^-1. M Verrill — BermucUan and West Indian Reef Corah. 101 



The costae are thick, not very high, meeting or inosculating 

 between the calicles, and covered with a single row of small, slender, 

 rough spinules. The columella is well developed, formed of con- 

 torted trabecular processes, and often having a small i)it in the cen- 

 ter and a few erect spinules, similar to the slender, rough, paliform 

 teeth that often (but not regularly) stand at the base of some of the 

 J 2 larger septa. 



In sections the walls are very thick and nearly solid. The endo- 

 thecal dissepiments are small, thin, irreguhxrly convex or tlat above. 

 The calicles are not filled up below, or only slightly encroached upon, 

 by a deposit between some of the septa. Diameter of the calicles 3 

 to 3.5""" ; distance between them mostly 2 to 4'""', often more. 



Florida Reefs (Maj. E. B. Hunt), Yale Museum, No. O.*^. Near 

 Nassau, N. P. (coll. R P. Whittield), Amer. Mus., New York. 



This has the general appearance of 0. annidarls, but with calicles 

 larger than usual and decidedly farther apart. The Avails and 

 exotheca are much thicker and more solid, and the endothecal cells 

 are fewer and less regular. The sharply spinulose and hispid septa 

 and costfe are also characteristic. The exothecal deposits are nearly 

 as solid as in Ocnllna. 



A Nassau specimen, in the American Museum, is an irregular 

 rounded mass, about five inches in diameter and three to four thick, 

 with a lobulated surface. The coral is heavy and solid ; the surface 

 of the coenenchyma is spinulose ; the costte well developed. The 

 ealicles are more variable in size than in the type, in some places 

 being one-half smaller and closely crowded. Coll. R. P. Whitfield. 



Orbicella Braziliana Ver.. nom. iiov. 



Orbicelln cavernosa Quelch, Voy. ChalL, xvi, p. 106, 1886 (non Lam.). 



I propose this name for the form taken by the Challenger, oft" 

 Barra Grande, Brazil, in 30 fathoms. 



According to Quelch it forms rounded masses two feet in diame- 

 ter. Its exotheca is so vesicular as to partly hide the costte ; the 

 septa are uniformly thickened. As he refers it to cavernosa, it 

 should have large calicles with four cycles of septa. Since nearly 

 all the other Brazilian corals are distinct from the West Indian, the 

 locality and depth where this Avas found, as well as the characters 

 mentioned, indicate a species distinct from the common West Indian 

 reef species. 



