13 



The coluraolla consists of a large elliptical mass of thin curling ribbon-like 

 processes. 



The corallum is pure ivory-white, but often the dull epitheca is discolour- 

 ed. The soft parts also are quite colourless. 



More than 200 specimens, the majority living, were dredged off the Elica- 

 peni Bank (Laccadive Sea) at a depth of 1000 fms., and numerous specimens, 

 further north in the same sea, at 1070 fms. 



Unlike so many other deep sea Madreporaria, this species shows a singular 

 constancy of form. 



3. Caryophyllla scillceomorpha, Alcock. PI. i. figs. 3, 3. 



Caryophyllia scillseomorpha, Aloook, Journ. As. Soc. Bengal, vol. Ixiii. pt. 2, 1894, p. 186. 



This species has a striking resemblance to Caryophyllia scillas (Seguenza, 

 Mem. Accad. Sci. Torino, ser. 2, vol. xxi. 1864, p. 442, pi. v. figs. 5, 5-c.) 



Corallum elegantly horn-shaped, with the convexity of the curve some- 

 what inflated and the apex not corresponding with either principal axis. 



Costse are present and then are not conspicuous only near the calicular 



margin. 



The calicle is deep, and its orifice is elliptical the ratio of the axes as 

 100: 145. It is divided into fifteen equal chambers by as many large exsert 

 (equal) septa, and each chamber is divided into four stalls by three small septa a 

 median larger with a particularly wavy vertical edge, and two lateral smaller. 

 The surfaces of all the septa have the radiating granular striae remarkably 

 well developed and regular like little cockle-shells. 



The pali are fifteen in number and are placed opposite the median septum 

 of each of the fifteen principal chambers : like these septa, their free edge is 

 strongly crimped. 



The columella is deep-seated and consists of from five to eight elegantly 

 curled ribbons, in a series of remarkable regularity. 



The colour of the living corallum is tawny purple outside and white 

 smudged with madder inside. 



Off Madras, 107 fms. 



4. Caryophyllia ephyala, Alcock. Pi. i., figs. 4, 4a. 



Caryophyllia ephyala, Alcock, Ann. Mag. Nat. Hist., Jan. 1891, p. 6. 



The corallum is goblet-shaped, having a broad encrusting base and a 

 slender cylindrical pedicle which expands rather suddenly into a slightly- 



