128 NATURAL HISTORY OP 



The denticles (calycles) are of a cylindrical, bell-shaped 

 form." — E. and S. 



The pinnje themselves bear short branchlets, which 

 are usually bifid. There are two nematophores above 

 and one below each calycle. There are from one to 

 three calycles to each internode. 



10. P. CORNUCOPIA, Hincks. 



Hab. : Captone, Ilfracombe (iIiucZ:s). Height f in. 



This was described by Mr. Hincks in the A. and M. 

 of Nat. Hist. (4), x. 389. The plumes rise at intervals 

 from a creeping stolon, and are regularly jointed, 

 giving off pinnae at each joint, which are either oppo- 

 site or alternate. The calycles are cup-shaped, and 

 separated by two joints. The sarcothecEe are placed 

 one on each side of the calycle above and one below it, 

 and one on eacK of the internodes of the pinnae. 



The female gonophores are horn-shaped, with the 

 curve towards the calycles, from the base of which 

 they arise. 



Sub-division: STATOPLEA PEYLACTOCARPJ. 



Genus III. AGLAOFUEmA, Lamouroiix {in part). 



Shoots plumose, simple or branched, rooted by a fili- 

 form stolon. Hydrothecce cup-shaped or tubulous, 

 usually with an intrathecal ridge. Neviatopkores fixed, 

 two lateral and one mesial in connection with each 

 calycle. Gonothecce collected in corbulge. — Alhnan. 



The corhula i-eferred to is " a pinna modified so as to 

 form a protective envelope for the gonothecee." See 

 Plate X. fig. 2. 



1. A. PLUMA, Lamarck. Plate IX. fig. 5. 



Sertularia pluma {Linn., Pall., Esper., Lister, E.and 



