77.5 



776 



777 



776> 



7W 



728 



72ft 



727 



I 



/# 



i 



119. P. admtma. 123. P. Ptagnom 



120. Bittiraa tea.taculata.andoperculTim. 124. ; : 



121. Palu.iina..sinu.li3 



I14-. "Valvata piscinalis. 118 . Palu^ina -Tivipaxa. and. operculum. 

 US. V. cristata 

 116. V. c.var. 

 1LV 



126 . VelLetia lacustris . 128.1 s . > 



