NO. 1 DURHAM, BARNARD: EASTERN PACIFIC STONY CORALS 105 



Type locality: Sta. 12, 1932, west of South Seymour Island, the 

 Galapagos Islands, no bathymetric data. 



Material examined: 26 clusters from the type locality. Cat. no. 

 68.1. 



Genus TUBASTREA Lesson 



Tubastrea Lesson (1834), in Belanger, Voy. Indes-Orient., p. 515. 

 Coenopsammia Milne Edwards and Haime (1848), Ann. Sci. Nat., ser. 



3, vol. 10, pp. 106-107. 



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

 p. 392; (1870), Trans. Conn. Acad. Arts Sci., vol. 1, p. 509. 

 Genotype: of Tubastrea and Coenopsammia, T. coccinnea Lesson, 

 {Lobophyllia aurea Quoy and Gaimard) ; of Astropsammia, A. peder- 

 senii Verrill. 



Tubastrea tenuilamellosa (Milne Edwards and Haime) 



Plate 12, fig. 50d 



Coenopsammia tenuilamellosa Milne Edwards and Haime (1848), Ann. 



Sci. Nat., ser. 3, vol. 10, p. 110, pi. 1, fig. 11. 

 Astropsammia Pedersenii Verrill (1869), Proc. Boston Soc. Nat. Hist., 



vol. 12, p. 392; (1870), Trans. Conn. Acad. Arts Sci., vol. .1, 



p. 509. 

 Dendrophyllia tenuila?nellosa Verrill (1870), Trans. Conn. Acad. Arts 



Sci., vol. 1, p. 508. 

 Tubastrea tenuilamellosa (Milne Edwards and Haime), Durham 



(1947), Geol. Soc. Am., Mem. 20, pp. 38-39, pi. 11, figs. 1, 2, 



4, 9; pi. 12, figs. 6, 7. 



The deep-water specimen from Sta. 155-34 (50-60 fms), has calices 

 varying from 4-8 mm in diameter and rising from 1-7 mm above the 

 general mass of the corallum. In many respects it resembles the type of 

 Astropsammia pedersenii Verrill, except that it is obviously not a worn 

 specimen. The columella in some calices of this specimen is quite evident, 

 in others it is almost obsolete; in all cases it is composed of interlacing 

 trabeculae from the inner ends of the septa. 



In the material available there appear to be specimens representing 

 all gradations in size and projection of calices. The specimens from Sta- 

 tion 31-33 have calices 10-12 mm in diameter and projecting as much 

 as 13-17 mm from the corallum mass. Material from Station 155-34 

 has calices 5-7 mm in diameter and projecting 1-3 mm from the coen- 

 enchyma. 



