158 TABULATE CORALS. 



added that the reference of the genus by Mihie-Edwards and 

 Haime to the HalysitidcB, in the vicinity of Syringopora, is based 

 upon a soHd foundation of structural hkeness, since the connect- 

 ing-floors of Chojiostegites are the homologues of the hollow 

 connecting-tubes in Syringopora, and the genus thus forms a 

 true link between Micheliiiia and Syringopora. 



Formation and Locality. — Not uncommon in the Corniferous 

 Limestone of Walpole, Ontario. 



