G. AGLAOPHENIA. 73 



HOOKED. 



1. Aglaophenia angulosa. Stem angular, and 

 slightly flexuous ; branches dispersed, and pinnated ; 

 divisions opposite ; cells in the form of a cupola, 

 with an appendage below, rather long, and arched ; 

 height three decimetres. 



Australasia. 



SPIKED. 



2. Aglaophenia spicata. Stem cylindrical, a little 

 cretaceous, and upright ; branches alternate, pinnated, 

 numerous, straight, and in the form of thorns ; cells 

 Ccirapanulated, with the lower appendage like a calix ; 

 height from two to three decimetres. 



Indian Ocean. 



FLEXUOUS. 



3. Aglaofhv.^ia flexuosa. Stem cylindrical, flexu- 

 ous, and branching ; branches curved above, as well as 

 the pinules ; cells toothed, and longer than the lower 

 appendage ; height from twelve to fifteen centimetres ; 

 colour, a bright fawn. 



Eastern Ocean. 



ARCHED. 



4. Aglaophenia arcuata. Stem branching, and 

 dichotomous ; branches arched, but not numerous ; 

 cells placed between two appendages ; the lower one 

 formed like an elbow, with two opposite teeth, 

 placed in the angle of the bend ; the upper very short : 

 colour, a deep but bright fawn ; height from twelve to 

 fifteen centimetres. — Plate 4. fig. 4. a. B. 



Western Ocean. 

 Cor. K 



