INDEX. 



Plate. Fig. 



rugosus, Mytilus - - * . -141 



rusticum, Cardium - - - - 124 a 



«triata } Pholas - - • . -117 



subtruncata, Mactra • - » • 226 



terrestris, Trochus - - - - 111 



triplicata, Voluta - « - • 138 



tubiformis, Sabella - - - - *33 



tmdata, Venus . - • . -121 



ungulatus, Mytilus - - - izt 1 



END OF VOL. IV. 



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