BIOLOGICAL CLASSIFICATION. 1409 



Subclass HEXACORALLA. 

 Order MADREPORARIA. 



Family EUPSAMMID^E Edwards and Haime. 

 Calostylis Lindstrom. 



Subclass ALCYONARIA (OCTOCORALLA). 



Family HELIOLITID^E Lindstrom. 



Calvinia Savage, Heliolites Dana, Lyellia Edwards and Haime, Plasmopora Edwards 

 and Haime, Protarea Edwards and Haime, Stylaraea Seeback, Thecia Edwards and 

 Haime. 



Suborder TABULATA. 



Family FAVOSITID^: Edwards and Haime. 



Alveolites Lamarck, Calapoecia Billings, Cladopora Hall, Coenites Eichwald, Dictyo- 

 stroma Nicholson, Favosites Lamarck, Michelinia Dekoninck, Palseofavosites 

 Twenhofel, Parallelopora Holtedahl, Platyaxum (Davis) Foerste, Striatopora Hall, 

 Syringolites Hinde. 



Family AULOPORID^E Nicholson. 



Aulopora Goldfuss, Fletcheria Edwards and Haime, Romingeria Nicholson. 

 Family SYRINGOPORID^E Edwards and Haime. 



Cannapora Hall, Ceratopora Grab ail, Diorychopora Davis, Syringopora Goldfuss, Ver- 

 mipora Hall. 



Family HALYSITID^E Edwards and Haime. 



Halysites Fischer, Labyrinthites Lambe. 



Family CIL-ETETID^E Edwards and Haime. 

 Chaetetes Fischer, Dania Edwards and Haime, Tetradium Dana. 



Class HYDROZOA. 

 Order STROMATOPOROIDEA. 



Family ACTINOSTROMID^E Nicholson. 



Actinodictyon Parks, Actinostroma Nicholson and Murie, Clathrodictyon Nicholson 

 and Murie, Stylodictyon Nicholson. 



Family LABECHIID^E Nicholson. 



Aulocerium Parks, Dermatostroma Parks, Labechia Edwards and Haime, Lophio- 

 stroma Nicholson, Rosenella Nicholson, Stromatocerium Hall. 



Family BEATRICEID^J Ulrich. 

 Beatricea Billings, Cryptophragmus Raymond. 



Family STROMATOPORID^B Nicholson. 



Stromatopora Goldfuss, Stromatoporella Nicholson, Syringostroma Nicholson and 

 Murie. 



Family IDIOSTROMID^E Nicholson. 



Hermatostroma Nicholson, Idiostroma Winchell. 



