DISTRIBUTION. 



203 





Calciferous 



Sandstone 



Series. 



Carboniferous Limestone. 



1 

 11 



■all 

 6a« 



Lower 

 1 



Upper. 

 2 



a 



h3h3 m 

 3 



L 

 •1 



4 



o '^ 

 5 



to 

 | _ 



1,1.8 



6 



7 



8 



















X 

 X 



X 



X 

 X 



X 

 X 

 X 

 X 

 X 





> 



<"? 





X 

 X 



> 



> 

 > 



< 

 < 



















„ modiolaris, Sow. , sp 



,, Williamsoni, Brown, sp 



Wardi, Eth 

















„ Phillvpsii, Williamson, sp. . . . 



,, lievis, var. scotica, Eth 



,, subparallela, Portl., sp 



















X 

 X 









) 

 ) 



< 

 < 

















X 

 X 



X 





X 

 X 

























„ Kirkmani, Brown, sp 

























