194 Descriptions of New, 



originates on the margins of the cells, and increases to such 

 an extent as to leave the mouth buried at the bottom of a 

 deep cavern. The figures are taken from different parts of 

 the same small colony. 



Lekythopora, n. genus. 



Polyzoary erect, branched ; cells arranged round the 

 branches, more or less flask-shaped or elongated, oblique or 

 erect, and crowded together ; mouth irregularly rounded ; 

 peristome thickened and becoming produced into a long 

 tube, on one side of the orifice of which is a small 

 avicularium ; ovicell forming a projection on the side of the 

 cell below the mouth, the summit deficient in calareous 

 matter, and formed by an oval lens-shaped membrane. 



L. hystrix, n. sp. Fig. 6. 



Of this, the only species, I have procured several speci- 

 mens at the Heads. Mr. Wilson, I believe, has also found 

 it. My specimens form small branching rigid tufts, like 

 some of the small erect Celleporce. The cells are very much 

 crowded together, and, where not too much compressed by 

 their neighbours, may be seen to be flask-shaped; the surface 

 is nearly smooth, or granular and pitted. The primary 

 orifice seems to be nearly circular, but the peristome in all 

 the cells is thickened, and in most is produced into a very 

 long slightly prismatic tube. On one side of the summit of 

 this peristome there is a small horizontal avicularium, with 

 a bluntly triangular mandible opening directly upwards. 

 From this avicularium a minute tube can be traced, extend- 

 ing in a spiral manner downwards. There are also a few 

 large avicularia, with large spatulate mandibles, scattered 

 among the cells. The ovicell is peculiar. It is an enlarge- 

 ment on the front of the cell below the mouth. The summit 

 is not calcareous, but consists of an elliptical convex chitinous 

 membrane. The genus evidently belongs to the Celleporidce. 



