ALCYONAEIA OF SIND. 63 



alternately very small and large, at the sharp yet low colline top. The larger septa 

 have a clubbed end; and there are about twelve of them in the space of ^ inch. 



Height of the coral 1^ inch ; breadth 5|- inches. 



Length of series 1 J inch to f inch ; breadth J inch. 



Height of valleys ^u- inch. 



Locality. Maliri, at the top of the Khirthar series or base of the Nari. Survey- 

 number G ^-. 



Illustration of the Species in Plate XX. 



Fig. 10. -Half of the corallum : natural size. 



Genus HYDNOPHOEA, Fischer de WaUheim. 

 1. Htdnophoea Malikiensis, Duncan. Plate XIX, Figs. 11, 12. 



The corallum is very massive, flat and costulate below, gibbous above, and covered 

 with moderately large, sharp-edged, broad-based coUines, very irregularly placed and 

 sized. Many collines are oblique, and the valleys are deep, the septa being large, and 

 alternately large and small. The columella is absent. 



Height of the coral 2\ inches ; length of specimen 7 inches. 



The longest colline is -fa inch, and the distance from one colline to the next is 

 about ^0 inch. 



Locality. Maliri, south of Chotra, at the top of the Khirthar series or base of the 

 Nari. Survey-number G -g^. 



Illustrations of the Species in Plate XIX. 

 Fig. 11. A part of the corallum: natural size. 

 12. A colline : magnified. 



Genus FA VIA, OJcen. 

 1. Favia Malieiensis, Duncan. Plate VI, Figs. 3, 4. 



The corallum is massive, large, thick, and somewhat flat at the base, and convex 

 above and sloping at the sides. The calices are excessively irregular in size, shape, pro- 

 jection, depth, and in their details. The costse are larger than the septa, and usually 

 unite with those of the next calice, but a line of depression sometimes intervenes ; they 

 are distinct, crowded, minutely granular, and subequal. Every alternate costa corre- 

 sponds with a rudimentary or else with a very small septum. The septa are smaller 

 than the costse, spread over the floor of the deep calices, are slender alternately, and 

 usually enlarge near the axial space, so as to form part of the small spongy columella. 

 There are three cycles or 24 septa in the smaller calices, and in the long and deformed 

 ones the fourth cycle may be reached. The costse form a very prominent part of the 

 coral, and they cover a broad space between the calices as a rule. 



Length of largest calices, including costal prolongations, -^q inch. 



Depth of calices often -^ inch. 



Locality. Maliri, south of Chotra, at the top of the Khirthar beds or base of the 

 Nari series. Survey-number G ■^■. 



