PLATE XI. 

 Loganograptus, Hall, and Clonograptus, Hall. 



FIGS. 



1 a — -g. — LoganograpfMS Logani, Hall. 



1 a. Large specimen. Figured by Nicholson, Monograph of British 



Graptolites, 1872, p. 109, fig. 52 c. ? Skiddaw Slates. British 



Museum (Natural History), S. Kensington. 

 1 h. Fifteen-stiped form, distorted by cleavage. Barf. Skiddaw Slates. 



Woodwardian Museum. 

 1 c. Ten-stiped form. Randal Crag. Skiddaw Slates. Woodwardian 



Museum. 

 1 d. Twelve-stiped form. Grate Gill, Blencathra. Skiddaw Slates. 



Fitz-Park Museum, Keswick. 

 1 e. Nine-stiped form. Randal Crag. Skiddaw Slates. Woodwardian 



Museum. 

 1 /. Seven-stiped form. Randal Crag. Skiddaw Slates. Woodwardian 



Museum. 



1 g. Eight-stiped form, broader than usual, poorly preserved. Ibid. 



2 a — c. — Glonograptus teneUus (Linnarsson) . 



2 a. Specimen preserved in low relief. Mary Dingle. Shineton Shales. 



H. M. Geological Survey Collection. 

 2 h. Ibid. 



2 c. Fragment of distal stipes. Skiddaw Slates. Fitz-Park Museum, 



Keswick. 



3 a — c. — Glonugraptiis, var. Gallavei, Lapworth, 



3 a. Specimen showing form of thecse. Mary Dingle. Shineton Shales. 



H. M. Geological Survey Collection. 

 3 h. Specimen showing stipes of the sixth order. Ibid. 

 3 c. Fragmentary example. Mary Dingle. Shineton Shales. Callaway's 



Collection. 



