EXPLANATION OF PLATE 11. 



Dactyloidites bulbosus. 

 Page 160. 

 Fig. 1. A small specimen, showing the six rays marked by concentric lines 



at their distul extremities. 

 Fig. 2. A larger specimen in wliich the bulbous expansious are distinctly 

 stalked. Roofing slate, Middle Oranville, N. T. 



