Corallum fixed by a very short and rather slender peduncle with a non-encrusting base, 

 a little curved and compressed, the major axis ol the calicle on a slightly lower |)lane than 

 the minor. Thecal wall finely yranular ; the costa- are little more than oranular slri.r becomine r 

 distinct ridges only near the calicular margin. 



Septa stout, exsert, their surface beset with radiating rows of small granules; they are 

 64 in number and have an apparent arrangement in eight systems of four cycles. Those of 

 the iïrst two cycles are equally large and exsert ; those of the third cycle are a little smaller 

 and less exsert than their predecessors and a little larger and more exsert than their successors. 



Pali stout but lamelliform, 32 in number and placed opposite all the septa except those 

 of the last cycle ; they are of two sizes - - large ones opposite the 1 6 septa of the apparent 

 third cycle, and small ones opposite the 16 septa of the apparent fïrst two cycles - - but they 

 all stand in one ring of wonderful regularity, sharply defined both from the septa and from 

 the columella. 



CoLumella deep-seated, formeel of a somewhat spongiform cushion of coarse granules. 



Corallum whitish, soft parts brownish or reddish purple. 



Height of corallum about 23 millim. 

 Major diameter of calicle 23 ., 



In appearence this coral is exactly like a Caryophyllia^ the pali, though being present 

 before all the septa except those of the last cycle, standing in a single ring. It has a striking 

 resemblance to the Paracyathus pulchellus (Phil.j figured by Lacaze-Duthiers in Arch. de Zool. 

 Expérim. (3) V. 1897, P'- VII, only the pali are more regular than in the last species. As 

 regards the pali, it has a close resemblance to Paracyathus coronatus Duncan (Proc Zool. 

 Soc, Lond., 1876, p. 432, pi. XXXYIII, Fig. 13). 



14. Trochocyathus pileus^ n. sp. Plate II. Fig. 11, 1 ia. 



Stat. 95. 5°43'.5 N., ii9°4o'. E. 522 m. 4 Ex. 



This species appears to be closely related to T. mitratus (Goldf.) from the Miocene of 

 Southern Europe. 



Corallum shaped either like a wedge or like a Phrygian cap, conical, a good deal 

 compressed, with the base either acuminate ancl curved in the plane of the minor axis, or 

 straight and truncated. In young specimens the corallum seems to be fixed. 



Costa? equal, and equally salient from calicular lip to base, all very elegantly and 

 evenly milled or serrated throughout their extent. 



The calicular fossa is not very deep and is well filled by the septa and pali. The major 

 axis of the calicular orifice is on a somewhat lower plane than the minor. 



The septa, which are strongly echinulate, are in six systems of four cycles, with a fifth 

 cycle developed in some of the half-systems. Those of the first two cycles, which are equal, 

 are the largest and far the most exsert, and those of the lowest cycle are very much more 



