80 TOMES : MESOZOIC CORALS OF THE COUXTY OF YORK. 
of the third cycle are two-thirds the length of the first cycle, 
and of the fourth cycle one-third the length of the first. All 
the septa are of nearly uniform and medium thickness, and when 
unworn have prominent denticulations on their edge. 
in. line. 
Diameter of the figured specimen... ... 16 
Height of the same... ... ... ... 0 7 
Breadth of the widest valley ... ... 0 6 
Number of rows of calices, 9. 
Hab. — The Millepore bed of the Inferior Oolite, Claughton 
Wyke, Yorkshire. 
With specimens of Gonioseris and Dimorjohosmilia from the 
Millepore of the Inferior Oolite at Claughton Wyke, I have 
received a single specimen of a coral, which, though too ill 
preserved for specific determination, has characters which are 
deserving of particular notice, as they certainly indicate specific, 
if not generic, diff'erences from any of the Jurassic corals at 
present known in Yorkshire. 
It is small, tuber shaped, and the whole of its surface, with 
the exception of a small area of attachment, is made up b}^ a 
few large shallow calices, which are united by costal prolongations 
of the septa. The edges of the septa are denticulated. 
Thecosmilia Annularis Fleming sp. 
Caryophyllia annularis Fleming, Brit. Amm. p. 509. 1828. 
Thecosmilia annularis Edw. and Haime, Polyp. Terr. 
Pol^eoz., p. 77. 1851. 
The Malton specimens of this well-known and common 
species need no further remark than to say that they do not 
difi"er in any way from those found in other localities in 
England. 
Thecosmilia costata Fromentel. 
Thecosmilia costata E. de From. Intro. Etud. Polyp. Foss., 
p. 143. 1858-1861. Polyp. Cor. Environ, de Gray, p. 15, 
pi. 6, fig. 1. 1864. 
