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BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Genotype. — Menipea (Cellaria) cirrata Ellis and Solander, 1786. 

 Recent (Southern Hemisphere). 



In the group Emma Busk, 1892 (genotype, Emma crystallina Gray, 

 1843), the segments are short and a scutum is present. 



Genus MAPLESTONIA MacGHIivray, 1884 



The ovicell is endozooecial. The zoarium is articulated. The 

 segments are formed on the same colony of one or two zooecia. The 



Fig. 86. — Genus Menipea Lamouroux, 1812 



A, B. Menipea cirrata Lamouroux, 1816. Anterior and posterior sides (after 

 Busk, 1852). C. Sketch showing that the joint traverses the opesia (dotted 

 lines) of the inner zooecia. (After Harmer, 1923.) D-F. Menipea {Emma) 

 buskii W. Thompson, 1858. D. Sketch X25, showing the articulation. E. 

 Dorsal surface of the same, X25, showing the two small chambers, from which the 

 next zooecium starts. (D, E. After Waters, 1913 and 1896.) F. Sketch show- 

 ing bifurcation. (After Harmer, 1923.) 



new branches issue from the distal or the lateral portion of a zooecium. 



Genotype. — Maplestonia cirrata MacGillivray, 1884. Recent (Aus- 

 tralia). 



This genus may belong to another family. 



Family BICELLARIELLIDAE Levinsen, 1909 



The larva is broader than high Gong). The zooecia are club- 

 shaped, very little calcified, with narrowed gymnocyst. The planes 

 of the opesium and of the frontal are oblique. The ovicell is hyper- 

 stomial and free. The colonies are free, bushy, and provided with 

 radical fibers. 



