204 PORAMINIFERA OF THE CRAG. 



22. Lagena Orbignyana (Seguenza), 1862. Plate VII, figs, 13 «, h. 



Entosolenia marginata (pars), Williamson, 1858. Eec. Foram. Grt. Brit., p. 9, 



pi. i, figs. 19, 20. 

 FissUEiNA Oebigntana, Seguenza, 1862. Foram. Monotal. Messin., p. 66, pi. ii, 



figs. 25, 26. 



— EoMETTENSis, Idem, 1862. Ibid., fig. 24. 



— Gemellaeii, Idem, 1862. Ibid., p. 70, pi. ii, fig. 45. 



Lagena teicincta, Oilmbel, 1868. Abbandl. k. Bayer. Akad. Wiss., vol. x, p. 606, 



pi. i, figs. 8 a, b. 

 FissuEiNA JJAEGINATA, var. TEiCAEiNATA, Bsuss, 1870. Sitzungsb. k. Akad. Wiss. 



Wien, vol. Ixii, p. 468, 

 No. 19 a. 

 Lagena, No. 63, Schlicht, 1870. Pietzpubl, p. 11, pi. iv, figs. 1—3 (ectosolenian 



form). 

 FissuEiNA TEICINCTA, Terquem, 1882. Mem. Soc. Geol. France, ser. 3, vol. ii, 



Mem. 3, p. 30, pi. i (ix), figs. 19 a, h. 



— TEICAEINATA, Idem, 1882. Ibid., p. 32, pi. i (ix), figs. 25 — 28. 

 Lagena maeginata, var. Oebigntana, Wright, 1882. Proc. Belfast Nat. Field 



Club, App. Ti, p. 181, pi. viii, fig. 5. 

 FissUEiNA maeginata, Terquem, 1882. Mem. Soc. Geol. Fr., ser. 3, vol. ii, 



Mem. 3, p. 30, pi. i (ix), figs. 20—22. 

 Lagena Oebignyana, Brady, 1884. Report ' Challenger,' pp. 447 and 484, pi. lix, 



figs. 1, 18, 24—26 ; winged variety, fig. 20. 



— — Balkwill and Millett, 1884. Journ. Microscopy, vol. iii, 



p. 82, pi. iii, fig. 1. 



— — Brady, Parher, and Jones, 1888. Trans. Zool. Soc, vol. xii, 



part 7, p. 222, pi. xliv, fig. 20. 



— — Egger, 1893. Abhandl. k. Bayer. Ak. ^¥iss., vol. xviii, 



part 2, p. 333, pi. x, figs. 89—91. 



— — Goes, 1894. K. Svensk. Vet.-Akad. Haudl., vol. sxv, No. 9, 



p. 82. 



Characters. — This close ally of L. marginata has three parallel keels, of which 

 the central one is usually the widest. 



Occurrence. — Lagena Orhigiiyana has a world-wide distribution and a very 

 extensive bathymetrical range ; but it is less frequently found in high latitudes. 

 The species was first described by Seguenza from the Miocene of Messina. It has 

 been recorded from the Eocene (Calcaire Grossier) of the Paris Basin, the Oligocene 

 of Pietzpuhl, the Pliocene of Piedmont and St. Brth, and the Post-Tertiary beds 

 of Ireland. We have found specimens also in the Scaldisian of Antwerp. In the 

 Coralline Crag we have found it sparingly in nearly all the zones examined. 



