328 Proceedings of the Royal Irish Academy. 



EXPLAly^ATIOX OE PLATES YIII. axd IX. 



Plate Till. 



Radula Carringtoni, Jack. 

 Fig. 



1. Plant, natural size. 



2. Portion of plant bearing amentae. x 8. 



3. Portion of plant bearing perianths, x 8, 



4. One of the amentse, shoTving the antheridia in the saccate base 



of the altered leaves, x 20. 



5. Involucral leaves with oval rotimdate lobules. Perianth, calyptra 



and capsule, x 20. 



6. Leaf, x 30. 



7. Leaf showing lobule, which is half or more the breadth of the 



superior lobe with which it forms a sharp angle, and upon 

 which it lies flat, x 30. 



8. Portion of a leaf showing cells, x 250, 



Plate IX. 



Radula Soltii, Spruce. 



Fig. 



1. Plant, natural size. 



2. The same (x 20), showing the inversely cone-shaped or trumpet- 



shaped perianth, branching and leaves with rounded decur- 

 rent lobules, |th the size of the lobe which is sharply divergent 

 from the fold of the lobule (the latter character is unique 

 among European species of Eadula). 



