426 BULLETIN 103, UNITED STATES NATIONAL MUSEUM. 



TROCHOSERIS MEINZERI, new species. 



Plate 106, figs. 2, 2a, 2b. 



Corallum trochoid, attached by a basal peduncle. Greater diam- 

 eter of calice, 59.5 mm.; lesser diameter, 41 mm.; height, 38.5 mm.; 

 wall solid, finely and closely costate; costae low, equal or alter- 

 nating in size, about 13 in 5 mm. or 26 in 10 mm. Calice, flaring," 

 shallow, slightly excavated. 



Septa very numerous and crowded, about 16 in 5 mm., 32 in 10 

 mm; at the calicular edge, thicker than the. width of the inter- 

 septal spaces. Of the septa about every eighth seems to extend to 

 the axial fossa, and 35 were counted around the fossa, but the num- 

 ber of septa probably exceeds 280. The margins are obscurely, 

 very finely, dentate, subentire. Synapticulae small, numerous, 

 crowded. 



Columella very small, 2 mm. in diameter, in a small fossa; a few 

 papillae are recognizable. 



Locality and geologic, occurrence. — Cuba, station 7522, Mogote Peak, 

 0.5 mile east of east boundary of United States Naval Reservation, 

 Guantanamo, south side of peak, altitude about 375 feet a. t., collected 

 by O. E. Meinzer (type). 



Panama, station 6587, Tonosi, collected by D. F. MacDonald. 



Type.— No. 325228, U.S.N.M. 



The only other species of Trochoseris described from the American 

 Tertiary formations is T. catadupensis Vaughan * from the Eocene 

 at Catadupa, Jamaica. This is a much smaller species than T. 

 meinzeri and does not appear closely related. 



The specimen obtained by Doctor MacDonald at Tonosi, Panama, 

 is broken and poor, but the identification of it with the Cuban 

 specimen seems certain. 



Genus AGARICIA Lamarck. 



1801. Agaricia Lamarck, Syst. Anim. sans Vert., p. 373. 



1905. Agaricia Vaughan, Science, n. s., vol. 21, p. 984. 



1917. Agaricia Vaughan, Carnegie Inst. Washington Pub. 213, p. 140. ' 



Type-species. — Madrepora undata Ellis and Solander. 



AGARICIA AGARICITES (Linnaeus). 



1758. Madrepora agaricites Linnaeus, Syst. Nat., ed. 10, p. 795. 



1901. Agaricia agaricites Vaughan, Geol. fteichs. Mus. Leiden Samml., ser. 2 



vol. 2, p. 64. 



1902. Agaricia agarcites Vekrill, Conn. Acad. Arts and Sci. Trans., vol. 11, p. 



146, pi. 26, figs. 2, 3; pi. 27, figs. 1, 2, 2a, 3, 3a, 5, 6, 6a, 7, 7a. 



1915. Agaricia agaricites Vaughan, Washington Acad. Sci. Journ., vol. 5, p. 596. 



1916. Agaricia agaricites Vaughan, Carnegie Inst. Washington Yearbook No. 14, 



p. 228. 



Locality and geologic occurrence. — Canal Zone, station 6039, Pleis- 

 tocene, Mount Hope, collected by D. F. MacDonald, abundant. 



i Mus. Comp. Zool. Bull., vol. 34, p. 242, pi. 30, figs. 5, 6, 1899. 



