1^2 



WALCOTT 



the Carboniferous fauna.' On the discovery of Cambrian trilo- 

 bites Dr. Waagen referred the fauna to the Cambrian,- and ten- 

 tatively conchided that the Olenus, Paradoxides and OleneHus 



' Loc. cit., 1885. 



"^ Loc. cit., 1891, p. 94. 



