LAGENA HEXAGONA. 193 



American littoral by d'Orbigny. No specimen was obtained from the ' Challenger' 

 dredgings. We note its occurrence as a fossil from the Eocene of the London 

 Clay, the Miocene of Messina (Seguenza) and Muddy Creek, Victoria, and from 

 the Pliocene of St. Erth. We have specimens also in our own collection from 

 the Casterlian and Scaldisian of Antwerp. In the Coralline Crao- we have 

 specimens from every locality examined except Aldborough. 



12. Lagena hexagona (Williamson), 1848. Plate VI, fig. 7. 



Entosolenia squamosa., var. hexagona, Williamson, 1848. A. M. N. H., ser. 2, 



vol.i, p. 20, pi. ii, fig. 23. 



— — — — Idem, 1858. Rec. Foratn. G-t. Brit., p. 13, 



pi. i, fig. 32. 



— — — scalariformis, Idem., 1858. Ibid., fig. 30 (very large 



areolae). 

 Lagena squamosa, Parker and Jones, 1862. Introd. Foraui., Appendix, p. 309. 



— scalariformis (part), Reuss, 1862. Sitz. k. Akad. Wiss. Wien, vol. xlvi, 



p. 333, pi. v, fig. 69 (very large 

 areola?). 



— favosa, Idem, 1862. Ibid., p. 334, pi. v, figs. 72, 73 (large, and very large 



areola?). 



— geometrica, Idem, 1862. Ibid., fig. 74 (small areola?). 



Ovulina obnata, Seguenza, 1862. Foraru. Monotal. Messin., p. 42, pi. i, fig. 12 



(large areola?). 

 Phialina ornata, Idem, 1862. Ibid., p. 48, fig. 30 (small areola?). 

 Lagena sulcata, var. (Entosolenia) squamosa, Parker and Jones, 1865. Phil. 



Trans., vol. civ, p. 354, 

 pi. xvi, figs. 11 a, b. 



— geometetca, Hantken, 1875. Mitth. Jahrb. Ung. g. Anst., vol. iv, p. 22, 



pi. xii, fig. 8. 



— Maeij:, Karrer, 1877. Geo!. F.- J. Wasserl., p. 378, pi. xvi b, fig. 16. 



— hexagona, Siddall, 1879. Catal. Brit. Eec. Foram., p. 6. 



— squamosa, var. hexagona, B. and P., 1876. R. B. Assoc, for 1875, p. 190. 



— hexagona, Green, 1881. Amer. Journ. Microsc, vol. vi, p. 46, fig. 41. 



— Brady, 18S4. Report ' Challenger,' pp. 446 and 472, pi. lviii, 

 figs. 32, 33. 



— — Egger, 1893. Abhandl. k. Bayer. Ak. Wiss., vol. xviii, part 2, 



p. 326, pi. x, fig. 60. 



Characters. — Lagense, presenting various modifications of the flask-like shape,, 

 which have a surface-reticulation of equally raised meshes, forming large or small 

 hexagons regularly disposed. See the diagram, fig. 21, p. 192. 



