44 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



less rounded, with numerous fine longitudinal costae, followed by a 

 few more compressed chambers, the surface of which has a very fine 

 reticulate pattern, not seeming to be raised from the surface of the 

 test and yet distinct with a considerable magnification. The last- 

 formed chambers are still more compressed, with a sharp edge, and 

 are composed of clear, transparent shell material, the wall being not 

 even punctate over a large part of the surface. 



BOLIVINA RHOMBOIDALIS (Millett). 



Textularia rhomboidalis Millett, Journ. Roy. Micr. Soc, 1899, p. 559, pi. 7, fig. 



4. — SiDEBOTTOM, Mem. Proc. Manchester Lit. Philoe. Soc, vol. 49, 1905, no. 



5, p. 8, pi. 2, fig. 2. 

 Bolivina rhomboidalis Cushman, Publ. 311, Carnegie Inst. Wash., 1922, p. 28. 



Description. — Test generally triangular in front view, increasing in 

 breadth from the rather bluntly pointed initial end to the broad 

 apertural end, which is oblique; chambers numerous, distinct, 

 obliquely placed, so that the test in end view, instead of having the 

 sides at right angles to one another, has them more or less oblique, 

 giving a rhomboid shape to the test in end view; wall translucent, 

 coarsely punctate; aperture a low slit at the base of the inner margin 

 of the last-formed chamber within a reentrant of the margin; color 

 white. 



Length of the Tortugas specimens 0.40 mm. 



Distribution. — This is from station 28, in Bird Key Harbor, Tor- 

 tugas, in 4.75 fathoms (9 meters). This species was described by 

 Millett under the genus Textularia from the Malay Archipelago, and 

 he gives also Challenger station 185, off Raine Island, and other locali- 

 ties in Torres Strait, and also the Aegean Sea. Sidebottom's speci- 

 mens were from the Mediterranean. This single Tortugas specimen is 

 very similar to that figured by Millett. It has not previously been 

 recorded from the Atlantic, but should be looked for further in the 

 West Indian region. 



BOLIVINA QUADRILA'l ERA (Schwager). 



Plate 8, fig. 2. 



Textularia quadrilatera Schwager, A'^oi^ara-Exped., Geol. Theil, vol. 2, 1866, 

 p. 253, pi. 7, fig. 10. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 358, pi. 42, figs. 8-12.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), 

 p. 283, pi. 28, fig. 3.— Millett, Journ. Roy. Micr. Soc, 1899, p. 559, pi. 7, 

 fig. 3.— Bagg, Proc U. S. Nat. Mus., vol. 34, 1908, p. 131.— Cushman, 

 Bull. 71, U. S. Nat. Mus., pt. 2, 1911, p. 24, figs. 42-44 (in text). 



Bolivina quadrilatera Wright, Proc Roy. Irish Acad., ser. 3, vol. 1, 1891, p. 475. 



Description. — Test elongate, slender, very slightly tapering, in 

 end view quadrilateral, the angles usually carinate; chambers high 

 and narrow, running back obliquely on the outer border, compressed; 

 the initial end of the test often with a stout spine, occasionally with 

 several small spines or smooth and broadly rounded, the early 

 chambers sometimes with one or more longitudinal raised costa'ft 



