FAMILIES AND GENEBA OF THE MADEEPOEAEIA. 



57 



exsert. Costse close and siibequal. Endotheca moderately 

 abundant. Epitheca complete, with accretion-ridges hiding the 

 costae. 



Gemmation from the everted margin of the calice at certain 

 epochs of growth. Buds become detached and leave a scar. 

 Distribution. — Fossil. Oolite : Europe. 



Tribe II. 



Genus Sphenophyllia, 3Ioseley^ Report on Corals ' Challenger ' 

 Expedition, 1879, p. 182, pi. x. fig. 1. 



Corallum solitary, free, pedicellate, compressed, with se23ta 

 finely denticulate at the summits, and numerous wedge-shaped 

 costsD, which are denticulate, rendering the corallum exceedingly 

 rough. A scanty epitheca at the base ; no endotheca or exotheca. 

 A well-developed lamellar columella. 



Distrilution. — Recent. Locality unknown. 



Moseley places this form amongst the Astrseidse of Dana, in 

 spite of his not observing endotheca. After much consideration 

 I agree, but I am not satisfied that some endotheca does not 

 exist near the columella. 



III. Alliance LITHOPHYLLIOIDA. 



Simple corals; with entire or dentate, incised or spined septa, endotheca, 

 and a spongy or trabeculate columella. Wall costulate and naked, or with 

 an epitheca. 



Tribe I. With entire septa. 

 „ II. With dentate septa. 

 I. Genus Parasmilia, Ed. & H. 

 Genus Dasmosmilta, de Pourtales. 

 Genus Conosmilia, Duncan. 

 II. Genus Lithophyllia, Ed. 8s H. 

 Genus Circophyllia, Ed. & H. 

 Subgenus Leptaxis, Reuss. 

 Subgenus Antillia, Duncan. 



Genera absorbed : — 



CYLicosMiLiA,Ed. & H. ; CasNOSMiLiA, dc Pourtales ; 

 Anomocora, Studer ; Cyathophyllia, E. de From. ; 

 Smilophyllia, E. de From.; Syzygophyllia, 

 Reuss; Cynarina, Briigg. ; Scolymia, Ilaime ; 

 HoMOPHYLLiA, Briigg. 

 Leptaxis and Antillia become subgenera. 



