ALCYONAEIA OF SIND. 43 



considerable block of massive coral covering many inches of surface and some of 

 height." 



The calicular surface is plane or slightly undulating, and the calicos are close 

 together, small (^ inch), and the columella is distinct, rather large, and is met by eight 

 equal septa. These have a paliform enlargement a little remote from the columella ; 

 and there are eight minute spinose-looking intermediate septa. 



Locality, Jhirk, Eanikot group. Survey-number Gf|-|a- 



Illustrations of the Species in Plate XV. 



Fig. 10. A piece of the corallum. 



11. Calices: magnified. 



4. AsTEOCCENiA GiBBOSA, Dimcan. Plate XII, Figs. 7-10. 



The corallum is massive, concave beneath, where it covered "shells and other foreign 

 substances, and gibbous and rising centrally in a nodular form above ; it is thick, and 

 the crovrded corallites are tall. 



The calices are circular and rarely polygonal, are separated by granular coenen- 

 chyma, or by a ridge, or they may be close and without any intermediate ccenenchyma, 

 according to the growth. A subreticulate appearance is sometimes produced by the 

 prolongation of the short costse reaching the intercalicular ridge. 



There are eight septa, which are subequal, with a convex and arched outline where 

 free above ; they are stout near the margin and smaller at the columella. No other 

 septa are seen, except in very rare instances, and their existence is exceptional. A costa 

 frequently exists between those of the septa. 



The columella is stout, styliforra, prominent and rounded above, and it is furnished, 

 as it were, with a collar at the place where the septa join it. 



Very small calices have the eight septa. 



The endotheca is largely developed and is close. 



Breadth of the corallum 3 inches and more ; height 2 inches. 



Where the intercalicular tissue is well developed there are about five calices and 

 their intermediate tissue in J an inch of length ; but when the calices are close there 

 are about eight in the same space. 



Locality. Jhirk, in the Eanikot group. Survey-number G fffa. 



Illustrations of the Species in Plate XII. 

 Fig. 7. The corallum. 



8 & 9. Calices with intermediate tissue : magnified. 

 10. Side view of a septum : magnified. 



5. ASTROCCENIA KAMOSA, Sowcrhy, variety minor. Plate XII, Figs. 11, 12, 



Some portions of small broken branchlets, with the usual tuberose outlines of the 

 West-Indian varieties of the type, are found in the Eanikot group of strata south-west 

 of Jhirk. 



The specimens vary from the type in having smaller calices, the calicular margin 



a2 



