25-t Scientific Proceedings, Royal Dublin Society. 



Plate XII. 

 Fig. 



1. Slab showing several seed impressions and numerous microsporangia of 



S. devonicus. 



2. A single such seed impression, -f-. 



3. Heteromophic foliage of Kiltorhensia devonica (Ginhgopliyllwm Kiltorhense). 

 4 and 5. Eootstock of Kiltorhensia devonica, from two different aspects. 



Plate XIII. 



1 and 2. Eootstock of Kiltorhensia with Ginkgo-like pinnules, more obvious 

 in fig. 1. 



3 and 4. Botrychium-like branching sporangiferous pinnules assigned to 

 Kiltorhensia. (Similar bodies are to be seen in Plate X, fig. 2, of my 

 paper on Ginhcjopliylhmi. (Sci. Proc. Boy. Dublin Soc, 1914, vol. xiv, 

 No. ix, p. 169.) Attention was not called to them at the time, as 

 there was not enough evidence of affinity.) 



5. Pendulous seed-like body of unknown affinities {Kiltorhensia ?) f. 



Plate XIV. 



1. Stem of Archwopteris, showing adaxial forked appendage. 



2. Another stem of Arclueopteris, showing leaf-bases. 



3. Kiltorhensia devonica (Gingkophyllum hiltorhensc), composite foliage. 



(Drawings by Miss Barnes.) 



