190 



A. E. Verrill — Comparisons of (Joral Faunm. 



blending with the processes of the latter. The columella is broad, 

 flat, rudely trabecular, covered with rough, blunt, papilliforra spines. 



In sections, the exotheca is very cellular with several rows of 

 arched dissepiments ; the walls are thin and compact ; the endotheca 

 is formed by wide, thin, sloping dissepiments ; septa trabecular and 

 perforated near the columella. 



Diameter of the larger calicles, V to 8™'" ; depth, 2-3™™.- 



Bahia, Brazil, R. Rathbun, 1876. 



Orbicella cavernosa, var. compacta (Rath. MSS.), Vaughan. 

 Vaiighan, op. cit., p. 31, 1901. 



According to Mr. Vaughan, Mr. Rathbun had considered this a 

 distinct species, but Mr. Vaughan, himself, thinks it only a variety 

 of 0. cavernosa, "with dense walls between the corallites." I have 

 not seen the specimens. 



Figure 14. — Meandrina Bvaziliensis. A young specimen, No. 4557. Natural 



size. 



Family Eusmillidse Yer. See p. 113. 



Meandrina Lam., 1801, non 1816. See p. 66. 

 Meandrina Braziliensis (Edw. & Haime) Vaughan. 



Ctenophyllia Braziliensis Edw. & Haime, Monog., Ann. Sci. Nat., x, p. 379, 



pi. vi, fig. 7, 1849. 

 Pectinia Braziliensis Edw. & Haime, Pol. foss. palseoz., p. 57, 1851; Hist. 



Corall., ii, p. 209, 1858. Verrill, these Trans., i, p. 353, 1867. 

 Meandrina Braziliensis Vaughan, op. cit., p. 20, 1901. 



Plate xxxiv, figure 1. 



This elegant species is pedicellate and usually oblong in form, 

 with the secondary collines and valleys mostly transverse and sim- 

 ple. (See p. 186.) The valleys are deep ; the septa are wide, 

 rounded distally, exsert, and nearly entire. 



