those with a more southern distribution. Therefore, it 
was not surprising when the spectra of amber from Girén 
and Medellin, Colombia, compared closely with H. 
Courbaril resin from Guyana and Brazil (Plate XX VII). 
We presently do not have specimens of Hf. Courbaril 
from Colombia. 
These spectra of Colombian amber seem sufficiently 
close to present-day Hymenaea to indicate its possible 
botanic origin. Unfortunately, we do not know the geo- 
logic age nor have corroborative evidence for the botanic 
source from plants included in the amber or in the amber- 
bearing beds, such as was available for the amber from 
Chiapas, Mexico. 
[ 100 | 
