44 BULLETIN" 103, UNITED STATES NATIONAL MUSEUM. 



shrubs and small trees found in the tropics of both hemispheres but 

 chiefly Asiatic. 



Occurrence. — Gatun formation. Gatun Borrow Pits. (Collected 

 by M. I. Goldman.) 



EXPLANATION OF PLATES. 



Plate 12. 



Palmoxylon palmacites (Sprengel) Stenzel. Cucuracba formation. 

 Fig. 1. Showing abundance of fibro vascular bundles and gum cells. X20. 



Plate 13. 



Fig. 1. Ficus culebrensis Berry. Culebra formation. 



2. Ouatteria culebrensis Berry. Culebra formation. 



3. Myristicophyllum panamense Berry. Culebra formation. 



Plate 14. 



Taenioxylon multiradiatum Felix. Culebra formation. 

 Fig. 1. Transverse section. X25. 

 2. Same. X200. 



Plate 15. 



Taenioxylon multiradiatum Felix. Culebra formation. 

 Fig. 1. Radial section. X200. 



2. Tangential section. X200. 



Plate 16. 



Fig. 1. Cassia culebrensis Berry. Culebra formation. 



2. Inga oligocaenica Berry. Culebra formation. 



3. Hieronymia lehmanni Engelhardt (?). Caimito formation. 



Plate 17. 



Fig. 1. Hiraea oligocaenica Berry. Caimito formation. 



2. Banisteria praenuntia Berry. Culebra formation. 



3. Mespilodaphne culebrensis Berry. Culebra formation. 



4. Schmidelia bejucensis Berry. Caimito formation. 



Plate 18. 



Fig. 1. Calyptranthes gatunensis Berry. Gatun formation. 



2. Melastomites miconioides Berry. Culebra formation. 



3. Rondeletia goldmani Berry. Gatun formation. 

 4-8. Diosypros macdonaldi Berry. Eocene (?). 



4. Showing abundance of fruits in tuffs. 

 5, 7, 8. Transverse median sections of fruits. 



6. Longitudinal median section of fruit. 

 9-12. Rubiacites ixoreoides Berry. Gatun formation. 

 9. External appearance. 



10. Median longitudinal section showing unequally developed seeds. 



11. Side view of seeds. 



12. Lignified fragment showing end walls and partition. 



