Order Lucernarice. 561 



muscular cords, no pit in the base ; the four camera) trans- 

 versely ovate, connected with each other at the base by 

 anastomosing channels, and slightly constricted above, 

 just before opening into the cavity of the umbella ; their 

 greater diameter, trending radially, a little less than one 

 third that of the pedicel ; the space between them, at the 

 axis of the pedicel, nearly one third the diameter of the 

 latter ; the space between every two, about double the 

 breadth of a camera, and the distance of each from the 

 paries of the pedicel one third its distance from the axis : 

 tentacles from one hundred to one hundred and twenty, 

 slender, their length equal to one fourth the diameter of 

 the umbella ; the globular tip slightly depressed at the end, 

 its diameter from two to two and a half times greater than 

 that of the cylindrical part of the tentacle : anchors re- 

 verted toward the pedicel ; very large, oval or faboeform ; 

 each one attached to the margin by a short, broad stem, 

 half as long and half as broad as itself; furrowed longitu- 

 dinally on the proximal side like a coffee grain, which it 

 resembles ; length nearly equal to the diameter of the ped- 

 icel, those opposite the partitions usually longer than the 

 others, breadth half as great ; the original tentacular na- 

 ture almost totally obscured by the enormous develop- 

 ment of the adhesive cells in the outer wall, the head of 

 the tentacle represented by a small group of lasso-cells 

 near the distal end in a clear space, which has the decep- 

 tive appearance of being an opening; the internal cavity 

 large, equalling from one third to one half the diameter of 

 the whole organ ; in unusually large individuals they are 

 deeply wrinkled in every direction : the genitals consist 

 each of two distinct bands, in the shape of broadly obtuse 

 triangles, whose base, trending in a direct line to the arms, 

 is twice as long as its height, and the apical obtuse angle 

 projects into the area opposite the corner of the mouth ; 

 about one hundred and twenty-five saccules in each band, 



JOURNAL B. S. N. H. 71 



