30 



BULLETIK 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.—C&t. 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 

 inferiorly by a serrate denticle. Fifteen tentacles. 



Genotype. — Acanthodesia (Flvstra) savarti Savigny-Audouin, 1826. 

 Range. — Lutetian-Recent. 



#1 



Fig. 2.— Genus Acanthodesia Canu and Bassler, 1919. 



Hgs. 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, sho^ving zooecia with spicules. 



Mgs. 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 Le^dnsen, 1909.) 



