1408 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Family PLECTOSPONGID^E Rauff. 



Acanthodictya Hinde, Cyathophycus Walcott, Palaeosaccus Hinde, Plectoderma 

 Hinde, Teganium Rauff. 



Family HYALONEMATID^E Schulze. 

 Pyritonema McCoy. 



Family PATTERSONIID/E Rauff. 

 Pattersonia Miller. 



Family BRACHIOSPONGIID^E Marsh. 

 Brachiospongia Marsh. 



POSITION UNCERTAIN. 



Astraeospongia Roemer, Astroconia Sollas, Aulocopina Billings, Camarocladia Ulrich, 

 Cylindrocelia Ulrich, Fungispongia Ringueberg, Graptospongia Ruedemann, 

 Hyalostelia Zittel, Rauffella Ulrich, Rhabdaria Billings, Rhombodictyon Whit- 

 field, Stelliella Hinde, Trichospongia Billings. 



SPONGES? (CALCAREOUS ALG.E?). 



Anomaloides Ulrich, Cerionites Meek and Worthen, Cyclocrinites Eichwald, Ischa- 

 dites Murchison, Lepidolites Ulrich, Leptopoterion Ulrich, Nidulites Salter, 

 Pasceolus Billings, Receptaculites Roemer. 



Phyllum CCELENTERATA. 

 Subphyllum CNIDARIA. 



Class ANTHOZOA. 

 Subclass TETRACORALLA. 



Family CYATHAXONID^} Edwards and Haime. 

 Duncanella Nicholson, Petraia Munster. 



Family PAL^OCYCLID^ Dybowski. 

 Baryphyllum Edwards and Haime, Palaeocyclus Edwards and Haime. 



Family ZAPHRENTID^E Edwards and Haime. 



Amplexus Sowerby, Anisophyllum Edwards and Haime, Aphyllostylus Whiteaves, 

 Ditoecholasma Simpson, Enterolasma Simpson, Helenterophyllum Grabau, Helio- 

 phrentis Grabau, Laccophyllum Simpson, Llndstromia Nicholson and Thompson, 

 Polyorophe Lindstrom, Pycnostylus Whiteaves, Streptelasma Hall, Zaphrentis 

 Rafinesque. 



Family CYATHOPHYLLID^J Edwards and Haime. 



Acervularia Schweigger, Blothrophyllum Billings, Boreaster Lambe, Chonophyllum 

 Edwards and Haime, Clisiophyllum Dana, Columnaria Goldfuss, Cyathophylluni 

 Goldfuss, Cylindrohelium Grabau, Cystiphorolifes Miller, Diphyphyllum Lonsdale, 

 Eridophyllum Edwards and Haime, Hallia Edwards and Haime, Ileliophyllum 

 Hall, Lyopora Nicholson and Etheridge, Lichenaria Winchell and Schuchert, 

 Nyctopora Nicholson, Omphyma Rafinesque, Ptychophyllum Edwards and Haime, 

 Prismatophyllum Simpson, Strombodes Schweigger. 



Family CYSTIPHYLLID^E Edwards and Haime. 



Calceola Lamarck, Cystiphyllum Lonsdale, Cystostylus Whitfield, Goniophyllum 

 Edwards and Haime. 



