332 Annals of the Carnegie Museum. 



Explanation of Plate XV. 



Fig. I. Protophyllum viburnifolium Gress, sp. nov. Leaf, slightly reduced 

 below natural size. 



Fig. 2. The same specimen with the venation and margin of the leaf inked 

 in, where discernible. Slightly reduced from natural size. 



Fig. 3. Platanus cissitifolia Gress, sp. nov. Leaf, slightly reduced below 

 natural size. 



Fig. 4. The same specimen, with the venation and margin of the leaf inked 

 in where discernible. Slightly reduced from natural size. (The specimens 

 are in the Carnegie Museum.) 



