8 MOPSELLAD^. 



branches slender, diverging at an angle of about 45°, obtuse at the 

 ends. Cells rounded, papilliform, rather large, crowded. Colour of 

 all observed vermilion red, with yellow polypes. 

 MopseUa japonica, Verrill, Proc. Essex Inst. 1865, 



Hah. Japan (Sameda). 



Nearly allied to M. coccinea (Isis coccinea, Ellis & Solander) ; but 

 the branehlets do not coalesce, as in those species, and spread much 

 less abruptly. The cells also are considerably larger. 



30. ACABARIA. 



The coral very slender, branched, dichotomous, expanded in a 

 plane ; branches and branehlets very slender, compressed ; with short, 

 swollen internodes, more prominent on the older stems. Bark thin, 

 hard, smooth. Cells short, broad, subcylindrical, truncated, in a 

 single series on each edge of the branches and branehlets, rather close 

 together. Axis calcareous, solid, red, longitudinally grooved ; inter- 

 nodes short, swollen, spongy. 



Acabaria, GraT/, P. Z. S. 1859, p. 484 j Ami.^-Maff. Nat. Hist. 1868, 

 ii. p. 444. 



80. Acabaria divaricata. B.M. 



Coral tree-like. Bark ? Axis very slender, thread-like (not 



g line thick) ; joints elongate, smooth, pale red. Articulations only 

 slightly swollen, spongy ; the branches divaricating, rather rounded 

 at origin. 



Acabaria divaricata, Gray, P. Z. S. 1859, p. 484 ; Ann. ^- Mag. Nat. 

 Hist. 1868, ii. p. 446, f. 3. 



Hah. Australia (Jukes, no. 2787). 



Fig. 1. 



Acabaria divaricata. 



