24 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



This species has a slight resemblance in its last chambers to Gau- 

 dryina siphonella Reuss, but is not a Gaudryina, having the biserial 

 arrangement developed directly after the coiled series of chambers 

 in the young. 



TEXTULARIA CRASSISEPTA, new species. 



Description. — Test broad, much compressed, in end view quad- 

 rangular, composed of rather few chambers, the earlier low and 

 broad, the later shorter and comparatively high ; 

 walls coarsely arenaceous; borders of chambers 

 much thickened and appearing as raised por- 

 tions with depressed areas between; aperture 



becoming terminal 

 some distance from 

 the inner border of 

 the chamber in the 

 adult. 



Length 0.8-1.0 



5 mm. 



FIG. 41.— TEXTULARIA CRASSISEPTA. X CO. a, FRONT VIEW; 6, APER- Dlst fibutioil . This 



TURAL VIEW. • j> l , 



species was found at 

 Albatross station H3007, in 323 fathoms, near the Hawaiian Islands. 



Type.— Cat. No. 8336, U.S.N.M. 



In some respects this species suggests Textularia concava, but is 

 readily distinguishable. 



TEXTULARIA QUADRILATERA Schwager. 



Textularia quadrilatera Schwager, Novara Exped., Geol. Theil, vol. 2, I860, 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. 



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



Description. — Test elongated, 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 costse 

 for a short distance; wall hyaline, distinctly perforate; aperture at 

 one side near the distal end of the chamber, sometimes obliquely 

 elongate, but somewhat variable. 



Length up to 1.2 mm., megalospheric proloculum 0.076-0.115 

 mm., microspheric proloculum 0.012-0.023 mm. 



