in.Iyc.NatHisr.Vol.VI. 



Plate I 







Fig. 5, Ti^. 6, 



44 



Iith of Na$e 



NT 



1, Pisidium cictr Prime 



2 , .. cantortum 



4, Cclas 



Say. 



Mel am a fr&cihtr ./[nth. 



A ^, ..... l^oo /fnf-h/ 



