22 PROCEEDINGS OF THE NATIONAL. MUSEUM vol.69 



Family CATENARIIDAE D'Orbigny, 1851 



Catenaria D'Orbigny, 1851 {Savignyella Levinsen, 1909) ; Holy sis 

 Norman, 1909; Husoleya Dyster, 1858. 



Family SCLERODOMIDAE Levinsen, 1909 



SclerodomiLS Levinsen, 1909; Systenopora Waters, 1904; Gellari- 

 nella Waters, 1904 ; ? Semihaswellia Canu and Bassler, 1917 ; ? Tes- 

 saradotna Norman, 1868. 



Family ONCHOPORIDAE Levinsen, 1909 



Onchoj)ora Busk, 1855; Galwellia W. Thompson, 1858; Onclio- 

 porella Busk, 1884; Onchoporoides Ortmann, 1890; Ichthyaria 

 Busk, 1884. 



Family EUTHYRIDAE Levinsen, 1909 



Euthyris Hincks, 1882 ; Pleurotoichus Levinsen, 1909 ; Urceolipora 

 MacGillivray, 1880 {C alymmophora Busk, 1884) ; Neoeuthyris 

 Bretnall, 1921. 



The following: families are placed at the end of this division 

 because they are either of doubtful value or are incompletely studied. 



Bifaxariidae Busk, 1884 with 5^/<2«ar^<2 Busk, 1884; Bitectiporidae 

 MacGillivray, 1895, with Bitectipora MacGillivray, 1895; Lekytho- 

 glenidae Marsson, 1887, Lekythoglena Marsson, 1887 ; Nephroporidae 

 Marsson, 1887, Nephropora Marsson, 1887; Platyglenidae Marsson, 

 1887, Platyglena Marsson, 1887; and Prostomariidae MacGillivray, 

 1895 with Prostoiixaricb MacGillivray, 1895. 



Suborder Hexapogona, new suborder 



Family CHAPERIIDAE Jullien, 1888 



Chaperia Jullien, 1881. 



Family MAMILLOPORIDAE, new family 



Mammllopora Smitt, 1873; Fedora Jullien, 1882; Anoteropora, 

 new genus; Kionidella Koschinsky, 1885; Disco-fiustrellaria D'Or- 

 bigny, 1853; Praftia D'Archiac, 1847; Stenosipora^ new genus; 

 Ascosia Jullien, 1882. 



Family ORBITULIPORIDAE Canu and Bassler, 1923 



Orbitulipora Stoliczka, 1861 ; Batopora Reuss, 1867 ; Stichoporina 

 Stoliczka, 1861 ; Sphxierophora Haswell, 1881 ; Schizorthosecos Canu 

 and Bassler, 1917 ; ? Bicupularia Reuss, 1864. 



