70 THE FOSSIL COKALS AND 



The coral is figured on plate xii. fig. 2, a, h, c, of the work above mentioned ; and 

 views of the side and of the base are reproduced here. 



Illustrations of the Species in Plate XVIII. 

 Fig. 1. Side view of the corallum : natural size. 



2. The base : slightly magnified. 



3. A side view of the costse : magnified. 



4. The ornamentation of a septum : magnified. 



The variety has the general shape of the type ; but the epitheca, which appears to 

 be pellicular, is merged into a confused outer surface in which the costse are feebly 

 seen. The septal arrangement is not complete in its cycles, and two large septa have 

 nine others between them ; but the ornamentation is the same. The granulation of the 

 septa is very close and marked. The pali are small, and the columella barely exists. 



Height of the corallum -^ inch ; breadth 1 inch. 



Locality/. Near Eaduk, ten miles S.S.E. of Jhangara (Survey-number G ^) ; and 

 also west of Bhagathoro Hill, south of Sehwan (Survey-number G ^^). 



Two young corals belong to this variety, and are i% and -^ inch in length. The 

 external texture of the base is remarkable, and is of that broken, mosaic kind which is 

 so often seen in these Sind corals. In the smaller one the costse are more distinct. 

 Fig. 5. A young coral of the variety. The epitheca : magnified. 



6. A smaller one placed on a nummulite. The base : magnified. 



All were from the same locality. 



2. Teochocyathus nummifoemis, Duncan. Plate XX, Figs. 1-4. 



The corallum is very flat, circular in outline, slightly convex above and below, with 

 rather a sharp margin. The calice is widely open, shallow, and with a small, slightly 

 elliptical central space, where there is a papillate columella. The septa are excessively 

 crowded, and there are numerous repetitions of series composed of three small septa, of 

 which the central is the largest, placed between two larger. This arrangement is 

 repeated so often that there are at least six cycles of septa, or nearly 200 of them. The 

 primaries and secondaries are larger than the others and are subequal ; the tertiaries 

 are next in size, and then the rest diminish according to the order. The larger septa 

 are as thick midway in their course as at the margin, and the smallest are slightly wavy 

 in their course and join the larger ones. The larger septa reach close to the edge of 

 the axial space, and end in large, lobed pali, those of the primaries and secondaries 

 being subequal and larger than those of the other orders. The innermost pali, about 

 as thick as the septa, form a very marked circle ; and the outermost are smaller, and they 

 are rounded above. Small pali exist still further externally, and belong to higher orders ; 

 but two small rounded pali, belonging to the penultimate orders, are between the first 

 and second rows. The septa are granulated in linear rows, which crowd the sides in 

 regular vertical order. 



There is a pellicular epitheca, which is stout, and the costse are usually visible 

 through it. It and the base are marked with concentric growth-rings, and on the 



