88 COELENTERATA—ANTHOZOA SUB-BRANCH II 
Wall costate, without epitheca; columella absent. Trias, Jurassic, and Ter- 
tiary. Especially common in Alpine Trias. C. clathrata, Emmrich sp. 
Thecosmilia, BK. and H. (Fig. 149). Colony bushy, calices dividing by fission, 
and more or less free. Epitheca corrugated, readily wearing away ; columella 
absent or rudimentary. ‘Trias to Tertiary. According to Frech identical with 
Calamophyllia. Very common in Triassic and Jurassic. 
Baryphyllia, From. Hymenophyllia, E. and H., etc. Cretaceous. 
6. Coralla with confluent calices increasing by fission. 
Leptoria, BE. and H. (Fig. 150). Corallum massive, composed of labyrinthic 
rows of confluent corallites with fused walls. Septa closely crowded, approach- 
ing parallelism ; columella foliaceous. 
Jurassic to Tertiary. 
Diploria, KE. and H. Like the 
preceding, but with corallites united 
by produced costal septa instead of 
directly by their walls. Cretaceous 
to Recent. 
Aspidiscus, Konig. (Fig. 151). 
Ne Corallum discoidal, circular, or 
Fras as0. bare ae elliptical, covered on lower side 
Aspidiscus cristatus, : : : ie 
Leptoria Konincki, Reuss. __ Konig. Middle Creta) With wrinkled epitheca. Calicinal 
Nenad cous Gosan Walley. -ceons ; Batne, Algeria: furrows radiating. fpomeuNe iam 
outwards, and separated from one 
another by sharply crested ridges. In the centrifugally disposed corallites the 
outermost septa are thickened, and form by their union a banded margin. 
Cretaceous. 
Stiboria, Etall. Jurassic. Stelloria, d’Orb. Cretaceous. Maeandrina, Lam. 
Cretaceous to Recent. Symphyllia, E. and H. Tertiary and Recent. 

Sub-Family B. Evsminiryar. Milne-Edwards and Haime. 
Upper septal edges entire, not serrated. 
a. Simple coralla. 
Trochosnulia, E. and H. (Fig. 152). Turbinate, base acutely pointed or 

Fig. 153. 
Fic. 152. Coelosmilia laxa, 
E. and H. White Placosmilia cuneiformis, E. 
Trochosmilia granifera, Raime. Turonian; Bains-de- Chalk; Liineburg, and H. Upper Cretaceous ; 
Rennes, France. a, Profile; b, Calice slightly enlarged Hanover. Natural St. Gilgen on Wolfgangsee, 
(after Fromentel). size. Austria. Natural size. 
encrusting. Septa numerous, extending to the centre. Wall without epitheca, 
