48 THE FOSSIL COEALS AND 



striated with costal markings on a rather undulating surface ; they are subequal, small, 

 regular, and usually alternately large and a little smaller, especially near the margin ; 

 but nearer the pedicel the striae are nearly equal. 



Height of corallum If inch ; breadth of upper surface 4| inches. 



Breadth of the largest calice l^g inch. 



Locality. Jhirk, Eanikot group. Survey-number G ^^a- 



Illustrations of the Species in Plate VI. 



Fig. 7. Side view of the corallum : natural size. 



8. Septa, magnified, showing synapticulse. 



9, Junction of septa on a colline. 



10. Costal striee of underpart : magnified. 



ELLIPTOSERIS, gen. nov. 



The corallum is simple, conical, compressed, with a largely open, elliptical calice. 

 There are costse, but no epitheca; there is no columella, but an elongate and deep axial 

 space. The septa are numerous, and the smaller join those between them near the axial 

 space. There are pali before the joined septa. Synapticulse are numerous in the calice. 



1. Elliptoseeis apeeta, Duncan. Plate VIII, Figs. 3-6. 



The narrow peduncle presents traces of rupture from a former attachment. The 

 costse pass up the conical and rapidly expanding body to the calicular margin, and are 

 small, close, granular, and subequal. 



The calice is very widely open, and is slightly convex from the axial space to the 

 margins. The septa are very numerous, close, crowded, and unequal ; the larger are 

 thickest from the centre of the calice to the axial space, which they bound with per- 

 pendicular edges ; they are thin externally and distinctly granular. There are many 

 smaller septa, which are thickest at the margin, and become very thin near the axis, 

 where they are joined laterally by still smaller ones ; after the junction, a palus, in the 

 form of a rounded lobe, exists before them. Occasionally minute pali are found on 

 the smallest septa. There are about 248 septa, and they are arranged in multitudes of 

 sets of three small between two larger ones, a rudimentary septum existing also at the 

 margin. The synapticulse are small and frequent. 



Height of corallum -^q inch. 



Length of calice l^^- inch ; breadth of calice I-j^q inch, 



Locality. Jhirk, Eanikot group. Survey-number G f f^^. 



Illustrations of the Species in Plate VIII. 



Fig. 3. The corallum : natural size. 

 4. Septa and pali : magnified. 

 5 & 6. Septa: magnified. 



