196 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Fig. 63. — Genus Caulibugula Verrill, 1900. C. caligulala Levinsen, 1909 

 A. A composite colony. B. Zoarial fragment with ovicelled zooecia, X40. 

 C. Ovicelled zooecia from the basal surface, X 40. D, E. Two incipient colonies, 

 X23. F. An incipient colony from the basal surface, X23. G. An old zooecium 

 and the adjacent internode (segment) of the stem, seen half from the basal 

 surface. The calcined lateral border, which is a continuation of the distal wall, 

 is seen. Between the zooecium and the internode, an internode of a new stem is 

 beginning, X40. H. The proximal end of a young colony, X40. I. A part of 

 a young colony, on which an internode of a new stem begins between the proxi- 

 mal zooecium and the adjacent internode, X40. J. A part of a young colony 

 from the basal surface, X40. K. Two stem internodes, X40. L. The adjacent 



