30 BULLETIN 125, UNITED STATES NATIONAL MUSEUM. 
It is also very well characterized by the presence of wider zooecia in the vicinity 
of the zoarial margins. 
Occurrence .—Miocene (Bowden marl): Santo Domingo. 
Cotypes. —Cat. No. 68425, U.S.N.M. 
Genus ACANTHODESIA Canu and Bassler, 1919. 
1919. Acanthodesia Canu and Bassler, Geology and Paleontology of the West Indies, Bryozoa, 
Publications of the Carnegie Institution of Washington, No. 291, p. 79. 
No ovicell. The opesium is garnished laterally by small spinous processes and 
interiorly by a serrate denticle. Fifteen tentacles. 
Genotype.—Acanthodesia ( Flustra ) savarti Savigny-Audouin, 1826. 
Range. —Lutetian-Recent. 
Fig. 2.—Genus Acanthodesia Canu and Bassler, 1919. 
Figs. A-I. Acanthodesia savartii Savigny-Audouin, 1826. A and B. Zoaria of recent specimens 
natural size. C. Young zooecia, X 25. D. Older zooecia, X 25, showing small proximal denticles. 
E. Older zooecia, X 25, with a serrate denticle directed inward toward the basal wall. F, G. Distal 
septular plates, X 250 (A-G, after Waters, 1908). H. Zoarial fragment, X 12 (after Audouin, 1826). 
I. A fossil specimen, X 20, showing zooecia with spicules. 
Figs. J-L. Acanthodesia ( Membranipora ) limosa, Waters, 1908. J. Two zooecia, X 55. K. Distal 
wall, X 55, with the peculiar spine-like processes. L. A spine-like process more highly magnified, 
X 200. (Figs. J-L, after Levinsen, 1909.) 
