ERRATA. 



Coxinodixus read Coscinodiscus. 



Mastogloia read maxima. 



Naricula read Navicula. 



Plagiegramena read Plagiogramma. 



Van Heuxtkia read Van heurckia. 



Omit Xanthiopyxis umbonatus. 



*The numbers in the following list refer to Van Heurck's 

 Treatise on the Diatomacese, 1896 edition. 



