6 PEOF. P. MARTIN DUNCAN's EEVISION OP THE 



the Aporosa, in consequence of Moseley's discoveries of their 

 remarkable mesenteries. E-esearch has shown that many Madre- 

 poraria Aporosa and Perforata have tabulae, with or without 

 ordinary dissepiments, for instance species of LoplioTielia, Oyatho- 

 pTiora, Astrceopora, Favositipora, Alveopora, and Madrepora. 



With regard to the section Madreporaria Kugosa, it is necessary 

 to eliminate certain genera of deep-sea corals, and some genera 

 from the Secondary rocks, and to place them in the Aporosa and 

 Perforata. 



After considering the relations of the Madreporaria Aporosa, 

 Madreporaria Perforata, and the old family of the Pungidse, I 

 have no hesitation in classifying the Sclerodermic Zoautharia as 

 follows : — 



Section I. MADEEPOEAEIA APOEOSA. 

 II. MADEEPOEAEIA PFNaiDA. 



III. MADEEPOEAEIA PEEFOEATA. 



IV. MADEEPOEAEIA EUGOSA *. 



The Great Divisions of the Sclerodermic Zoantharia or 

 Madreporaria. 



Class ANTHOZOA. Suborder Zoantharia Sclerodeemata 

 or Madreporaria. 



Sections : — Madreporaria Aporosa, Fungida, Perforata. 



Section MADREPORARIA APOROSA. 

 I. Family Turbinolid^ (pars), Ed. & H. 



II. „ OcuLiNiD^ (pars), Ed. & H. 



III. „ POCILLOPORID^. 



IV. „ AsTR^iD^, Ed. & H., amended. 



Section MADREPORARIA FUNGIDA. 

 I. Family Plesiofungid^. 

 II. „ Fungida, Dana (pars). 



III. „ LOPHOSERID^. 



IV. „ Anabaciad^. 



V. „ Plesioporitid^. 



Section MADREPORARIA PERFORATA. 

 I. Family Eupsammid^. 

 II. „ Madreporid^, Ed. & H. 

 III. „ PORITID^, Ed. & H. 



* This section is not considered, and probably most of its genera are no* 

 Madreporarian. 



