branches slightly larger. Branches with fine longitudinal 

 ridges continuous with the septa. Florida, the Bahamas 

 and the West Indies. 



Small, densely branching phaceloid corallum, arising 

 by extratentacular budding. CoralUte about 4 mm in 

 diameter, calices 3 to 3.5 mm. finely dentate septa, 

 usually about 36, palijorm lobes merging with papillose 

 columella. £ow ridges on surface of corallite corres- 

 ponding to septa. 



31. Solenastrea bournoni Edwards and Haime. 

 Described by Vaughan (1919), page 399. 



Coral forms domes or rounded pebbles up to 1 foot 

 in diameter, sometimes with irregular bumps on the 

 surface. Cups, smaller than S. hyades, about 2 mm in 

 diameter and separated by about 1 mm. Low ridges 

 extend from ihe septa part way across the space be- 

 tween cups, which is somewhat blistered. Florida and 

 West Indies. 



Corallum hemispherical or spheroidal, uniformly 

 rounded or with gibbosities. Calices with slightly ele- 

 vated margins, 2 to 2.5 mm diameter, and about half 

 this distance apart. Costae short. Exotheca vesicular. 

 Septa thin, in three cycles, tertiaries alone not reaching 

 columella. Vali thin and rather wide before first two 

 cycles. Septal surfaces finely granulate, imperforate, 

 small columella. 



32. Solenastrea hyades (Dana), (Plates 23, 24). 

 Also Orbicella excelsa Dana, (Verrill 1902). 

 Discussed by Vaughan (1919), page 395. 

 Yellow brown in color. Grows in lobed masses or 



irregular crusts. Cups about 3 mm across with rims 

 slightly raised above the surface. Cups almost touch- 

 ing or separated by as much as 3 mm . Septa do not 



88 



