NO. 1 DURHAM, BARNARD: EASTERN PACIFIC STONY CORALS 37 



nounced septal ledges, and by the lack of any great differentiation in 

 the size of alternate septa. The calices of L. gardineri as figured by 

 Gardiner (Fauna and Geog. Maldive and Laccadive Arch., vol. 2, supp. 

 1, pi. 92, fig. 23, 1905), are decidedly protuberant. The corallum of 

 Folioseris papyracea figured by Rehberg (Abh. Geb. Naturwiss, Verein 

 Hamburg, vol. 12, pt. 1, pi. 2, fig. 8; pi. 4, fig. 2, 1892) and placed in 

 the synomymy of L. gardineri by van der Horst, has some superficial 

 calices, and septal ledges are mentioned as occurring. However, the septa 

 alternate in size. 



The specimen at hand is somewhat encrusted with sand. Being very 

 small, it is probably young and the adult form of the species may ap- 

 proach L. gardineri. 



Dimensions of holotype: Height 25 mm (two broken pieces), 

 length of a branch 7 mm, width of same branch 3 mm. 



Holotype: AHF no. 1. 



Type locality: Sta. 113-33, Bahia Honda, Panama, 5-8 fms. 



Material examined: Sta. 113-33 (1). Bottom sample 518 (3 

 frags.). Cat. nos. 11.1-11.2. 



Distribution: The type locality and La Plata Island, Ecuador, 

 45-55 fms. 



Genus PAVONA Lamarck 



Pavona Lamarck (1801), Syst. Anim. sans Vert., p. 372. 

 Genotype; Pavona cristata Lamarck. 



Subgenus Pavona s.s. 



Pavona (Pavona) clivosa Verrill 

 Plate 2, fig. 12 



Pavonia clivosa Verrill (1869), Proc. Boston Soc. Nat. Hist., vol. 12, 

 pp. 395-396; (1870), Trans. Conn. Acad. Arts Sci., vol. 1, pp. 

 544-545, pi. 9, fig. 8. 

 Verrill's 1870 description is as follows: 



"Corallum thick and massive, lobed, or rising into very large rounded 

 eminences or oblong ridges, thickly covered with stellate cells, which are 

 smaller and nearer together than in the preceding species [Pavona 

 gigantea]. Cells mostly uniformly scattered, often closely crowded and 

 contiguous on the summits of the prominences, usually separated on other 

 parts at distances about equal to their own diameter. Septa generally 

 from sixteen to twenty-four, alternately larger and smaller; the larger 



