FAMILIES AND GENERA OF THE MADREPOEARIA . 85 



Grenus Ehipidogtra, Milne-Edwards Sf Jules Haime, Pol. foss. 

 des Terr, paleoz. p. 57 (1851). 



Colony flabelliform and lamellar, and folded more or less. The 

 corallites are in one narrow flexuous series, and their calices are 

 confluent and not distinguishable. The wall of the series is free. 

 The columella is lamellar. The valley formed by the series is 

 shallow, and the septa are exserfc, close, and entire at their free 

 edge. The costag are straight, and often subcristiform near the 

 calicular margin. Near the base, the wail is either naked or has a 

 rudimentary epitheca. Endotheca abundant. 



Distribution. — Fossil. Jurassic and Cretaceous of Europe. 



Genus Teleiophtllia, Duncan, Droc. Geol. Soc. Lond. Nov. 18, 

 1863, p. 34, pi. iii. figs. 5«, h. 



Corallum long, low, narrow, and pedicellate. Calices confluent, 

 forming a nearly straight series. Columella long, lamellar. Septa 

 numerous, close, granular, serrate above. Costse free and gra- 

 nular. Endotheca and epitheca well developed, and some exo- 

 theca between the costas. 



Distribution .—Fossil. Miocene : West Indies. 



Genus Desmocladia, Reuss, DenhscJir. der Kais. Akad. der Wiss, 

 Wien, 1874, Bd. xxxiii. p. 37. 

 Colony large, massive, bushy or fasciculate. Corallites very 

 long, spring from small bases, and enlarge in series upwards. 

 Series long, gyrose, narrow, not united by their walls. Costae 

 small. Columella parietal and spongy. Calicinal centres not 

 distinct. 



Distribution. — Fossil. Eocene : Europe. 



II. AUiance EUGYROIDA. 



Fissiparous Astrseidse with confluent serial calices ; calicinal centres 

 indistinct, except when young. Walls united directly, or indirectly by 

 exothecal structures, forming a massive colony. 



Tribe I. With entire septa. 

 Tribe II. With dentate or denticulate septa. 

 I. Genus Dendrogyra, Ehr. 

 Genus Pectinia, Oken. 

 Genus Eugyra, E. de From. 

 Genus Pachygyra, Ed. & H. 

 II. Genus DiPLORiA, Ed. & H. 

 Genus Stiboria, Etallon. 



