356 PROCEEDINGS OF THE 



Explanation of Plate II. 



(Figures drawn with Camera lucida). 



Figs. 1, 2, 3, 5, 6. — Synocladia ( ? J Scotica n. sp. 



Fig. la. — Natural size of small frond. 



Fig. lb. — Portion of la enlarged to show fenestration. 



Figs. 2, 3, show small secondary pores on celluliferous face. 



Figs. 5, 6, show the longitudinal striation of non-ceUuliferous surface. 



Figs. 4, 7, 8, 9, 10. — Glauconome robusta, n. sp. 



Fig. 4. — Worn specimen showing celluliferous face. 



Fig. 7 shows granulation of surface of celluliferous face, and position of 

 tubercles on keel. 



Pig, 8. — Well preserved specimen, showing prominent tubercles on keel, 

 cells of main stem, and secondary branchlets. 



Fig. 9. — Mesial-vertical section, polished to show the internal form and 

 arrangement of the cells (placed upside down on the Plate). 



Fig. 10. — Showing tubercles — granulate ornament of non-ceUuliferous face. 



^^ote. — AU the figures are much enlarged, with the exception of Fig. 1, 



which is drawn natural size. 



