ADDITIONAL ERRATA. 



In Tables II and III, " Colwell Bay" should be tabulated as Upper Eocene. The numerical results 

 given at the foot of Table III will consequently be — 



Upper Eocene | .. j 1 | •• I 3 | 1 , 3 1 '^ I ■ • ] M '2 | 

 Middle Eocene |..1..|..| S \ 21 21 l| 2! 2I17I 



At pages 26, 33, 34, and 39, the Colwell Bay Sands, &c. hnve been wrongly termed Middle Eocene. 

 At page 49, near the bottom of page 50, and at page 51, they are correctly referred to as Upper Eocene. 



Besides the accidental shifting of the letters at the bottom of the ninteenth column in Table II, p. 58, 

 the letters in tliat column opposite to species 18 and 19 have also dropped too low. 



