TROPICAL PACIFIC FORAMINIFERA OF "ALBATROSS" 17 



Conorbina orbicularis (Terquem). — Parker, 1954, Bull. Mus. Comp. Zool., 



vol. Ill, no. 10, p. 522, pi. 8, figs. 13, 14. 

 Neoconorbina orbicularis (Terquem). — Hofker, 1956, Skrift. Univ. Zool. Mus., 



K0benhavn, vol. 15, p. 171, pi. 26, figs. 4-8. 



This species appears, from its many records, of which only a few 

 have been listed above, to be a cosmopolitan species. Its relationship 

 to Rosalina concinna (Brady) may be much closer than their place- 

 ment in different genera would suggest. Both are nearly circular 

 in outline with long crescentic chambers. They differ in that R. 

 concinna has a rounded periphery with the dorsal surface bulging 

 up steeply from the periphery, as if the test were nearly half of a 

 sphere, and that Neoconorbina terquemi has a pinched-together, 

 angular periphery with the dorsal surface sloping very gradually 

 upward from it, as if the test were only a small tangential slice of a 

 much larger sphere. 



The only specimens found in the present collections were from 

 around the islands and atolls. 



NEOCONORBINA TUBEROCAPITATA (Chapman) 



Plate 1, Figures 8, 9 



Discorbina tuberocapitata Chapman, 1899, Journ. Linn. Soc, Zoology, vol. 28, 



p. 11, pi. 1, fig. 9. 

 Discorbis tuberocapitata (Chapman). — Cushman, Todd, and Post, 1954, U.S. 



Geol. Surv. Prof. Paper 260-H, p. 359, pi. 89, fig. 16.— Todd, 1957, U.S. 



Geol. Surv. Prof. Paper 280-H, p. 290 (tbl. 4), pi. 91, fig. 2. 



Described from Funafuti in the Ellice Islands and also reported 

 from the Marshalls and from Saipan in the Marianas, this species 

 occurs in the present material fairly commonly off Fiji, 40-50 

 fathoms, and rarely in several other samples from near islands or 

 atolls. It is characterized by its prominent glassy knob that occupies 

 the center of the dorsal surface and, indeed, constitutes the major 

 part of the test. The species is to be expected in relatively shallow 

 warm water and probably in both eastern and western hemispheres. 



A similar, perhaps identical, species occurs off Cuba, reported as 

 Discorbis orbicularis (Terquem) var. antillea Bermudez (1935, p. 205, 

 pi. 16, figs. 11-13). 



Genus HANZAWAIA Asano, 1944 



HANZAWAIA CONCENTRICA (Cushman) 



Truncatulina concentrica Cushman, 1918, U.S. Geol. Surv. Bull. 676, p. 64, pi. 21, 



fig. 3. 

 Cibicides concentrica (Cushman). — Cushman, 1930, Florida State Geol. Surv., 



Bull. 4, p. 61, pi. 12, fig. 4.— Cushman, 1931, U.S. Nat. Mus. Bull. 104, 



pt. 8, p. 120, pi. 21, figs. 4, 5; pi. 22, figs. 1, 2. 

 Cibicides concentricus (Cushman). — Phleger and Parker, 1951, Geol. Soc. Amer. 



Mem. 46, pt. 2, p. 29, pi. 15, figs. 14, 15.— Parker, 1952, Bull. Mus. Comp. 



Zool., vol. 106, no. 10, p. 445, pi. 5, fig. 10. 



