NO. 1101. GENERA OF SIMPLE FUNGID CORALS— VAUGHAN. 393 



2. Genus LEPTOPHYLLIA Reuss. 



1854. LeptophyUia Reuss, Denk.schr. Akad. Wiss. Wien, Mat. Naturliist. CI., 

 VII, p. 101. 



Orujlnal generic dlagnosiis. — "Corallum simple, more or less coni- 

 cal or turbinate, attached by the base. No columella. Very numerous, 

 crowded, tliin septa that fuse directly in the center, upper free mar- 

 gins furnished with very distinct, regular, pointed, short teeth. The 

 outer wall without epitheca, ribs distinct and covered with strong, 

 pointed, grain-like teeth. 



"Is separated from the very nearl}" related genus Montllvaltla })y 

 the absence of epitheca, from Trochosmilia b}' the dentation of the free 

 margins of the septa." 



Type species. — Leptop)kyllla elarata Reuss, Denksclir. Akad. Wiss. 

 Wien, Mat. Naturhist. CI., VII, p. 101, pi. vi, figs. 3-6. 



Dlstrihution. — Cretaceous, Senonian, Gosau, Austria. 



Pratz, in his Ueber die verwandschaftlichen Beziehungen einiger 

 Korallengattungen mit hauptsiichlicher Berucksichtigung ihrer Sep- 

 talstructur," made a careful study of the septal structure of Lepto- 

 phyUia clamta., and showed that the septa of that species are composed 

 of trabeculfe which stand more or less perpendicular to the septal 

 margin. The trabecular consist of rows of nodules (Knotchcn), which 

 are regularly grouped, quite often spirally, as in Cyclolites. The 

 lateral granulations of neighboring trabecular often fuse and form 

 vertical rows of pores. In the bottom of the calice the pores are filled, 

 the rows of pores are mostl}' seen on the upper part of the septum, 

 while on the low'er part they usually disappear. The wall is described 

 as dissepi mental.'' 



Ogilvie, in her Korallen der Stramberger Schichten/ redefined the 

 genus and followed the data of Pratz in drawing up her definition. 

 Felix, in his Anthozoen der Gosauschichten in den Ostalpen,^' merely 

 refers to Pratz's work for an account of the microstructure of the 

 genus. He coml)ines the Leptojyhyllia irregularis and L. clavata 

 Reuss, thus making the genus monotypic. Several other forms not 

 originally referred to LeptojjhyUia are also placed in the synonymy of 

 L. clavata. 



«Pal8eontographica, XXIX, 1882, pp. 90-92. 



^Gregory, in his Jurassic Corals of Cutch, p. 162, makes a statement that is difficult 

 to understand. In discussing the affinities of his Ethmolidx, he says: "They form the 

 chief part of the alliance LeptophylHoida of Duncan. But uncertainty as to the struc- 

 ture of true Leptoplnjllia of Reuss renders it inadvisable to take that genus as the type 

 of the group." I do not see how the description of Pratz, based on one of Reuss's 

 original species, could have been overlooked. There is scarcely any coral whose 

 septal structure is more thoroughly known than that of LeptophyUia. 



cPaheontographica, Sup. II, VII Abtheil., 1897, p. 218. 



'/ Idem, XLIX, 1903, pp. 200-202. 



