LAGENA SULCATA. 187 



Lagena sulcata, Brady and Eohertson, 1876. Eep. Br. Assoc, for 1875, p. 189. 

 Lagenulina costata, Terquem, 187G. Phage Dunkerque, p. 67, pi. vii, fig. 2. 

 Lagena Natrii, Blake, 1876. Yorkshire Lias, p. 453, pi. xviii, fig. 8 (= ? striata). 



— sulcata, Wright, 1877. Proceed. Belfast Field Club for 1876-7, Appendix 



iv, p. 103, pi. iv, fig. 10. 

 Capitellina hultistriata, Marsson, 1S78. Mitth. Nat. Verein Neu-Vorpom. u. 



Riigen, Jahrg. x, p. 123, pi. i, 

 fig. 3. 

 Lagena sulcata, Vine, 1878. Science Gossip, vol. xiv, p. 52, fig. 27. 



Nicholson, 1879. Manual Palseout., vol. i, p. 114, fig. 18/ 



— costata, 1 Terquem, 1882. Mem. Soc. Geol. Pr., ser. 3, vol. ii, mein. iii, p. 27, 



pi. i (ix), fig. 11 (Z. sulcata? neckless). 



— oenata, Terquem, 1882. Ibid., fig. 12. 



Lagena sulcata, Brady, 1884. Report ' Challenger,' pp. 445 and 462, pi. lvii, 



figs. 23, 26, 33, 31 ; pi. lviii, figs. 4, 17, 18 ; and 

 " winged varieties," p. 462, pi. lxi,figs. 35 — 37. 



— — Balkwill and Wright, 1885. Trans. E. I. Acad., vol. xxviii (Sci.), 



p. 338, pi. xiv, figs. 1 and 2. 



— striata, Sherborn and Chapman, LS86. Journ. E. Microsc. Soc, ser. 2, 



vol. vi, p. 745, pi. xiv, fig. 16 

 (long-necked). 



— — var., Iidem, 1SS6. Ibid., fig. 17 (round, with sharp ribs; ap- 



proaching acuticosta). 



— sulcata, Iidem, 1886. Ibid., fig. 18. 



— Brady, 1S87. Ibid., vol. for 1887, p. 903. 



— costata, Idem, 1887. Ibid., p. 1S4, pi. v, fig. 5 (neckless ; strong 



ribs). 



— striata, Idem, 1SS7. Ibid., fig. 6 (ueckless ; feeble riblets). 



Brady, 1888. Geol. Mag., dec. 3, vol. v, p. 481, pi. xiii, fig. 11. 



— — Brady, Parker, and Junes, 18SS. Trans. Zool. Soc, vol. xii, fig. 11. 



No. 7, p. 222, pi. xliv,figs. IS, 22,34. 



— Chapman, 1893. Jouru. Eoy. Micr. Soc. for 1S93, p. 5S3, 



pi. viii, fig. 11. 

 Goes, 1S94. K. Svensk. Vet.-Akad. Handl., vol. xxv, No. 9, 

 p. 78, pi. xiii, figs. 742 — 744. 



Characters. — To the description given at p. 36 of Part I we may add that the 

 riblets not only vary in strength, but in length, sometimes reaching halfway or 

 less from the base to the top (that is, from the aboral to the oral end of the shell), 

 becoming semistriata, sometimes alternating, long, and short, as in interrupta. Also 

 that the upper end of the strins may become spiral on the neck, as in striata; and 

 the lower ends may either end off distinct around the base, or may be fused 

 together into a mucro. 



-Occurrence. — Lagena sulcata is at home in all seas and at nearly all depths, and 



1 It is not possible to determine, in many cat,es, if the published " costate " and "sulcate" forms 

 have been named strictly in accordance with the plan of their sculpturing. 



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