22 



BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



earlier broad and low, becoming higher in later development and the 

 last formed chambers higher than broad; sutures depressed and, with 

 the somewhat tumid chambers, giving a sinuous outline to the test; 

 wall arenaceous but of fine material and smoothly finished ; aperture 

 narrow, slightly above the base of the inner border of the chamber. 



Length about 1 mm. 



Distribution. — This species was found near the Hawaiian Islands at 

 Nero station 2034, in 175 fathoms. 



Type.— Cat. No. 8334, U.S.N.M. 



This species in some respects resembles Bolivina but in most 

 characters is a Textvlaria. The curva- 

 ture of the test in side view is marked. 



Fig. 37.— Textularia crescentiformis. x 75. a, front 



VIEW; b, SIDE VIEW, SHOWING THE DISTINCT CURVATURE OF FlG. 38.— TEXTULARIA CONCAVA. X 60. 

 THE TEST; C, APERTURAL VIEW. a, FRONT VIEW; b, APERTURAL VIEW. 



TEXTULARIA CONCAVA (Karrer). 



Plecanium concavum Karrer, Sitz. kais. Akad. Wiss., Wien, vol. 58, 1868. 

 p. 129, pi. 1, fig. 3. 



Textularia concava H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 360, pi. 42, figs. 11, 12[notpl.43, fig. 11].— Wright, Proc. Roy. Irish Acad., 

 ser. 3, vol. 1, 1891, p. 471.— Egger, Abh. kon. bay. Akad. Wiss. Miinchen, 

 CI. ii, vol. 18, 1893, p. 271, pi. 6, figs, 3, 4 [?].— Goes, Bull. Mus. Comp, 

 Zool., vol. 29, 1896, p. 42.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), 

 p. 283, pi. 28, fig. 5.— Millett, Jouru. Roy. Micr. Soc, 1899, p. 559, pi. 7, 

 fig. 5. — Sidebottom, Mem. and Proc. Manchester Lit. and Philos. Soc, 

 vol. 49, No. 5, 1905, p. 7, pi. 1, fig. 11. 



Description. — Test tapering, becoming broad in the adult, com- 

 pressed, broad faces often distinctly concave; chambers low and broad, 

 squarely truncated laterally; wall arenaceous; aperture a narrowly 



