804 
BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 
Fig. 261.- — Family Frondiporidae Busk, 1S75. 
A-H. Frondipora verrucosa Lamouroux, 1821. A, B. Two longitudinal thin sections of a 
branch, X 12. C. Transverse section, X 12, through an ovicelled branch showing the position of 
the ovicell between the fascicles. D. Transverse section through a branch, X 25, and cutting a 
fascicle longitudinally. E. Larva of Frondipora showing internal sac (s) . (After Barrois, 18S2.) 
F, G. Ovicelled branches, X 12. H. Transversal section though an ovicell, X 12, showing that 
the isolated tubes form the pillars supporting the upper walls. 
