498 BULLETIN 103, UNITED STATES NATIONAL MUSEUM. 



Locality and geologic occurrence. — Canal Zone, station 6020c, in the 

 Culebra formation at Las Cascadas, collected by T. W. Vaughan and 

 D. F. MacDonald. 



Anguilla, station 6967, Crocus Bay, collected by T. W. Vaughan. 



Antigua, station 6854, Rifle Butts, Antigua formation, collected by 

 T. W. Vaughan. 



Type.— No, 325072, U.S.N.M. (pi. 146, figs. 6, 6a, 6&). 



Paratypes.—No. 335074, U.S.N.M. (3 specimens). 



This species is one of those that is intermediate between Pontes 

 and Goniopora. As there are short tertiary septa within the wall, 

 according to Bernard's treatment of such forms, it is referred to 

 Goniopora. 



The types are from Las Cascadas, Canal Zone. The calices of 

 the specimens from Anguilla are not so well preserved as those of the 

 cotypes, but the identifications seem reasonably certain, as there is 

 agreement in all general characters and in the observed detail. 



Genus PORITES Link. 



1807. Pontes Link, Beschreibuugen der Naturaliens Sammlungen, Rostock, p. 



162. 

 1918. Pontes Vaughan, Carnegie Inst. Washington Pub. 213, p. 138. 



Type-species. — Madrepora pontes Pallas. 



PORITES PORITES (Pallas). 



1766. Madrepora pontes Pallas (part), Elench. Zooph., p. 324. 



1901. Pontes -pontes forma clavaria Vaughan, IT. S. Fish Com. Bull, for 1900, 



vol. 2, p. 316, pi. 29; pi. 31, fig. 2. 



1902. Pontes pontes Vaughan, Biol. Soc. Washington Proc, vol. 15, pp. 56-58 



(with references to literature and history of the name) . 

 1909. Pontes pontes var., Vaughan, Carnegie Inst. Washington Yearbook No. 7, 



p. 135. 

 1912. Pontes clavaria Vaughan, Carnegie Inst. Washington Yearbook No. 10, pp. 



148, 152, 156, pi. 4, fig. 4c; pi. 6, figs. 3, 4. 



1915. Pontes clavaria Vaughan, Washington Acad. Sci. Journ., vol. 5, p. 597. 



1916. Porites clavaria Vaughan, Nat. Acad. Sci. Proc, vol. 2, pp. 95, 98. 



1916. Porites clavaria Vaughan, Carnegie Inst. Washington Yearbook No. 14, p. 

 228. 



This is one of the species of corals to which most attention was 

 given during my studies of the Floridian and Bahamian reef corals, 

 and it is referred to in most of my reports in Yearbooks No. 7-14, 

 inclusive, of the Carnegie Institution of Washington, usually as 

 Porites clavaria, because that is the more generally known name. 



Localities and geologic occurrence. — Recent throughout the coral- 

 reef areas of the West Indies, the eastern side of Central America, 

 Florida, and the Bermudas. 



Pleistocene, in the elevated West Indian reefs. 



