CO BULLETIN OF THE 



Pocillopora sufYVuticosa Verrill. 



This species forms neat, densely-branclied, rounded clumps, often eight 

 inches in diameter, resembling those of P. bulbosa, with small, irregular, 

 and very proliferous branches. The surface is more strongly echinate 



than that of the latter, with much deeper and less open cells. — Tahiti ; 

 A. Garret. 



Pocillopora ramiculosa Verrill. 



Branches very slender anil elongated, much divided, forming rounded 

 clumps less dense than the preceding, or P. ca>spifosa, to which it is allied. 

 Branchlets very small, often .1 of an inch in diameter, subacute, not 

 crowded. Cells small and deep, nearly circular. Surface evenly and 

 crowdedly echinulate. This species resembles P. acuta in its mode of 

 branching, but is more slender and has much smaller cells than either that 

 species or P. caspitosa. — Kingsmills Islands; A. Garret. 



Pocillopora Stellata Verrill. 



Corallum forming close clumps of long, moderately thick, subparallel 

 branches, which are covered with rising, elongated, subacute, rather distant 

 verruca: : surface crowdedly echinulate. Cells distant, small, and deep with 

 twelve prominent radiating plates, which give them a stellate appearance. 

 This species resembles P. damicornis somewhat in the size of its branches 

 and mode of growth, but is entirely distinct in the structure and small size 

 of the cells. — Zanzibar; C. Cooke, Capt. Ashby. 



Pocillopora damicornis Lamk. 1816. 



Syx. Mailrepora damicornis Espkr. — Singapore; Capt. "W. H. A. 

 Putnam. 



Pocillopora bulbosa Ehr. 1834. — Singapore; Capt. "W. II. A. Putnam. 



Pocillopora capitata Verrill. 



The corallum consists of a cluster of large irregular branches, often an inch 

 or more in diameter, covered with elongated, squarrose, subacute verrucae, 

 .3 of an inch long and .1 in diameter, about .2 of an inch distant. Branch- 

 lets spreading, often rounded and clavate at the end, where the verrucae 

 become obsolete ; surface echinulate, the grains unequally scattered, most 

 prominent immediately around the edges of the cells, which are small, cir- 

 cular, and very deep. This species, although very variable in the form 

 and size of the branches, is very distinct from all the other species known, 

 in the character of the surface and cells. — Acapulco, Mexico; A. Agassiz. 



Published January, 1864. 



