PLATE XI. 



Fig. 5. Sphenopteris flcibellata, Baily, the type specimen (t. 3964) from the Red 

 Saxadstones of Fair Head. Two pimiee are seen ; that on the left with 

 divided pinnules ; that on tlie right with simple pinnules. 



Fig. 6. Sphenopteris fiahellata, Baily, a photograph of a pinna bearing four 

 pinnules, three of which are divided, enlarged to show the nervation. 

 (No. t. 3964 on back of type specimen), x 2. 



Fig. 7. Sphenopteris fiahellata, Baily, an example with divided pinnules 

 (t. 3962) from the Red Sandstones of Fair Head. 



Fig. 8. Adiantites antiquus (Ett.), portion of a frond from the Red Sandstones 

 of Fair Head. The original of Baily's (1888) fig. 9b. 



Fig. 9. Adiantites antiquus (Ett.), part of a frond enlarged to show the form 

 of the pinnules and the nervation (t. 8974). From the Red Sandstones 

 of Fair Head, x 2. 



Fig. 10. Lepidodendron Veltheimi, Sternb., a decorticated branch from a loose 

 block of sandstone on the shore, more than a quarter of a mile east of 

 Carrickmore Dyke. 



