XXI 



Unio 



caeruleus 



calliopsis 



ciconius 



dignatus semiramidis 



mossulensis 



tigridis 



Uuionidae 109, 12L 143, 144, 147, 159, 169 

 Unioninae ... ... 144, 147 



Page. 



121, 160, 161 



... 147 



159, 169 



169, 169 



160, 169 



... 160 



159, 169 



w 



Wailago attu 



353 



fXiphura indica 



Page. 



257 



Zetis 

 Zeus 

 Zonitidae 



.. 234 

 140, 141 

 ... 149 



SQPI— No. 21 DZ8— 13-2-19— 375. 



