Johnson — The Occurrence of Archceopteris Tschejinaki, Stur. 141 



The accompanying table shows the distribution of the fertile species of 

 ArchcBopteris as recorded :—' 



Distribution of Furtile Species of ARCHiEOPTERis. 



' Steiile state only known. 



^ D. White regards ^rc/ifflOjOi!«n's arelietijpiis, Sohmalh,, and A. ftssilis, Schmalh. as identical with 

 the two American species, A. obtusn, Lesqx., sp., and A. sphenophyllifoliu. This view, if upheld, 

 removes the anomaly of the geographical distribution of Schmalhausen's two species, and indicates 

 their occurrence in N. America. 



SCIENT. PROC. E.D.S., VOL. XIII., NO. IX, 



