6 TABULATE CQRALS. 



special group of uncertain zoological position ; Columnaria, 

 Goldf., is placed among the Cyathophyllidcs, in the section of 

 the Rugosa; Fletchcria, E. and H., and Michelinia, De Kon., 

 are referred to the Cystiphyllidce ; and Syrmgopoi^a, Goldf, is 

 regarded as a Rugose Coral, allied to Lithosti'otion or Diphy- 

 phylbun. I shall have occasion to notice many of the views 

 expressed by Dr Lindstrom in greater detail in dealing with 

 the families and genera of the Palaeozoic Tabulate Corals ; and 

 the general results of his investigations will be best understood 

 if I append here the following list, in which the various genera 

 of the " Tabiilata" of Edwards and Haime are referred to what 

 Dr Lindstrom considers to be their true place in the zoological 

 system : — 



Name of Genus. 

 J\IiI/('pora, 

 Hcliopora, 

 Polytremacis, 

 Heliolites, . 



FistuUpora, 



Plasinopora, 



Propora, . 



Lyellia, 



Axopora, . 



Battersbyia^ 



Fm'osites 



Emtnonsia 



Mkhelinia, 



Alveolites, 



Rccineria 



Koninckia 



C/iccteles 



Alonticiilipora 



Dania 



Stellipora 



Dekayia, . 



Beaumoniia, 



Labeehia, . 



Stylophyllum, 



Halysites, . 



Syriiigopora, 



To be removed to 



Hydrozoa '? 



Alcyomiria (Moseley). 



Aleyonaria. 



HelioUtida (special family). 

 / Some species to Hdiolites ; others 

 I to the Polyzoa. 



HelioUtidce. 

 f ffeliolitidce (probably inseparable 

 I from Plasmopora). 



HelioUtideB. 



Hydrozoa I 



AstrcBides (Duncan). 

 J Sub-family Favositiiiee of the Pori- 

 \ (idee. 



Cystiphyllidce. 



Partly Favositiiiee, partly Polyzoa. 



Favosiiinec. 



Polyzoa. 



Polyzoa I 



Favositiiiee. 



Hydrozoa. 



Hydrozoa 1 



Heliolitidee. 

 / Vicinity of Lithostrotion and Diphy- 

 \ pJiylliun. 



