A. E. Yerrill — BermudUin <ind West Indian Reef Gor<ds. 1 89 



Echinopora concinna Ver., sp. nov. 



Pirate XXIX. Figure 4. 



The coral forms large, thin, foliaeeous, bent fronds, a foot or more 

 across, becoming very thin but lirni at the edges. Both surfaces 

 bear similar calicles in the type. 



The septo-costre are fine, very regular, only slightly raised, and 

 each bears a roAV of regularly spaced, not crowded, small, erect, 

 rough spinules, which give a neat and very regularly spinulose char- 

 acter to the surface. 



The calicles are small, low, verruciform, rather open, with deej) 

 and conspicuous interseptal loculi. The septa are in three cycles, 

 the smallest very thin and narrow. The larger ones are wide, 

 thickened at the walls, a little prominent, angular at the summit, and 

 lacerately toothed. 



The columella is well developed and finely trabecular or spongy. 



Diameter of calicles about 4"""; their height about 1 to 2™'". 



Pelew I., — coll. Ward; Yale Museum and Field Colura. Mus., 

 Chicago. This is allied to E. utriatula Studer, (Monatsb. Kong. 

 Akad. Wiss., Berlin, 1877, p. 644, pi. iii, figs. 10a, h,) from Ncav 

 Britain. 



Family Agaricidae Ver., 1867. 



Fungidce (pm-s) Dana, Zooph., p. 283, 1846. 



Lophoserince (pars) Edw. and Haime, Compt.-rend. , xxix, p. 71, 1849. Hist. 



Corall., iii, p. 35, 1860. 

 Lophoseridre Duncan, Revision, p. Ii6, + Plesiofunyida' (jxirs), p. 133, 1884. 

 Agaricidce Verrill, these Trans., i, p. 542, 1867. 



Corals generally compound, increasing mostly b}^ marginal bud- 

 ding, often thin foliaeeous or frondose, either unifacial or bifacial, 

 sometimes in thick plates or massive. Calicles small and shallow, 

 often without definite solid walls. Septa usually numerous, low, 

 finely seiTulate or subentire, more or less of them continuous, as 

 septo-costfe, with those of adjacent calicles. 



Synapticulje exist between the septa, and in thick or massive forms 

 there are also dissepiments. Outer wall compact, imperforate, usually 

 with slender, serrulate costal striations, seldom echinate. 



Polyps short, scarcely exsert, with small, short, verruciform, blunt 

 or clavate, or often rudimentarv tentacles. 



