NO. 1 DURHAM, BARNARD: EASTERN PACIFIC STONY CORALS 29 



Family Thamnasteriidae 



Genus PSAMMOGORA Dana 



Psammocora Dana (1846), U.S. Expl. Exped., Zooph., pp .344-345. 

 Genotype: Pavona obtusangula Lamarck. 



Subgenus Stephanaria Verrill 



Stephanocora Verrill (1866), Proc. Boston Soc. Nat. Hist., vol. 10, 



p. 330, non Ehrenberg (1834). 

 Stephanaria Verrill (1867), Trans. Conn. Acad. Arts Sci., vol. 1, p. 



340; Vaughan (1907), U.S. Nat. Mus., Bull. 59, p. 142. 

 SuBGENOTYPE : Stephanocora stellata Verrill. 



Psammocora (Stephanaria) brighami (Vaughan) 



Plate 2, figs. 7a, b 



Stephanaria brighami Vaughan (1907), U.S. Nat. Mus., Bull. 59, pp. 

 143-144, pi. 43, figs. 4, 4a, 5. 



Vaughan notes well the differences between this species and P. 

 {Stephanaria) stellata. Occasional calices of both species approach those 

 of the other but no definite intergradation is found. 



This species was recorded previously only from the type locality, 

 Kahana, Oahu, at depths of 3-6 ft. 



Hypotypc: Cat. no. 7.1 (Sta. 1111-40). 



Material examined: Stas. 1111-40 (40), 1738-49 (3). Cat. nos. 

 7.1-7.2. 



Distribution : San Lorenzo Channel, west of Espiritu Santo Island, 

 Gulf of California, depth 6-13 fms. 



Psammocora (Stephanaria) stellata (Verrill) 

 Plate 2, fig. 8 



Stephanocora stellata Verrill (1866), Proc. Boston Soc. Nat. Hist., vol. 



10, p. 330. 

 Stephanaria stellata Verrill (1870), Trans. Conn. Acad. Arts Sci., vol. 



1, pp. 545-546, pi. 9, figs. 4, 4a; Vaughan (1907), U.S. Nat. 



Mus., Bull. 59, pp. 142-143, pi. 43, figs. 2, 2a, 2b, 3, 3a. 

 Psammocora {Stephanaria) stellata (Verrill), Durham (1947), Geol. 



Soc. Am., Mem. 20, p. 19, pi. 8, figs. 1, 2; pi. 13, fig. 1, 



