606 Report of the State Geologist. 



allel longitudinal rows, which are separated by ridges as in Siic- 

 TOPORA ; margin of frond noncelluiiferous, striated. 



FisiuLiPORiDRA, nov. gen. 

 Type, Fistuliporidra tesselata, Hall (sp.). 



(Plate 22, figs. 1-3.) 



The manner of growth and internal structure is the same as in 



FisTULTPORiNA, but the cell apertures are surrounded by angular 



elevations, enclosing the apertures in a polygonal vestibular area, 



the surface presenting a very different appearance from that of 



FiSTTJLIPOBINA. 



FiSTULTCELLA, UOV. gCU. 



Type, Fistulicella plana^ Hall (sp.). 



(Plate 22, fig. 4.) 



The manner of growth and general appearance is the same as 

 that of Lie HEN ALT A, but the cells are circular and without pseudo 

 septa or lunaria. 



