564 Prodromus of the 



Lucernaria octoradiata, Sars, Videnskabs Forhand. i 

 Clirist., 1860, it differs by a stalk longer and not fading 

 into body, suckers [anchors] longer and with more dis- 

 tinct tops, ovaries separate ; color dark brown.'' The al- 

 coholic specimens are singularly transparent, and, thanks 

 to my friend's skill and experience, in a remarkably good 

 state of preservation. 



Disc octahedral, umbellaeform, rather abruptly passing 

 into the pedicel ; the arms as broad as the intervals, broadly 

 rounded at the end, their lens^th less than their breadth : 

 pedicel more slender and proportionately longer than in 

 H. auricula, base slightly expanded, a small pit in the mid- 

 dle of the latter ; the four camer;u broadly ovate in trans- 

 verse section, radial diameter to the transverse as 1^ to 1, 

 and one fifth the diameter of the pedicel, from the surface 

 of which they are situated at a distance that is a little 

 more than their greater diameter : tentacles from sLxty 

 to seventy in specimens less than an inch in diameter, very 

 slender ; the globose tip comparatively smaller than in 

 H. auricula, not depressed ; taxis as in H. auricula, but 

 the radial development of the rows apparently less than 

 the transverse, so that the groups are broader than in that 

 species : marginal anchors very prominent, as long as the 

 arms, not reverted, slender, and obliquely trumpet-shaped ; 

 the edge of the trumpet considerably thickened, except at 

 a narrow space on the proximal side, by the development 

 of the adhesive cells ; the centre of the terminal expansion 

 occupied by a single tentacular remnant, about as long as 

 half the breadth of the trumpet, and the globose tip half 

 as thick as that of the tentacles : genital halves not as 

 widely separate as in H. auricula, oblong obovate ; the 

 broader end projecting half-way into the arms ; from forty 

 to forty-five saccules in each band, and uniformly of the 

 same size in all parts of the organ, in four longitudinal rows, 

 the marginal rows shorter than the middle rows, which 



