136 Clark — New Genera of Unstalked Qrinoids. 



Family THALASSOMETRIDjE. 



Paecilometra. Thalassometra. 



Charitometra. 



Family ANTEDONIDjE (restricted). 



Pi rometra. Leptometra. 



Eryihromelra . Hathrometra. 



Zenorrwtra. Iridorru tra. 



Psathyroim tra. Trichometra. 



Adeloinetra. Bathymetra. 



Heliometra. Nanometra. 



Promachocrinus. Compsometra. 



Thaumatometra. Hypalometra. 



Thysanometra. Isometra. 



Coccometra. Antedon. 



Family PENTAMETR< >CRINID^E. 



Decametrocrinus. Pentametrocrinus. 



Thaamatocrinus. 



