FAMILIES AlfD GENERA OE THE MADEEPORARIA. 



9 



Section MADREPOEAEIA APOROSA, Ed. ^ H. 



I. Family TURBINOLID^ ^, MM. Mihe-Edwards # Jules Haime, 

 Hist. Nat. des Corall. vol. ii. 1848, amended. 



Corallum simple or in colonies, in the first instance repro- 

 ducing by ova and in the second by gemmation from the wall or 

 from an expansion of the basal structures. Wall solid. Septal 

 loculi open to the base. Endotheca very rarely present. 



I. Subfamily Ti^rbinolidce simplices. 



Corallum simple, reproducing by ova, rarely by de- 

 ciduous buds. 

 II. Subfamily TurhinoUdcs gemmantes. 



Colony increasing by gemmation ; buds free above 

 their origin ; no exotheca uniting the corallites. 

 III. Subfamily Turhinolidce reptantes. 



Colony growing from basal expansions or stoloniferous 

 growths ; exotheca absent. 



The following are the alliances of the family Tnrbinolidse : — 

 Alliances : — Smilotrochoida, Flabelloida, Placotrochoida, Turbinoloidaj 

 Trochocyathoida, Discocyathoida, Haplophylloida. 

 The genus Dasmia stands alone. 



Subfam. Turbinolidcd simplices. 



I. Alliance SMILOTROCHOIDA. 



Simple Turbinolidse with a wall, costse, and septa^ rarely with pali. 

 Columella absent. Epitheca present or absent. 



Genus Smilotrochus, Ed. & H. 



Subgenus Blagrovia, Duncan. 

 Genus Onchotrochus, Duncan. 

 Genus Desmophyllum, Ehr. 



Subgenus Javania, Duncan. 

 Genus Schizocyathus, Pourtales. 

 Genus absorbed : — 



Microtrochus, T. Woods. 

 Genera becoming subgenera : — 



Blagrovia, Duncan; Javania, Duncan. 



* This family was divided into two subfamilies by Milne-Edwards and Jules 

 Haime on account of the presumed morphological value of pali or paluli. The 

 presence of pali having been shown not to be of primary importance (for they 



