ERRATA. 
On Plate VI., for ASTHUSA PUBESCENS read A®THUSA LATA. 
On Plate VII., for RHINOLITHODES CRISTATIPES read GLYPTOLITHODES CRISTATIPES. 
On Plate VII., for ECHINOCERUS DIOMEDE read PARALOMIS DIOMEDE. 
On Plate VIII, for PARALOMIS ASPERA read LEPTOLITHODES ASPER. 
On Plate IX., for PARALOMIS LONGIPES read IEPTOLITHODES LONGIPES. 
