TROPICAL PACIFIC FORAMINIFERA OF "ALBATROSS" 37 



As is to be expected from the already-recorded restriction of this 

 reef-dwelling genus to the area west of about 170° W. longitude 

 (Todd, 1960), this species does not occur in most of the area covered 

 by the present collections. It was found only at Aloji Niue, and at 

 Kambara beach, Fiji, in both instances occurring in a fresh and 

 unworn state. 



Family CYMBALOPORIDAE 



Genus CYMBALOPORETTA Cushman, 1928 



CYMBALOPORETTA BRADYI (Cushman) 



Plate 19, Figures 1-4; Plate 20, Figure 4 



Cymbalopora poeyi (d'Orbignt) var. bradyi Cushman, 1915, U.S. Nat. Mus. 



Bull. 71, pt. 5, p. 25, pi. 10, fig. 2; pi. 14, fig. 2. 

 Cymbalopora bradyi Cushman, 1924, Carnegie Instit. Washington, Publ. 342, p. 



34, pi. 10, figs. 2-4. 

 Cymbaloporetta bradyi (Cushman). — Cushman, Todd, and Post, 1954, U.S. 



Geol. Surv. Prof. Paper 260-H, p. 364, pi. 90, figs. 13, 14.— Todd, 1957, 



U.S. Geol. Surv. Prof. Paper 280-H, p. 292 (tbl. 4), pi. 91, fig. 12.— Todd 



and Bronnimann, 1957, Cushman Found. Foram. Res., Spec. Publ. 3, p. 



37, pi. 11, fig. 9. — Graham and Militante, 1959, Stanford Univ. Publ., 



Geol. Sci., vol. 6, no. 2, p. 108, pi. 18, fig. 2. 

 Cymbalopora poeyi var. Brady, 1884, Rep. Voy. Challenger, Zoology, vol. 9, p. 



637, pi. 102, fig. 14. 



This species, which is widespread in warm shallow water, is dis- 

 tributed widely and is usually common in the present collections, 

 being found even in the deeper-water samples, where probably it was 

 washed out from near-shore areas. 



It shows an extreme variability in shape, as is typical of attached 

 species. From Cymbaloporetta squammosa it is separated on the basis 

 of its flatter and spreading form, its usually more numerous and 

 more irregular lobes on the ventral side, its flattened initial stage, 

 and its thinner and more delicate wall. The central area on the 

 ventral side is open, not covered by a porous plate as in C. squammosa. 

 A few initial chambers on the dorsal surface are sometimes orange 

 but the remainder of the dorsal surface as well as the entire ventral 

 surface is usually colorless. The wall is densely and rather coarsely 

 perforate on the dorsal surface, but these coarse perforations gradually 

 disappear as the wall is bent inward to form the ventral surface. 

 The periphery is rounded in edge view. The open ventral umbilicus 

 is not present in all specimens. Whether it is open or closed may 

 depend on the stage of development that had been reached when the 

 protoplasm left the test. 



The relationships between this species and C. squammosa are not 

 clear; surely they are very close. Moreover, the relationships be- 



