198 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



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Fig. 66. — Genus Dendrobeania Levinsen, 1909 



A-I. Dendrobeania murrayana Johnston, 1838. A. Zoarium, natural size. 

 B. Zooecia of the normal form, X31. C. Dorsal (basal) surface, X31. The 

 radical threads are issued from the second (more seldom also from the first) 

 septula of the marginal zooecia (after Hincks, 1880). D-G. Freely movable 

 avicularia showing the difference in size between those on the front and margin 

 of the cells, X50. H. Mandible of the avicularium, X85. (After Waters, 

 1887.) I. Dorsal surface of the uniserial zoarium (forma frigida Waters, 1900) 

 showing the distal multiporous septula, through the transparent wall, and the 

 two multiporous septula placed close together in the distal part of each lateral 

 wall, X25. (After Waters, 1900.). 



Fig. 67. — Genus Euoplozoum Harmer, 1923 



A-D. Euoplozoum cirralum Busk, 1884. A. A tuft, natural size. B. View of 

 the frontal of a fragment. C. An ovicelled fragment (after Busk, 1884). D. 

 Sketch showing arrangement of cells at the bifurcations (after Harmer, 1923). 



