INDEX. 



Plate. Fig. 



rugosus, Mytilus - - - - - 141 



rusticum, Cardium - "4 * 



striata, Pholas - - - - - 117 



subtruncata, Mactra - - ' - - 126 



terrestris, Trochus - - - -III 



triplicata, Voluta - - - - 138 



tubiformis, Sabella - - - I Si 



undata, Venus • I21 



ungulatus, Mytilui --."■" Ia * * 



END OF VOL. IV. 



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