POLYPS AND COEALS. 93 



The texture is less firm, and the coral is more cellular 

 and lighter than in P. coespitosa. 



One specimen has a bulb similar to those made by 

 Harjpalocarcinus marsupialis, but belonging, probably, to 

 another species of the same genus, since it diflers consid- 

 erably in form. The aperture is closed, except a few- 

 small openings above. A similar bulb occurs on P. elon- 

 gata Dana, from Ceylon. 



PociLLiPORA DANse Yerrill. 



Pocillopora favosa (pars) Dana, Zooph., p. 528, Plate 50, fig. 1 {non 

 Ehr. ; Edw, andHaime). 



Pocillopora Z>a?ice Verrill, Bulletin Mus. Comp. Zoology, p. 59, 1864. 



Under the name of P. favosa, Prof. Dana included 

 specimens both from the Feejees and Hawaiian Islands. 

 A careful examination of his original specimens, and com- 

 parisons with large series more recently collected, have 

 convinced me that the specimens from these two locali- 

 ties really belong to distinct species, both of which 

 appear to difl'er from the typical specimens described by 

 Ehrenberg from the Red Sea. The Feejee species may 

 be distinguished by the following characters. 



Branches moderately stout, variable both in size and 

 length, quite irregular, the ends usually enlarged, often 

 compressed and lobed, the summits very cellular, usually 

 with subobsolete verrucas, but the younger branches 

 often terminated by prominent ones. Sides of the branch- 

 es with rather large, prominent, obtuse, irregularly scat- 

 tered verrucas, which rise obliquely and are scarcely 

 appressed. Coenenchyma compact, with very fine spin- 

 lule-like grains evenly scattered over the surface. Lat- 

 eral cells between the verrucae rather small, circular, with 

 the septa and columella scarcely distinct, though in some 

 cells near the base twelve very narrow septa are visible. 

 Texture rather firm. 



Feejee Islands. J. D. Dana. U. S. Expl. Expedition. 



PociLLiPORA ASPERA Vcrrill, sp. nov. 



Pocillopora favosa (pars) Dana, loc. cit. (iion Ehrenherg). 

 Pocillopora pUcata (pars) Dana, op. cit., p. 534. 



