Canada 
Department of Himes 
Sir JAMES LOUGHEED, Minister; 
CHARLES CAMSELL, Acting Deputy Minister. 
(Beolorgical Suruetj 
WILLIAM McINNES, Director. 
Museum Bulletin No. 31 
GEOLOGICAL SERIES, No. 38 February 17, 1921 
A CONTRIBUTION TO THE DESCRIPTION OF THE 
FAUNA OF THE TRENTON GROUP 
by 
P; E. Raymond 
OTTAWA 
THOMAS MULVEY 
PRINTER TO THE KING’S MOST EXCELLENT MAJESTY 
1921 
No. 1832 
