24 MR. F. CHAPMAN ON SOME [Jan. 15, 



119. BooviNA NOBiLis, Haiitkeu. 



Bolivma nohilis, Brady, 1884, Cball. Rep. vol. ix. p. 424, pi. liii. 

 figs. 14, lo. 



Found in Sample No. 1, very rare ; 'No. 5, rare. 



120. BoLiviNA BEYRiCHi, Eeuss. 



Bolivina beyrichi, Brady, Chall. Eep. vol. ix. p. 422, pi. liii. 

 fig. 1. 



•■121. Bolivina OBSOLETA, £ley. 



Bolivina obsoleta, Eley, 1859, Greol. in the Garden, p. 195, pi. ii. 

 fig. n, p. 202, pi. viii. tig. lie. 



Textilaria quadrilatera, Sch wager, 1866, Novara-Exped., geol. 

 Theil, vol. ii. p. 253, pi. vii. fig. 103. 



Textidaria quadrilatera, Brady, 1884, Cball. Eep. vol. ix. p. 358, 

 pi. xlii. figs. 8-12. 



Dr. Brady records this form {T. quadnlatera) from various 

 stations in the Atlantic and Pacific Oceans, at depths between 350 

 and 1350 fathoms. That author also suggests that the form 

 belongs rather to the genus Bolivina. than to Textularia, on 

 account of the compression of the test, together with the siiape of 

 the aperture. The species T. quadrilatera was originally described 

 as a fossil from the Pliocene of Kar Nicobar ; but was previously 

 known from the Upper Chalk under the name of Bolivina obsoleta. 

 The characters of both the recent and fossil forms are so nearly 

 parallel as to satisfy the most critical student. 



Found in Sample No. 1, rare; No. 5, very rare. 



122. Bolivina bobusta, Brady. 



Bolivina rohusta, Brady, 1884, Chall. Eep. vol. ix. p. 421, pi. liii. 

 figs. 7-9. 



Found in Sample No. 5, very rare. 



123. Bolivina arenosa, sp. nov. (Plate I. fig. 3 a, h.) 



Test rhomboidal, compressed ; consisting of about 13 chambers. 

 Aboral end of test sharply angular. The earlier chambers are 

 linear, but rapidly increase in breadth. Peripheral edge of the 

 test somewhat sharp ; and the outline on the lateral aspect 

 sinuous. Aperture an elongate slit. Test of a pale ochreous 

 brown colour, finely arenaceous, but with a few coarser particles 

 interspersed. Length t}^ inch (1-08 mm.); breadth -X- inch 

 (•926 mm.). 



The above species is an exceptional one in the genus Bolivina, 

 species of that group usually possessing hyaline tests. The 

 vertical position and slit-like form of the aperture, however, 

 separate it from the genus Textulana. 



Found in Sample No. 1, very rare. 



