Description of Plate V. 
Work of woodpeckers in beeholes. 
Figs. 1, 3, 4, 5. Longitudinal sections through holes made by woodpeckers into the 
galleries of Duomitus ceramicus, and subsequently overgrown. 
Fig. 2. Surface appearance of woodpecker holes a few months after excavation, 
before formation of callus ingrowth. 
Fig. 5. is probably the work of the great slaty woodpecker, Hemilophus pulveru¬ 
lent us ; the remaining holes are those of Chrysocoluptes and allied genera. 
(About one half natural size, vide scales in inches and centimeters). 
