498 A. CHAMPERNOWNE ON SOME ZAPHRENTOID 
to that of greatest curvature evident. from its greater length and 
convexity. Gane elliptical in outline, measuring 13 inch by 1 inch, 
the minor axis being the plane of bilateral sy mmetry and containing 
the fossula. Septa about 40 primary, with traces of an intermediate 
series. Septal fossula deep, arising from the more convex side and 
extending a little beyond the bottom of the calice. 
Obs. The coral here described is in an imperfect condition and 
has lost all trace of wall or epitheca, the outer surface being yer- 
tically marked by the edges of the actual septa and endothecal 
structures. The contour of the calice does not appear to be due to 
crushing, although a slight distortion is perceptible. The general 
form, on the contrary, suggests comparison with Z. ungula, Rominger, 
from the Corniferous Limestone of the Falls of the Ohio; but from 
this it is distinguished by its greater size and smaller septal number 
(Z. ungula, Rom., has 90-100 septa). 
I venture to suggest the specific name of Z. calceoloides for the 
present fossil. 
Loc. Mudstone Bay, in passage beds at the base of the limestone 
of Berry Head (Middle Devonian). 
CaMPoPHYLLUM, sp.? (Plate XX1. fig. 2.) 
This*is a polished section of a coral, taken just below the general 
floor of the calice, but cutting through a well-marked septal fossula, 
which 3s ‘seen filled with the surrounding matrix. It measures 2 
inches by 1 inch 7 lines, but is somewhat oblique. The direction 
of vision: is upwards or towards the calice, which is seen in a worn 
condition on the reverse side of the section. Septa about 92, of two 
orders. The primaries extend to near the centre; the secondaries 
are barely half as long. There are some tabule to be seen in the 
space below the fossula, and an outer zone of vesicular endotheca. 
These are omitted in the drawing, being in the original rather 
faintly indicated compared with the septa. 
Obs. The endeavour to decide to what genus this specimen 
should be referred has caused me much perplexity. Perhaps it may 
be that my sole justification for introducing it under the title of 
this paper is its possession of a well-defined septal fossulas Dr. 
Rominger* has argued that Messrs. Milne-Edwards and Haime 
have set an undue value upon the presence of a septal fossula (or 
‘“‘fovea”’), and that many of their so-called Zaphrenies have the 
essential characters of (2 yathophyllum. Mr. James Thomson? has 
also shown that a septal fossula is a common feature even in 
groups of corals that are in all other respects widely separated. 
At any rate the present specimen has far too complex an endotheca 
and perhaps too limited a “‘ tabulate ” portion thereof, besides the con- 
siderable development of the secondary septa, to be classed as a true 
Zaphrentis. It approaches Campophyllum, but it would be advisable 
‘Corals of Michigan,’ p. 141. 
t ‘On the development and generic relations of the Corals of the Carboniferous 
System of Scotland,” passim. 
