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Show 8 ME. F. CHAPMAN ON SOME [Jan. 15, Aii abnormal variety of this species was found in Sample No. 1 (see PI. I. fig. 7), in which the last two chambers have been twisted; and both possess characteristic tubular apertures, so that the specimen has the appearance of two forms intergrown at right angles to one another. This species is frequent in Sample No. 1 ; rare, No. 3; common, No. 4; very rare, No. 5 ; frequent, No. 6. 6. BILOCULINA BINGENS (Lamarck). Biloculina rincjens, Brady, 1884, Chall. Rep. vol. ix. p. 142, pi. ii. figs. 7, 8. This form occurs very rarely in Sample No. 6. 7. BILOCULINA EINGENS (Lam.), var. STRIOLATA, Brady. Biloculina, ringens, var. striolata, Brady, 1884, Chall. Rep. vol. p. 1-13, pi. iii. figs. 7, 8. Previously found in the Pacific from depths of from 6 to 8 fathoms (Brady). Very rare in Sample No. 3; very rare, No. 4; rare, N o. 6. 8. BILOCULINA COMATA, Brady. Biloculina comata, Brady, 1884, Chall. Rep. vol. ix. p. 144, pi. iii. fig. 9 a, b. This species occurs very rarely in Sample No. 6. SPIROLOCULINA, d'Orbigny. 9. SPIROLOCULINA ROBUSTA, Brady. Spiroloculina robusta, Brady, 1884, Chall. Rep. vol. ix. p. 150. pi. ix. figs. 7, 8. This species was described by Dr. Brady from specimens found off Culebra Island, West Indies, 390 fathoms. Typical examples of S. robusta were frequent in Sample No. 1. 10. SPIEOLOCULINA ANTILLARUM, d'Orbigny. Spiroloculina anlillarum, Brady, 1884, Chall. Eep. vol. ix. p. 155, pi. x. fig. 21 a, b. This species was found in Sample No. 1, rare. 11. SPIROLOCULINA LIMBATA, d'Orbigny. Spiroloculina limbata, Brady, 1884, Chall. Rep. vol. ix. p. 150, pi. ix. figs. 15-17. A specimen of the ordinary typical form was fouud in Sample No, 1. 12. SPIEOLOCULINA GEATA, Terquem. Spiroloculina grata, Brady, 1884, Chall. Rep. vol ix p 155 pi. x. figs. 16, 17, 22, 23. This species generally affects areas round coral-reefs, and is |