ALCYONARIA OF SIND. 57 



banki of the British Lower Chalk, whose septa are more curved and granular. It is 

 nearer the Cretaceous species than Stephanophyllia discoides, M. Ed. & H., from the 

 London Clay. 



Family POBITIBJE. 

 Genus LITHAE^A, M. M. & J. H. 



Litliaraea, M. Ed. Sf J. H., op. mf. p. 22. 



1. LiTHAE^A GEANDis, Buncan. Plate XI, Figs. 11, 12, 13. 



The corallum is elliptical in shape, convex above, and flat at the edge and concave 

 in the middle below. The calices are large, hexagonal, or irregular in size and shape, 

 and are shallow. The margins are stout and trabecular and are irregular in outline, 

 angular or circular, being occasionally produced. The septa are stout, distant, plain, 

 often wavy, and the larger form a trabecular columella with their inner ends; the 

 secondaries and tertiaries often join. There are twelve large and twelve smaller septa, 

 more or less developed in different calices. The laminae are not very perforate. The 

 floor of the calicular fossa is closed by dissepiments, which are not very perforate. 



The base of the coral has no epitheca, but the costse and an exotheca exist there 

 in abundance. 



The length of the corallum is 3^ inches, the height is rather over 1 inch. The 

 breadth of the largest calice -j^o i^ich ; -^q inch is a common length. 



Locality. South-west of Lynyan, Ranikot group. Survey-number G f|f . 



Illustrations of the Species in Plate XI. 



Fig. 11. Side view of corallum. 



12. Costse : magnified. 



13. Part of the base : magnified. 



This species is closely allied to Idtharoea epithecata, nobis, from the Cretaceous 

 olive shales of Jakhmari, described at p. 23. The absence of a definite epitheca and 

 the size of the calices constitute nearly the only distinction, but it is a fair one. 



Genus PORITES, Lamarck. 



1. PoEiTBS SUPEEPOSITA, Buncan. Plate XIV, Figs. 5, 6. 



The corallum is in the shape of an irregular nodule, with a small elliptical base, 

 swollen and constricted sides, and a tumid convex upper surface. Lines of superposi- 

 tion occur, and the coral consists of a number of layers, one over the other, or of a 

 central mass whose sides have grown in layers irregularly. The calices are not 

 crowded, are but slightly polygonal, and often circular, for there is an unusual amount 

 of trabecular tissue at the wall. The septa are close and crowded, rather short, not 

 much thicker at the margin than within, irregular in their size and direction, many 

 joining others ; there are 24 of them, and pali exist in the form of bead-like points, 



I 



