CORRIGENDA. 235 



At page 174, line 1, insert " e " between " l " and " m." 



„ „ „ 6, insert " with " after " surface," dele " , " 



after " concentric." 

 „ 27, insert rt n. sp " after " CI." 

 „ „ „ 6 from bottom, for " 4 " read " 14." 



,, „ „ 4 from bottom, " Craspedodiscus" should com- 



mence a fresh paragraph. 

 ,, 175 „ 27, C. Argus should run on with C. hetero- 

 porus; pi. xiii., for " 12d." read (i 13d." 

 In my list of additional species I had inserted Asterolampra 

 Marylandica. This is also in Prof. Cleve's list. In two or 

 three instances " Ch " occurs for " CI." 



F. KlTTON. 



