502 ZOOPHYTES. 



Corattum vix fragile, spinuloso-asperum, spinulis confer tissimis, vix 

 $'" tongis, paulo compressis et obtusis ; cellis exiguis (i'"), 6-radiatis. 



Incrusting, glomerate; surface tuberculous, with the tubercles sub- 

 conical; polyps pale lilac, tentacles obsolete, disk with 12 short 

 crenations and a white margin. Corallum hardly fragile, spinuloso- 

 asperate; spinules very much crowded, scarcely a line long, a 

 little compressed and obtuse; cells minute (I of a line broad), 6- 

 rayed. 



Plate 46, fig. 2, zoophyte, natural size ; 2 a, part of surface and 

 polyps, enlarged ; 2 b, surface of corallum and cells, enlarged ; 2 c, 

 transverse section, enlarged. 



Feejee Islands at Mathuata, Island of Venua Lebu. Exp. Exp. 



Forms thick tuberculate masses, with the tubercles mostly conical, 

 and like rudimentary branches. The margin of the incrusting coral- 

 lum is rather thin, and sometimes free for an inch or so ; it is a little 

 turned up with the surface below smooth, and containing a few minute 

 cells, which are slightly prominent. 



17. MANOPOKA SCABRICULA. (Dana.} 



M. incrustans, glomerata, gibbosa, tuberculis super fide ; rotundatis ; po- 

 lypis olivaceis, tentaculis obsoktis, disco 12-radiato, 6 alternis promi- 

 nentioribus. Corallum non fragile, undique subtilissime spinuloso- 

 asperum, spinulis vix "' longis, et nunquam lamellosis ; cellis valde 

 exiguis (}-'"), 6-12-radiatis. 



Incrusting, glomerate, gibbous, with the tubercles of the surface 

 rounded ; polyps olive-green, tentacles obsolete ; disk 12-rayed. 

 with 6 alternate rays larger, and most prominent. Corallum rather 

 firm, every where very minutely spinuloso-asperate, spinules scarcely 

 s of a line long, and never lamellate ; cells very minute (| to | of a 

 line broad), 6 to 12-rayed. 



Plate 46, fig. 3, zoophyte, natural size ; 3 a, part of surface with the 

 polyps, enlarged ; 3 b, surface of corallum, enlarged ; 3 c, vertical sec- 

 tion, ditto. 



