i6 
James A. Grieg. 
[No. 2. 
placed i — 2 m. m. apart from each other. The basal part is- 
1.5 — 3 m. m. in breadth. 
The polyp-cell is firm, extremely nnely granulated, and has 
the same Havannah-brown colour as the basal part; it is low,. 
broad, faintly conical, about 2 m. m. in height, and 1.2 m. m. in 
breadth at the base. The cell is furnished with 8 ribs, which show 
most prominently when the polyp is retracted. 
The polyp-body has a fine pale rose-red colour; is cylindrical,. 
about the same length as the cell, and furnished with 8 thick ten- 
tacles. The posterior body of the polyp is smooth; the anterior 
body, on the contrary, is furnished with 8 shallow longitudinal 
furrows. The short thick tentacles have a paler colour than the 
polyp-body, and have 4 — 8 short pinnules on each side. 
The aboral surface of the tentacles and the polyp-body has a. 
mother-of-pearl lustre. The oral disc is smooth, slightly arcuate,. 
and has the same colour as the tentacles. The mouth is oblong 
and a little protuberant. Round the mouth there is a white an- 
nulus, from which 8 white ribs radiate, extending to the intervals 
between the tentacles. The basal part, cell, polyp, and tentacles, 
closely covered with spicules. Pinnules, and gullet, non-calcare- 
ous. In the polyp, the spicules placed longitudinally: in the ten- 
tacles, where they extend quite out to the point, they are, placed' 
transversally. The spicules of the polyp and the tentacles distin- 
guish themselves, from those of the basal part and cell, by their 
prominent spicular form. The spicules are colourless. 
