Fig. 11. Fig. 10. 



Fig. 9. — D. megalops. 

 Fig. 10, — D. cristatus. 



Fig. 11. and 12. — Pygidia common in Limestone No. 1. 

 Description. — Head appearently semicircular ; anterior margin 



