42 BULLETIN OF THE 



Madrepora plantaginea Lamarck (non Dana). 



Syx. M. acervala Dana. — Singapore; Capt. W. II. A. Putnam. 



Madrepora cerealis Dana. — Singapore; Capt. W. II. A. Putnam. 



Madrepora nasuta Dana. — Tahiti; J. I). Dana, A. Garret. 



Madrepora globiccps Dana. — Tahiti; J. D. Dana, A. Garret. 



Madrepora rnillepora Dana/ — Singapore ; Capt. W. II. A. Putnam. 



Madrepora eonvexa Dana. W 



Syx. Madrepora corymbosa Daxa (non Lamk.), the young. — Singa- 

 pore; Capt. \V. II. A. Putnam. 



Madrepora surculosa Dana. — Singapore ; Capt. W. II. A. Putnam. 



Madrepora turbinata Dana. 



Syx. Madrepora surculosa, var. turbinata Daxa. 



Tliis species is perfectly distinct from M. surculosa. Unbleached speci- 

 mens an' delicate rose-colored. — Tahiti ; J. D. Dana, A. Garret. 



Madrepora appressa Dana. 



Syx. Hcteropora appressa Fair. 1834; f IF. imbricafa Euu. ; Madre- 

 pora plantaginea Daxa (non Lamarck); f M. echidncea Daxa. • — Singa- 

 pore; Capt. \Y. II. A. Putnam. 



Madrepora paxilligera Dana. — Tahiti; A. Garret 



Madrepora cytherea Dana. — Tahiti ; J. D. Dana, A. Garret. 



Madrepora spicifera Daxa. — Singapore ; Capt. W. II. A. Putnam. 



Madrepora palmata Lamarck. 



Syx. Madrepora perampla Horn, Proc. Phil. Acad. Nat. Sci. 1860, 

 p. 435. — Florida and West Indies; L. Agassiz, D. P. Woodbury. 



Porites furcata Lamarck. — Florida and West Indies; L. Agassiz. 



Poritos clavaria Lamarck. — Florida and West Indies; L. Agassiz.. 



Pcritss compressa Dana. — Sandwich Islands; A. Garret. 



Porites mordax Dana. — Sandwich Islands ; A. Garret. 



Porites lobata Dana. — Sandwich Islands ; A. Garret. 



Porites astroeoides Lamarck.— Florida and West Indies; L. Agassiz. 



Synartea Verrill. 

 Corallnm irregularlj branched or glomerate. Cells without distinct walls, 

 septa rudimentary; six prominent paliform lobes surround the central 

 cavity, which lias a rudimentary or very small, tubercular columella ; out- 

 side of the pali are other similar points, or granulations, scattered between 

 ceils, which are nol distinctly circumscribed, but often separated for 

 wfine distance by a porous ecenenchyma. 



Tljis genus includes Porites erosa, P. informis, and P. monticulosa of 



