30 THE FOSSIL COEALS AND 



Subfamily Sf'TLINAOE^. 



Genus STYLINA. 



Stylina, M. Ed. Sf J. H., vol. ii. op. eit., p. 232. 



1. Stylina Eeussi, Duncan. Plate X, Figs. 11-14. 



The corallum is convex above, with gibbous projections, circular in outline, and 

 conical and pedunculate inferiorly. 



The upper surface and its gibbosites are crowded with numerous, very slightly 

 projecting, circular, or deformed calices, some of which are separate and others close. 

 The normal calice has a circular, sharp, and rather exsert narrow margin, which is very 

 distinct, a very large, central styliform columella rounded above, and subequal costae 

 passing over the wall to the intercalicular space, where they terminate. 



The septa are alternately large and small, long and short, and there are three 

 cycles in six systems. The primaries and secondaries are much alike, and reach close 

 to and touch the columella ; sometimes some do not reach so far. The tertiaries axe 

 smaller, and usually do not pass far inwards from the wall. The septa are all smaller 

 than the costse ; and the tertiaries have much larger costee attached to them than their 

 own laminae. 



In some calices the walls touch, but there is no connexion then by septa-costae. 



The intercalicular space presents the straight ends of the radiating costae. 



The columella, in longitudinal sections, is very large, straight, cylindrical, or slightly 

 compressed, and is marked, from above downwards, with a great number of irregular 

 cross stripes or projecting ridges ; these give origin to minute trabeculae, which join 

 the larger septa to the columella. The sides of the larger septa above, visible in 

 longitudinal section, are minutely granular in lines placed across them. 



The endotheca is moderately developed, and the epitheca has been worn off the 

 specimen. 



Height of corallum, including gibbous prominence, 1-^^ inch ; breadth 1-^ inch. 



Diameter of calices j^^ to xs^ inch. 



Locality. Jhirk, Eanikot group. Survey-number G | 



280 

 a4a- 



Illustrations of the Species in Plate X. 

 Fig. 11. The calices on the corallum : natural size. 



12. The calices : magnified. 



13. The columella in longitudinal view: magnified. 



14. Costse on base : magnified. 



This species is only generically allied to those Stylince which Eeuss described from 

 Castel Gomberto. 



Genus STYLOCCENIA. 



StyloeoBnia, M. Ed. Sf J. H., op. cit. vol. ii. p. 250. 



1. Sttloccenia maxima, Duncan. Plate XII, Figs. 1-5. 



The corallum is large, with a circular and concave base, and has rather thin edges. 

 The upper surface is convex, with a central conico-cylindrical upgrowth. The calices 



