WENLOCK GROUP. 
113 

Case and 
Column of 
Drawers. 
Reference to McCoy's 
Synopsis: and Figures of Genera. 

FC 
Ge 
FC 
Gb7 
Gbs8 


FC 
Gbé6 
Ge 

FC 
FC 
Strephodes, 
Pl. 1 8, fig. 21, p. 31. 

Caninia lata, p. 28, 
Pl.16, fig. 12, 
and C. turbinata. 


Names and References; Observations, &c, 

Cyathophyllum trochiforme, McCoy, distin- 
guished by the proportions of the lamelle 
and the cup. 
Several sp. undescribed of this genus, or 
rather group of genera, remain in the 
drawers for future work. 
Petraia, sp. Probably a Cyathophyllum, as in- 
dicated by Milne Edwards and Haime, 
Omphyma, M. Edwards and Haime. A group 
of large Cyathophyllide, the largest (except 
Ptychophyllum) known in the Lower Paleo- 
zoic rocks: the cup is broad, and the septa 
do not reach the centre, which is occupied 
by broad flat tabule. The sides filled with 
the ordinary vesicular tissue. The outer 
coat (exotheca) generally sends down root- 
lets for support. Probably there are only 
two species in Britain. It is common in 
Sweden. 
Omphyma turbinata, Linn. (Milne Edwards, 
t. 69, fig. 1, Siluria, 2nd ed. Foss, 53, figs. 
4, 5, pl. 39, fig. 11). The widest form of the 
genus, but the specimens vary so much, 
that it is possible the following may be 
only a variety (C. lata McCoy is certainly 
So). 
Omphyma subturbinata, Milne Edwards, t. 68, 
fig. 1, differs chiefly in its greater length 
and the consequent narrowness of the cup. 
Omphyma? Murchisoni, Milne Edwards, t. 67, 
fig. 8. Siluria, 2nd ed. pl. 38, fig. 2. 
_ Ptychophyllum, Milne Edwards and Haime. 
A large expanded cup-coral: the limb of 
the cup is so much turned down, and the 
columella or central part so much thickened 
and twisted, that the coral, which has but 
a very short stem or cup, seems turned 
inside out. The genus is not confined to 
Numbers and Localities. 



a. 360, Dudley, figured 
specimen, McCoy; a. 334, 
Dudley, F.C, 
Dudley, F.C. and Walsall, 
F.C. Also Woolhope. 
Falfield, Tortworth (Earl 
Ducie). 
a. 674, Dudley, F.C.; b. 
711, Ledbury; b. 712, 
Woolhope © (Dormington) 
quarries. 
b. 709, Dudley, F.C. 
b. 710, Dudley, F. C. 
15 
