POLYPS AND CORALS. 53 



Cnhrina (pars) Ehr., Corall. i-otlieu Meeres, p. 40, 1834. 



Cereus (pars) Eclw. aud Haime, Coralliaires, Vol. I, p. 263, 1857. 



Sagartia (pars) Gosse, Actinologia Britanuica, p. 25 aud 123, 1860. 



Cereus Verrill, Bulletin Mus. Comp. ZooL, p. 58, 1864; Revision 

 Polyps E. Coast U. S., p. 24, 1864; Review of the Corals and Polyps 

 of W. Coast, in Trans. Connecticut Academy, Vol. I, p. 480, 1869. 



Column very changeable in form, highly contractile, its 

 surface uninterrupted by a fold below the margin ; its 

 upper portion provided with contractile suckers. Cin- 

 clid«, or lateral pores scattered, well developed, but in- 

 conspicuous, emitting many loDg, thread-like acontia. 

 Disk broad, often undulate at the edge. Tentacles very 

 numerous, conical, the inner ones largest, scattered on 

 the disk, outer ones small and crowded. 



The reasons for restricting this name to the group hav- 

 ing C. hellis for its type have been given by me in the 

 works quoted above. 



Cereus Stimpsonii Yerrill, sp. no v. 



Disk broad, the margin not undulate. The inner ten- 

 tacles much the largest, conical, rather short, pointed, 

 forming two rows of fourteen each ; the rows near to- 

 gether but the tentacles distant in each. The inner row 

 placed a little more than half way from the mouth to the 

 margin. Outer tentacles crowded in many indistinct 

 rows, much smaller, short and pointed. Mouth narrow, 

 elongated, with many lateral folds upon the large lips. 

 Acontia long, thrown out profusely in an alcoholic speci- 

 men. Color of disk varied with alternating radiating 

 streaks of darker and lighter lead-color, brownish yellow, 

 and white ; column colored in a similar manner. Ten- 

 tacles lead-color, the larger ones tipped with vermilion. 

 Diameter of disk, in expansion, 1.25 inches ; longest ten- 

 tacles .25 of an inch in length. 



False Bay, Cape of Good Hope, on rocks in twenty 

 fathoms. Dr. Wm. Stimpson. 



The same or a similar species occurs abundantly on 

 rocks in the littoral zone. 



This species appears to be closely allied to C hellis 



