88 THE FOSSIL CORALS AND 



There are about 6 or 8 collines to an inch. Height of collines under i% inch. 

 Locality. Magar Pir, near Karachi, base of Gaj group. Survey-number G ^f^. 



Illustrations of the Sjpecies in Plate XXVI. 



Fig. 1. Part of the corallum. 



2. Collines: magnified. 



3. Endotheca and columella : magnified. 



2. MoNTicuLASTE^A SOLIDIOE, Buncau. Plate XXVI, Figs. 5, 6. 



The corallum is large, very thick, and nearly plane on its upper surface. The 

 collines are stout, low, unequal, and often curved ; and the septa are alternately large 

 and small, but are of equal length. The tip of the collines is blunt, rounded, and 

 sometimes notched. The columella is thin and linear. 



Height of the corallum 3 inches. 



Length of collines yq^^ tq inch. Six septa to -^q inch. 



Locality. Sita Nai, Khirthar range, Gaj group. Survey-number G -^-f^. 



Illustrations of the Species in Plate XXVI. 



Fig. 5. Part of the upper portion of the coral : natural size. 

 6. AcoUine: magnified. 



3. MoNTicuLASTB^A iNiEQTJALis, Buncan. Plate XXVI, Fig. 4. 



The corallum is solid, thick, and the upper and lower surfaces are flat. The 

 collines are very irregular in their size, shape, direction, and length : some are long, 

 broad, straight, or curved ; others are minute, low, and at all angles with the larger. 

 The columella is distinct, and the septa (alternately large and very slender and small) are 

 of equal length. 



Height of corallum 1 inch to 1^ inch. 



Length of large collines l^^o ™ch ; of small collines to to ^ inch. Number of 

 septa to xo inch, six large and six small. 



Locality. Near Unahar, Khirthar range, Gaj group. Survey-number G ^^. 



Illustration of the Species in Plate XXVI. 

 Fig. 4. Upper part of the corallum (part of) : natural size. 



4. MoNTicuLASTE^A ELONGATA, BwTbcan. Plate XXVII, Figs. 1, 2. 



The corallum is very large, in flat branches, which are covered on all sides with 

 very numerous, small, yet elongated narrow series, their diminutive height and length 

 contrasting with the bulk of the mass. The direction and size of the series are very 

 variable, and small collines are occasionally seen in the axial spaces of others. The 

 collines are blunt at the top and never high ; the valleys are narrow ; and the columella 

 is distinct as a lamellar ridge in the axial space ; it is low and distinct (but it often has 

 been destroyed). The septa do not unite at the axial space ; they are frequently 



