CORALS FROM THE LIAS. 145 
The genus Thecocyathus as yet comprises only two other species, which equally belong 
to the Upper Lias: Z. tintinnabulum’ and T. mactra;? T. Moorii differs from both, by 
the direction of the septa and by the form of the pali. 
Genus TROCHOCYATHUS (p. XIV). 
TrocuocyaTuus? primus. Tab. XXX, fig. 8. 
Corallum simple, subpedicellate, conical at its basis, cylindrical higher up, and sometimes 
slightly curved ; twelve sub-equal costee. Height nearly three lines; diameter of the calice 
about half a line. 
Found in the superior Lias at Ilminster, by Mr. Ch. Moore. 
We are very uncertain as to the zoological affinities of this small Coral; it is in a very 
imperfect state of preservation, and, as far as its characters are known, appears to belong 
to the genus Zrochocyathus; it differs from the other species of that group by its slender 
form and very small number of septa. 
Family—CYATHOPHYLLID Ai (p. Ixv). 
Genus CYATHOPHYLLUM (p. lxviii). 
CYATHOPHYLLUM? Novum. Tab. XXX, fig. 7. 
Corallum simple, ceratiform, presenting but very slight circular constrictions, and 
covered with a thin epitheca. Calice almost circular, deep, and having a thin margin. 
Septa narrow, very thin, unequal alternately, and about 120 in number. Height, 
24 inches ; diameter of the calice, 1 inch 2 lines. 
The fossil Coral here described belongs to the collection of the Geological Society of 
London, and is entered in the catalogue of that establishment has having been found in 
the Lias, but without any other indication. It is in such a bad state of preservation 
that we have not been able to ascertain, with any degree of certainty, its generic characters; 
but it much resembles, by its general form, some species of the carboniferous periods 
belonging to the genus Cyathophyllum, in which we have placed it provisionally. 
The Coral, of which a cast was found in the Lias at Wiston, by Mr. Walton, as above- 
mentioned, had very delicate and numerous straight septa; its calice was oval, and about 
1 inch 3 lines broad in one direction, 1 inch in the other; it appears to be referable to the 
genus Aontlivaltia. 
1 Cyathophyllum tintinnabulum, Goldfuss, Petref. Germ., tab. xvi, fig. 6. 
2 Cyathophyllum mactra, Goldfuss, op. cit., tab. xvi, fig. 7. 
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