PLATE T. '<\X1I. 



1 to i. Rissoa parva. 

 5 to 9 . R. iuconspicua 



&.£. Scnvgr3y, J^UTzT 



JioTid^uTu^lcshed hyJoh^v 'Fori' VdoTsclSf^. 



