Corallum entirely covered by the polyp. (Subfamily 

 Turboliniidae) (43) 



(34) Pali or paliform lobes present (35) 



Pali absent (40) 



(35) Pali in one crown before third cycle (36) 



Paliform lobes, irregular, before third cycle [BathycjathusJ 



Pali in two crowns before all but last cycle (37) 



Pali in several crowns, indistinct, before all but last cycle, 



solitary, turbinate to trochoid [Paracyathus') 



(36) Solitary (CarjophyUia) 



Colonial, small phaceloid colony (Coenocyathus) 



(37) Pali simple (38) 



Pali of one crown unite in deltas. Corallum discoidal 



CDeUocyathus) 



(38) Corallum turbinate to ceratoid (39) 



Corallum globular or bottle shaped (Peponocyathus) 



(39) Epitheca absent [7rochocyathus') 



Epitheca present (7ethocyathus) 



(40) Columella absent (41) 



Columella fascicular (42) 



Columella axially elongate with secondary thickened 



lammellar elements [Oxysmilia) 



(41) Patellate [Stephanocyathus) 



Turbinate (Vaughanelia) 



(42) Columella crispate at surface [Cyathoceras) 



Columella papillose (Ceratotrochus) 



(43) Columella parietal, pali present (Varadeltocyathus) 



Columella styliform, corallum trochoid ...—[7urhinoUd) 



Columella lamellar appearance (Sphenotrochus) 



44 Endotheca sparse and deep (Subfamily Desmophylliidea) (45) 



Endotheca well developed 46 



(45) Solitary ['DesmophyUum') 



Dendroid (Cophelia) 



46 Mostly solitary. Colonies dendroid. Extratentacular bud- 

 ding (Subfamily Parasmiliinae) (47) 



Colonial. Phaceloid. Intratentacular budding (Subfamily 

 Eusmilliinae Susmilia 



(47) Paliform lobes absent (48) 



Paliform lobes present (51) 



(48) Columella feeble or absent (49) 



Columella spongy (ParasmiUa) 



i07 



