554 



BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 



A. Meniscopora 



B. Bracebndgia 



C. Schizostoma 



K , 



".. :i; .7- w -.1- ^* B 4 



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 '.',,.$3j 



G. Adeonellopsis H. Dimorphocella I. Tremadeona 



FIG. 164. Genera of family Adeonidae Jullien, 3903. 



A. Meniscopora bigibbera Gregory, 1893, X 55. 



B. Bracebridgia aculeata, new species, X 20. Middle Jacksonian of Georgia. 



C. Schizostoma crassa Canu, 1902, X 20. Lutetian of France. 



D. Smittistoma mortisaga Stoliczka, X 20. Lutetian of France. 



E. Adeonella. follKitlata Canu and Bassler, 1917, X 20, Middle Jacksonian of North 

 Carolina. 



F. Adeona violacea Johnston, X 40. Recent. 



G. Adeonellopsis foliacea MacGillivray, 1895, X 40. Recent. 



H. Dimorphocella triton MacGillivray, 1895. Miocene of Australia. (Ordinary zooecia with- 

 out ascopore and gonoecia with ascopore.) 



I. Laminopora contort a Miclielin, 1842, X 25. Recent. (Tremadeona in error.) 



