18G6.] 



DR. J. E. GRAY ON TWO NEW CORALS. 



Calyptrophora. 



25 



The coral cylindrical, furcately branched ; the branches elongate, 

 subsimple ; the axis horny ; the bark thin, smooth, calcareous, with 

 regular equidistant whorls of cells ; cells with a circular mouth having 

 a raised edge, placed close together and forming a raised ring round 

 the coral. Each cell is furnished with two obconic pellucid cells 

 placed one on the other ; the lower cell is pellucid, apparently 

 articulated to the axis of the coral, very narrow near the mouth 



Fig. 1. 



Calt/i>li(i]> hura japonica. 



of the cell and wide at the other end ; the lower surface of the 

 outer aperture is furnished with two elongated horn-like processes. 

 To the centre of this basal cone is articulated or affixed a similar 

 pellucid horn-coloured cone or rather conical vase, which is furnished 

 with a slightly keeled edge at its widest part, and then contracts as 

 if it had a shorter conical lid, with an aperture in the middle of this 

 lid-like contracted part for the emission of the polype. The two 

 cones are as it were articulated to the stem ; and the lower one stands 

 at right angles with regard to it, and the upper at right angles 

 with regard to the lower one, so that the aperture of the upper one 

 is vertical. 



