A. E. Verrill — Bennxdlan and West Indian Reef Corals. 107 



small, lamcllose, sometimes with a minute central tubercle. The 

 calicles var^^ considerably in si^^e, beinj^ smaller and more crowded, 

 sometimes angular, at the bases of the lobes. The distance between 

 them is also variable. The diameter of the calicles varies from 1.75 

 to 2.5""", but most of them are about 2 to 2.5™°>. 



Throughout the West Indies, but not recorded from Florida nor 

 from the Bermudas. Fossil in the elevated reefs of many of the 

 West Indies. 



Cyphastraea nodvilosa Ver., sp. nov. 



Plate XXXI. Figures 2, 2o, 2ft. 



The coral forms small nodular masses, about 55 to 65'""' in diameter 

 and 35 to 45"'"^ high, consisting of numerous small, rounded or short, 

 subclavate nodules, rising like incipient branches from a common 

 thick, irregular base. It is compact and heavy, with small circular 

 calicles. 



The corallites, where not much crowded, project distinctly above 

 the cffnenchyma and have a rather thin rim and feebly costate wall. 

 In other parts they are not at all raised and the calicles may be 

 immersed in the ccenenchyma, which is ^ery compact, Avith the sur- 

 face sometimes covered with low rounded granules, in radial costal 

 lines, but in other parts it is often nearly smooth. 



The calicles are small, but rather open and deep, owing to the 

 narrow septa. They are mostly from 1.25 to 1.50™™ in diameter, and 

 are often separated by spaces of 1 to 2"'"'. , 



The septa are in three cycles, consisting of 12 narrow, subequal 

 ones, of the two first cycles, alternating with 12 very narrow or 

 rudimentary ones of the third cycle. These last are often lacking, 

 or invisible without a lens, in some of the systems. 



The larger septa are narrow, usually much exsert, with an obtuse, 

 serrulate apex, and a perpendicular inner edge, Avhich is finely ser- 

 rulate or subentire ; their proximal portion is very thin and denticu- 

 late. The paliform tooth is very small, but distinct, papilliform. 

 The columella is small, minutely trabecular with one or more minute 

 papillae on the sui'face. 



In sections the walls and exotheca are often entirely compact, 

 especially near the surface, but in other parts there may be exothecal 

 cellules ; the septa are thin and divided into numerous fine tra- 

 beculae ; the dissepiments are numerous, very thin, nearly horizontal, 

 often subtabular ; columella loosely trabecular. 



Bahamas, — R. P. Whitfield; three specimens, No. 542, Amer. Mus. 



