84 TOMES : MESOZOIC CORALS OF THE COUNTY OF YORK. 
Trochocyathus conulus Phillips sp. 
Caryophyllia conulus Phill. 111. Geo. Yorkshire, 2nd edit., 
pi. ii., fig. 1. 1835. 
Turhinolia conulus Mich. Icon. Zooph., pi. i., fig. 12a (not 
12b on the same plate). 1840-1847, 
Trochocyathus conulus Edw. and Ilaime. Brit. Fos. Cor., 
p. 63, pi. ii., fig. 6. 1850. 
This species occurs in the Speeton Cla}', Yorkshire, and in 
the Gaiilt at Folkstone. An elongated variety is also found at 
both localities, which was described and figured by Professor 
Duncan as Smilotrochus cylindricus. 
Trochocyathus? calcaratus Tomes. 
Smilotrochus calcaratus Tomes. Geol. Mag., 1815, p. 543. 
A well-preserved specimen of this species, obtained from the 
Speeton Clay, is in the hands of the present writer, and has been 
compared with others from the Folkestone Gault. It is a peculiar 
species, the genuine position of which is by no means clear. 
Trochocyathus Wiltshirei Duncan ? 
Turhinolia conulus Mich. Icon. Zooph., pi. 1, fig. 12b 
(not fig. 12a), p. 1, 1840-1847. 
Michelin figures two , distinct species of corals, presumably 
from Speeton, one of which is free and now known as Trocho- 
cyathus conulus^ and the other (figure 12b) an attached form. 
Of the latter I can only say that it does not represent T. conulus^ 
but that it has considerable resemblance to T. Wiltshirei, as I 
have already stated in a recent communication to the Geological 
Magazine."^ 
The foregoing list of Yorkshire madreporaria, though a very 
short one, is remarkable for the number of interesting, and I 
might say anomalous, forms. In the Millepore bed of the Inferior 
Oolite there are three not found elsewhere, and the Corallien is 
distinguished by the presence of the remarkable genus Protoseris, 
and by a species of Latimcfundraria and one of 1 hecosmilia not 
* Decade lY., Vol. VL, p. 302. 1899. 
