ERRATA. 



PAGE 



61 line 10 for Odotus obliquus rea,d Otodiis obliqiius. 



Retictdipora dichomata read BeticuUpora dichotoma. 

 JIarginula costata read Margimdina costata 

 Fissuridea marylandica read Fissiirldea marlboroensis 

 Marginula costata read Margin idina contata 



U U CC (( u 



therefore read their 

 Cephalopoda read Gastropoda. 



63 



' 14 " 



63 



' 36 " 



63 



' -±3 " 



80 



' 35 " 



81 



' 35 " 



82 



' 14 " 



Plat 



e XX " 



