TROPICAL PACIFIC FORAMINIFERA OF "ALBATROSS" 15 



This distinctive species occurs rarely but is found in a good many 

 of the deep-water samples. It seems to have a long range, at least 

 from upper Eocene to Recent, and a worldwide distribution. It was 

 originally described from the Miocene and Recent of Australia. 

 Other records include the upper Eocene of Czechoslovakia, Recent of 

 Saipan, and the Miocene of Eniwetok. 



Its distinguishing characteristics are the exceptionally coarse pores 

 that are largely restricted to the dorsal surface, being arranged in 

 crude rows paralleling the curved dorsal sutures, the indentation of 

 the aperture into the apertural face, and the smoothly oval shape of 

 the entire test. 



Genus NEOCONORBINA Hofker, 1951 



NEOCONORBINA CRUSTATA (Cushman) 



Plate 2, Figures 2, 3 



Discorbis crustata Cushman, 1933, Contr. Cushman Lab. Foram. Res., vol. 9, 

 p. 88, pi. 9, fig. 4.— Cushman, Todd, and Post, 1954, U.S. Geol. Surv. 

 Prof. Paper 260-H, p. 358, pi. 89, fig. 6. 



This low, scalelike species occurs rarely in a few of the samples. 

 The dorsal surface is unornamented except for the slightly limbate 

 sutures. The chambers are crescent-shaped, each one extending 

 more than half way around the circumference of the test. The 

 initial chambers make a small peaked area in the center of the dorsal 

 side. The ventral side is umbilicate at the center with the apertures 

 of the last several chambers opening into the depressed umbilicus. 

 Dorsally, the wall is finely perforate, but the ventral wall is distinctly 

 perforate. 



NEOCONORBINA FLORIDENSIS (Cushman) 



Plate 2, Figure 4 



Discorbis bertheloti (d'Orbigny) var. ftoridensis Cushman, 1931, U.S. Nat. Mus. 



Bull. 104, pt. 8, p. 17, pi. 3, figs. 3-5. 

 Discorbis ftoridensis Cushman. — Phleger and Parker, 1951, Geol. Soc. Amer. 



Mem. 46, pt. 2, p. 20, pi. 10, figs. 5-7. 

 Rosalina ftoridensis (Cushman). — Parker, 1954, Bull. Mus. Comp. Zool., vol. 



Ill, no. 10, p. 525, pi. 8, figs. 28, 29. 



In the present material this species is found at only one locality, 

 Mokaujar Anchorage, Fiji, where it occurs fairly commonly. 



Specimens are not entirely typical, differing in the following respects : 

 (a) more highly peaked at the center rather than flat-domed; (b) 

 sutures more heavily limbate; (c) chambers more elongate and arched, 

 resulting in a more nearly circular outline; (d) wall of the early whorls 

 having areas of clear unperforated shell parallel to the sutures, these 

 areas giving the central part of the test a more glassy appearance. 

 Despite these differences, all slight in degree, the present specimens 

 are believed to be referable to Neoconorbina jloridensis, which was 



