No. 2367. FOSSIL PLANTS FROM COSTA RICA— BERRY. 179 



Additional examination of recent material in the United States 

 National Herbarium since the foregoing was written, suggests the 

 probability that the present form should be referred to the genus 

 Castilloa Cervantes or to an ancestral form. The modern genus con- 

 sists of a small number of species of trees found from Mexico to 

 Panama and in Cuba, in which the juvenile leaves frequently lack 

 the cordate base of the mature leaves, and are extremely close to 

 the present fossil form. 



Uolotype.—C&t. No. 35469, U.S.N.M. 



