Explanations of Platks. 



249 



AGLITIIODICTYA, gen. nov. 



Page 145. 



Aglithodictya ncmulina, sp. nov. 



Page 145. 



Figures 6-8. Lateral, basal and apertural views of the same specimen ; 

 showing the size and peculiar form of the species, the character of 

 the aperture with the surface canals on the oral slope, and the very 

 fine reticulum. 



Figure 9. An enlargement of the surface to show more distinctly the regular 

 reticulations of the skeleton, x 4. 

 Chemung group. Near ColwcUm, Steuben county. New York. 



