298 Dr. P. M. Duncan on some Fossil Corah from Sinde. 



1. Trochocyathus sinuosus, Edwards & Haime. 



A young specimen of this gigantic species is amongst the 

 Sinde Collection in the British Museum. Locality, Kurrachee. 

 European localities, La Palarea, Vicentin, Corbieres (Eocene), 



2. Oculina Halensis, n. sp. PI. XVIII. fig. 1. 



Corallum branching, the terminal branches being straight, 

 tapering, and cylindrical. The calices are very prominent, and 

 project obliquely; they are arranged in four parallel series, two 

 being on opposite sides of the corallum. The calices of the 

 opposite series are on the same level, and those of the inter- 

 mediate pair are midway ; consequently there is more or less of 

 a spiral distribution. The calicular edges are rather sharp, and 

 the costse are continued down the projection, but not on to the 

 coenenchyma, which is faintly granular. The septa are small, 

 and form six systems ; there are three cycles generally. The 

 laminse are barely exsert, and the primary septa are stout. The 

 pali are very small, being appended to the first and second orders 

 of septa. The columella is small. Occasionally there is a fissi- 

 parous growth. Diameter of branches t^-- po inch. Projection 

 of calices iro~TV i'^ch ; breadth of calices -^--tr inch. 



Locality, Sinde Tertiaries. Coll. Geol. Soc. 



This species, from its granular coenenchyma and short costal 

 strise, is more closely allied to the Eocene Oculina conferta than 

 to any others of the genus ; but the shape of the corallum and the 

 lateral and very prominent calices are sufficient to distinguish 

 the new species from any other ; but they bring it into alliance 

 with forms later than the Eocene. 



3. Phyllocoenia conferta, n. sp. PL XVIIL fig. 2. 



The corallum is flat, slightly convex above and gibbous below. 

 The corallites are short, distinct, crowded, occasionally deformed, 

 and generally variable in size. The calices are circular or ellip- 

 tical, and irregular in shape ; they are barely exsert, are very 

 shallow, dififer in size, but have well-developed costse, feebly de- 

 veloped septa, and rudimentary columellse. There is a small 

 amount of coenenchyma between some corallites. The costse are 

 close and crowded, a little inclined, not dentate, but simply 

 ridged ; and according to the paucity of septa in the corallites, so 

 are the costse unequal in size. In fully developed corallites the 

 costse are subequal ; but in the majority the alternate costse are 

 the longest, although the intermediate, which correspond to 

 small septa, are often the thickest. The septa are more delicate 

 than the costse, are hardly exsert, but dip at once downwards 

 and inwards; they are generally alternately large and small. 



