REPORT ON MATERIALS FROM THE BORINGS AT FUNAFUTI ATOLL. 325 



Genus Cyphastr.^a, M.-Ed. and H. 



This genus occurs very sparingly in the Main Boring between G54 and 1108 feet, 

 one of the casts resembles C. Savignyi, M.-Ed. and H. At the depth of 82 feet in 

 the Lagoon Boring a fragment has likewise been found. A recent species is recorded 

 by Whitelegge* from the passage between the islets of the reef at Funafuti. 



Genus Galaxea, Oken. 



The genus is sparsely represented in the Main Boring between 765 and 950 feet. 

 The casts indicate two species, one allied to G. Lamarcki, M.-Edw. and H., the other 

 to G. EUisi, M.-Edw. and H. According to HEDLEYf this genus has not been met 

 with as recent at Funafuti. 



In addition to the above, the cores of the lower part of the Main Boring contain 



numerous casts of Astrsean corals not sufficiently preserved for their generic characters 



to be distinguished. 



Madreporaria Fongida. 



Genus Siderastr^a, Blainville. 



This genus has only been met with in the lower part of the Main Boring, between 

 1019 and 1110 feet. No recent form has been observed at Funafuti. 



Genus Fungia, Dana, 



This genus is represented by casts and fragments in the Main, First, and Lagoon 

 Borings. It appears in the Main Boring at the depth of 100 feet, and again at 

 578 feet ; below this depth to near the base of the core it is not infrequent, but the 

 specimens are all too imperfect for specific determination. According to J. S. Gardiner;]; 

 dead specimens of the genus are not uncommon on the beaches of the outer islands at 

 Funafuti, indicating that it must flourish close outside the reef 



Genus Halomitra, Dana. 



An imperfect cast from a depth of 530 feet in the Main Boring probably belongs to 



this genus. J. S. Gardiner§ describes a new species of the genus from the lagoon 



shoals at Funafuti. 



Genus Cycloseris, M.-Ed. and H. 



Casts of this genus are not infrequent between 716-766 feet in the Main Boring, 



below this level they occur at long intervals to nearly the bottom of the boring. The 



forms are closely allied to C. cyclolites, Lam. The genus has not been noticed in the 



recent forms of Funafuti. 



Genus Psammocora, Dana. 



This genus has been found in the First Boring and nearly at the base of the Main 



Boring. J. S. Gardiner] | describes several recent species from the lagoon shoals and 



the outer reef at Funafuti. 



* Mem. III., Austral. Mus., Sydney, 1898, p. 354. 



t Ibid., p. 350. 



t ' Zool. Soc. Proc.,' 1898, p. 526. 



§ Ihid., p. 528. 



II Ibid., pp. 536-539. 



