MUSEUM OF COMPARATIVE ZOOLOGY. 47 



Costa: scarcely apparent between the cells. — Off Charleston, South Caro- 

 lina ; L. Agassiz. 



Oculina implicata Agassiz, MS, 1 c.fig. (nnpublished). 



Coralluin forming dense clumps of irregular, crowded, much coalesced 

 branches. Corallites irregularly arranged, numerous, very slightly promi- 

 nent, with nearly level interstices, marked by the scarcely prominent radi- 

 ating costae. Cells smaller than in the two preceding species and less 

 open; columella rudimentary; septa very little exsert. — Oil' Cape Hat- 

 teras, North Carolina ; L. Agassiz. — Beaufort, North Carolina ; A. S. 

 Bickmore. 



Astrangia Danae Agassiz, Smith. Contr., with 6 plates (unpublished) ; Proc. 

 Aincr. Assoc. Vol. II. p. G8, 1849 (non M. Edw. and Haime, 1830). 



Syx. Astrangia astreifonnis Lk.idy (non M. Edw. and Haime). — 



Long Island Sound; L. Agassiz. 



Astrangia astreiformis M. Edw. and Haime. 1850. 

 Charleston, South Carolina ; L. Agassiz. 



Astrangia solitaria Verrill. 



Syx. Caryophyllia solitaria Lk.Si'eur, Journal Phil. Acad. Nat. Sei. I. 

 p. ISO, pi. VIII. fig. 11, 1817. — Ilayti; D. F. YVeinland.— St. Thomas; 

 Dr. G. II. Otis. 



The corallites in this species are distantly scattered, but connected by 

 a thin basal expansion ; septa crowded, strongly denticulate. 



Syndepas Gouldii Lyman, Proc. Bost. Soc. Nat. Ilist. VI. p. 274. 1857.— 

 Cumana, Venezuela, South America ; J. P. Couthouy. 



Phyllangia dispersa Vkrrill. 



Corallites connected by a basal expansion, which is generally thin, but 

 sometimes thickened, irregularly scattered, often one half an inch distant, 

 about one fourth of an inch in diameter, and somewhat less in height. 

 Primary and secondary septa much exsert, with narrow, subentire sum- 

 mits. Columella well developed, trabicular, and rudely papillose. — Pa- 

 nama ; A. Agassiz. 



Cladocora arbuscula M. Edw. and Haime. 1849. 



Sy.v Caryophyllia arbuscula LeSueck, 1820 ; Dana, 1846. Cladocora 

 arbuscula Agassiz, Florida Reefs, with fig. (unpublished). — Florida; L. 

 Agassiz, C Wurdemann. 



Orbicella cavernosa Agassiz, MS. 1. c, fig. (unpublished). 



Syx. Madrepora cavernosa Esp. 1797; Facia cavernosa Okkn, 1815; 

 Aslrea aryus Lamarck, 181G; Orhieetla aryus Dana, 1846; Heiiastrea 

 cavernosa M. Ed\v. 1857. — Florida; L. Agassiz. — Ilayti; D. F. Wein- 

 land. 



The subgenus Orbicella of Dana is almost identical with HeUastrea of 



