38 BULLETIN 161, UNITED STATES NATIONAL MUSEUM 



tween the genera Cymbaloporetta, Tretomphalus, and Rosalina are 

 also not clear. Biological study of species in these genera may be 

 expected to show that the "genera" are merely stages that the species 

 pass through in their life cycles. 



CYMBALOPORETTA SQUAM MOSA (d'Orbigny) 



Plate 20, Figure 3 



Rosalina squammosa d'Orbigny, 1839, in De la Sagra, Hist. Physiq. Pol. Nat. 



Cuba, Foraminiferes, p. 91, pi. 3, figs. 12-14. 

 Cymbalo-pora squammosa (d'Orbigny).- — Cushman, 1922, Carnegie Instit. Wash- 

 ington, Publ. 311, p. 41, pi. 6, figs. 4-6. 

 Cymbaloporetta squammosa (d'Orbigny). — Cushman, 1931, U.S. Nat. Mus. 



Bull. 104, pt. 8, p. 83, pi. 16, fig. 4.— Bermudez, 1949, Cushman Lab. 



Foram. Res. Spec. Publ. 25, p. 266, pi. 19, figs. 40-42.— Graham and Mili- 



tante, 1959, Stanford Univ. Publ., Geol. Sci., vol. 6, no. 2, p. 108, pi. 18, 



fig. 3. 

 Rosalina poeyi d'Orbigny, 1839, in De la Sagra, Hist. Physiq. Pol. Nat. Cuba, 



Foraminiferes, p. 92, pi. 3, figs. 18-20. 

 Cymbalopora poeyi d'Orbigny. — Brady, 1884, Rep. Voy. Challenger, Zoology, 



vol. 9, p. 636, pi. 102, fig. 13.— Flint, 1899, U.S. Nat. Mus. Ann. Rep. for 



1897, p. 326, pi. 72, fig. 1. 



This species probably has a worldwide distribution in warm shallow 

 water. In life it apparently is attached lightly to seaweed and other 

 objects that project above the sea bottom. 



It has not been determined whether this is a biologically separate 

 species from Cymbaloporetta bradyi or whether the two may be forms 

 of the same species. Pending such determination the two are sep- 

 arated on a morphologic basis. C. squammosa has a high-spired, 

 nearly plano-convex test. There are fewer lobes (usually about 

 seven) visible on its ventral surface than on that of C. bradyi, and 

 the central area is covered by an irregular coarsely porous plate. 

 The apex of the dorsal surface tends to appear as if the shell wall 

 were thickened, and the shell material is customarily purplish brown 

 or orange brown on the dorsal side in contrast to its white or clear 

 appearance on the ventral side. 



In the present material this species is much less widely distrib- 

 uted than is C. bradyi although it occurs commonly at Hereheretue. 



Genus CYMBALOPORELLA Cushman, 1927 



CYMBALOPORELLA TABELLAEFORMIS (Brady) 



Plate 19, Figure 5 



Cymbalopora tabellaeformis Brady, 1884, Rep. Voy. Challenger, Zoology, vol. 9, 

 p. 637, pi. 102, figs. 15-18.— Cushman, 1924, Carnegie Instit. Washington, 

 Publ. 342, p. 35, pi. 10, figs. 5-7. 



Cymbaloporetta tabellaeformis (H. B. Brady). — Cushman, 1927, Contr. Cushman 

 Lab. Foram. Res., vol. 3, pt. 1, p. 81, pi. 17, fig. 7. — Graham and Militante, 

 1959, Stanford Univ. Publ., Geol. Sci., vol. 6, no. 2, p. 107, pi. 18, fig. 1. 



