190 E. F. TOMES ON THE STEATIGEAPHY OF THE 



Teictcloseeis, n. g. 



Coralluni composite, depressed; calices few in number, in the 

 centre of the calicular surface, and arranged in a line. Septa very 

 numerous, straight and anastomosing. Synapticula well developed. 



This genus may he briefly described as a compound Cyclolite, 

 having a series of calices occupying the linear space ordinarily 

 occupied by the elongated fossula. In the only example yet 

 obtained there are three calices only. 



Teictcloseeis Anningi, n. s. (PI. IX. fig. 1.) 



Corallum depressed, with an irregular upper surface, highest in 

 the middle, the outer margin thin, broadly lobed, and slightly 

 everted. Under surface irregularly concave, and without an 

 epitheca. 



Calices three in number, in a curved line in the middle of the 

 calicular surface. 



There is no fossula. 



The septa are equal, thin, straight, numerous, and anastomosing, 

 and they meet in the centre of the calices. 



The inter septal spaces are not more than half the thickness of 

 the septa. 



Synapticulse numerous and well developed. 



Height of the corallum \ an inch. 



Its greatest diameter \\ inch. 



Thamnastejsa Etheeidgei, n. s. (PL IX. fig. 4.) 



The corallum is massive, and probably adherent. In the smaller 

 examples it is more or less rounded in outline, but in the larger 

 ones more irregular, in all the upper surface is pretty evenly 

 convex. 



Basal plate presenting indications of intermittent growth. 

 Epitheca rudimentary, costal striae very indistinct. Calices rather 

 large, shallow, equal, regular in outline, and approximate, with a 

 tendency to a serial arrangement. Septa numerous, rather thin, 

 regular, and retaining their thickness as they approach the columella. 

 The cycles are rather difficult to trace, but there are probably four, 

 the septa being about thirty in number. The columella is composed 

 of papillaB, and very irregular in its degree of development. The 

 largest specimen is about 2| inches in diameter. With weathering 

 the walls become more apparent (though the septa of proximate 

 calices are still confluent), and the columella is almost lost. The 

 calices then look larger. 



This species occurs in the Middle Lias at King's Sutton, about 

 three miles S.S.E. of Banbury, at which place and at Adderbury 

 (also near to Banbury) the marlstone of the Middle Lias is re- 

 markably fossiliferous. It has been specially studied by Mr. Beesley, 

 who communicated a very interesting paper on this and other 

 Liassic strata, which was read at the Annual Meeting of the 



