IX] 



EQUISETITES. 



265 



The portion of a leaf-sheath and a diaphragm represented in 

 fig. 57, 5, agrees closely with Zeiller's examples. This specimen 

 is from the English Coal-Measures, but it is not advisable to 



Fig. 58. A. Equisetites spatulatus, Zeill. Leaf-sheath. * nat. size. (After 

 ZeiUer.) 

 B. E. columnaris, Brongn. Prom a specimen in the British Museum. 



f nat. size. 

 0. Equisetum ramosissimum, Desf. x 2. 



D. Annulana stellata (Schloth.). Leaf-sheath. Slightly enlarged. 



(After Potonie.) 



E. Equisetites zeaeformis (Schloth.). Leaf-sheath. * nat. size. 



(After Potonie.) 



F. E. lateralis, PhUl. From a specimen in the Scarborough Museum. 



Nat. size. 



