480 



Canton 



Canton Blumen 

 River Erde 



Gallionella sulcata ? 

 'f Gloeonema? sinense 

 Gomphonema gracile 



longiceps 

 truncatum. 

 Turris ? 

 Himantidiiim Arcus 

 Nai'icula affinis 



amphisbaena 

 Bacillum 



* cantonensis 

 dicepltala 

 mesotyla 

 Scalprum 

 Semen 

 Sigma 



sima (S. roman. ?) 



* sinensis 

 Pinmilaiia aequalis 



dicephala 



Gastrum 



gibba ? 



inaequalis 



lanceolata 



macilenta 



viridis 

 Rhaphonei's lanceolata ? 

 Staurone't's gracilis 



phyllodes 



* Stauroptera graniilata 

 Surirella bifrons 



* ? elliptica 



sigmoides 

 splendida ? 



A. 



