CORALS FROM THE DEVONIAN FORMATION. 233 
4, Genus ENDOPHYLLUM.! 
1. Enpornytium Bowrrsangi. ‘Tab. LIII, fig. 1. 
EnpopuyLtum BowerrBankl, Milne Edwards and Jules Haime, Pol. Foss. des Ter. Paleeoz., 
p. 394, 1851. 
Corallum composite, astreiform. Corallites more or less intimately united together 
by rudimentary exterior walls and an irregular vesicular tissue. Inner wa//s well con- 
stituted, circular, and often double. Principal septa (30 or 32) pretty well developed, rather 
slender, very flexuous inwardly, extending almost to the centre of the calice, and alter- 
nating with an equal number of smaller septa. They do not project much outside the 
‘ wall, so as to form costal striae, that soon disappear in the vesicular tissue. Zubule 
well developed and somewhat irregular. Diameter of the mural circles about 8 lines, 
distance between them 5 or 7 lines. 
Found at Barton near Torquay. 
In the Collections of Mr. Bowerbank, Dr. Battersby, &c. 
The Genus Exporuyiium has been established since the publication of the Introduction 
to this Monograph, and is intermediate between Cyathophyllum and Acervularia, having 
most of the structural characters of the first, but presenting completely vesicular tissue 
exteriorly to well-defined walls. In Acervularia there is a well-developed epitheca, which 
does not exist in Endophyllum, and the septal system is much more developed in the 
space between the two mural investments. 
Endophyllum Bowerbanki differs from 2. abditum’ by its outer walls being rudimentary, 
its inner walls being well constituted, and its septa thicker though still rather slender. 
2. Enpopuyiium aspitum. ‘Tab, LII, fig. 6. 
ENDopHYLLUM aBpituM, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palzoz., 
p- 394, 1851. 
Corallites more or less closely united by polygonal walls, which are rather strong. 
Inner walls thin, often double and rather irregularly circumscribed. The space comprised 
between the two walls is filled with large vesicles, on which some costal stria may be 
recognised. Principal septa (34 to 40) very slender, especially inwardly, where they 
become much curved, an equal number of smaller septa alternating with the principal 
ones. Diagonal of the large calices almost 2 inches; diameter of the mural circle about 
12 lines. 
| Milne Edwards and Jules Haime, Pol. Foss. des Terr. Paleeoz. ; Archives du Muséum, vol. v, p. 393, 
1851. 
2 Tab. lii, fig. 6. 
