84 THE FOSSIL COEALS AND 



There are six large septa, which, are straight, level, usually larger near the columella, 

 and normally have pali vs^hich are expanded sideways or are nodular. The primaries 

 are separated by as many smaller secondaries, which are stout, and enlarge and expand 

 near the columella into small pali ; the twelve interseptal spaces thus produced 

 include very small septa, usually one in each, but occasionally three are crammed in- 

 These tertiary septa are small, and do not reach far inwards. The columella is well 

 developed and styloid, but rectangular and compressed in shape. In some calices the 

 twelve larger septa are united at their internal margins by lateral expansions. 



The costse are unequal in size, being attached at the margin to all the septa, and 

 it is only those of the primaries and secondaries that reach the intercalicular space. 



The corallites are very long ; endotheca is rare ; and the free inner margins of the 

 septa are denticulate. 



Height of corallum 3f inches; length probably some feet. Length of largest 

 calice rather more than ^o inch. 



Great masses of this coral exist with the septa and columella worn away, or in 

 the form of casts. 



Locality. Dumb, Sehwan-hill road, Gaj group. Survey-number G t^-. 



Illustrations of the Species in Plate XXV. 

 Fig. 1. A calice: magnified. 



2. Part of a calice seen from the side : magnified. 



Subfamily ASTBJEACEJE. ' '" 



Oenus ANTILLIA, Duncan. 



1. Antillia plana, Duncan. Plate XXIII, Fig. 5. 



This species was described in 1864, in my essay on some Fossil Corals from Sind, 

 in the ' Annals and Magazine of Natural History ' (1864, vol. xiii. p. 300, pi. xviii. 

 fig. 5). A specimen has been found at Dumb, Sehwan-hill road (Survey-number G ^i), 

 in the Gaj series. The new form is of the same size as that already described, but the 

 outline of the calice is circular. 



The corallum is very short, and has a flat base which nearly equals the calice in 

 diameter; the columellary space is small and the calice is shallow. The septa are 

 numerous, and there are at least five cycles of them ; they crowd near the margin, and 

 only the larger reach far inwards. Epitheca is noticed here and there, and the costse 

 are moniliform externally. 



Breadth of calice 1-^ inch. Height of the coral ^ inch. 



Illustration of the Species in Plate XXIII. 

 Fig. 5. The corallum : natural size. 



2. Antillia Indica, Dimcan. Plate XXIV, Fig. 11. 



The corallum is tall and conical, is elliptical at the widely open calice, and the 

 columella is small. The septa are very unequal. The epitheca is in transverse folds, 



