36. Asirangia soliiaria (Lesueur). 

 Described by Vaughan (1901), page 298. 



Cups single, growing attached to base of larger corals 

 or to dead rock, sometimes with thin encrustation con- 

 necting bases of several cups. Cups, tubular about 6 

 mm tall and 4 mm in diameter. Most of septa with 

 toothed edges. Septa prolonged as low ridges down 

 side of cup. Not strictly a reef coral, but found in reefs 

 from Bermuda to Brazil. 



Solitary or phaceloid, separate corallites sometimes 

 joined by thin encrustations of peritheca. Average 

 height of corallite 5-6 mm, diameter 5 mm. Low, flat, 

 ecfual costae, densely granulate, distinct down to base 

 of corallite. 7our cycles of septa, 4th incomplete ist 

 and second reach columella, third bend in to join second 

 and fourth bend and fuse with third. T^one of septa 

 very exsert, all denticulate, less marked in first and 

 second cycles. Columella weak and spongy. 



37. Oculina diffusa Lamarck, (Plate 28) . 

 Described by Verrill (1902), page 175. 



Consists of close bushy branches bearing shallow 

 cups, each about 3.5 mm across. Branches less than 

 10 mm thick, usually. Very abundant, Florida, Ber- 

 muda, the Bahamas and the West Indies. Not Brazil. 



7orms densely ramose colony by alternate extraten- 

 tacular building, no axial corallite. Calices 3-4 mm in 

 diameter, sometimes circumvallate, septa usually 24, 

 rather narrow, slightly exsert. "Well developed colum- 

 ella. 



38. Oculina valenciennesi Edwards and Haime. 

 Described by Verrill (1902), page 176. 



Larger and more straggling compared to O. diffusa. 

 Cups slightly sunken with groove surrounding them, 



9i 



