Serious illness prevented me during past 3^^ 

 years from continuing the present study. It 

 is to my great regret tliat this report on 

 fossils from the Camhrian to Lov/er Carboni- 

 ferous is now published, because there is 

 f-uj7ther material yet to be studied that will 

 , f orm a future publication. The present 

 report was already finished in December, 1^18, 



The accompanying atlas of fossils, hov/ever, 

 comprises not only those from the Cambrian 

 to the Lower Carboniferous which are here 

 described, but also others belonging to the 

 Upper Palaeozoic and He so zoic times. 



March 1^, 1^20. 



H, Yabe. 



