542 Verrill, Notes on Hadiata. 



Fungia elegans Verriii. 



Faiigia elegans Verrill, Araer. Journal of Science, 2d ser, xlix, p. 100, Jan. 1870. 



Plate X, figures 1 and 2, 

 Corallurn, Avlien young, regular and round, often becoming slightly 

 oval ; when adult, usually more or less angular, the edge plicated, 

 forming six to twelve lobes. The upper surface becomes very convex 

 in mature specimens and the lower surface deeply concave and 

 covered mth very numerous, fine, subequal, elevated costse, which are 

 finely dentate on the outer half, becoming nearly entire and very faint 

 toward the center, whicli usually shows the scar, where it was at- 

 tached when young. Septa thick and rather crowded, very unequal, 

 the six primaries very prominent and thick at the inner end; those of 

 succeeding cycles successively shorter and less elevated. Edges of 

 septa unevenly crenulate, or finely dentate. Columella slightly de- 

 veloped, loosely spongy ; median fosette small, narrow, elongated; the 

 two septa in the direction of its longer diameter much less elevated 

 and thinner than the rest. Trabiculae stout, conspicuous, often coales- 

 cing into continuous transverse plates. 



The smallest unattached specimens are '90 of an inch broad by '35 

 high; ordinary specimens are about 190 broad by 1*10 high; some 

 of the largest 2-25 by ri5 ; 2-35 by 1-20 ; 2*40 by 1-25 ; 2-55 by I'll. 



Near La Paz, — J. Pedersen. 



Of this small but very interesting species Capt. Pedersen has sent 

 more than one hundred specimens, all of which came from a single 

 locality. 



Family, Agaricidje Verrill. 



Fungidce (pars) Dana, Zoophytes U. S. Expl. Exp., p. 283, 1846. 



Lophoserince Edw. and Haime, Comptes-rendus de I'Acad. des Sci,, xxix, p. 71, 1849. 



LophoserincB (pars) Edw. and Haime, Ann. des Sci. nat., 3^ ser., xv, p. 101, 1851; 



Coralliaires, iii, p. 35, 1860. 

 LopJwseridce Verrill, Proc. Essex Inst., iv, p. 146, 1865. 



Coralla simple or compound. Wall, and basal disk of compound 

 species, compact, imperforate, costate. Costfe generally nearly equal, 

 seldom echinidate or dentate. Septa compact, usually few, low, pro- 

 longed outwardly, extending between adjacent cells. In compound 

 species the coral is generally encrusting, or thin and foliaceous, the 

 polyps covering one or both sides of the foliiie, and budding chiefly 

 around the margins, from the prolonged septal systems. The cells are 

 not separated by definite walls. In some genera, however, like Pavo- 

 nici and Siderastrce't, the coral forms more or less thickened plates, or 

 even globular masses, while the interseptal chambers have transverse 

 dissepiments, as well as trabiculse. 



