FORAMINIFERA OF THE ATLANTIC OCEAN. 25 



Lagena hexagona Siddall, Cat. Brit. Rec. Foram., 1879, p. 6. — Gre^in, Amer. 

 Journ. Micr., vol. 6, ISSl, p. 46, pi., fig. 4. — Balkwill and Wright, 

 Proc. Roy. Irish Acad., ser. 2, vol. 3, 1882, p. 548.— H. B. Brady, Rep. 

 Voy. Challenger, Zoology, vol. 9, 1884, p. 472, pi. 58, figs. 32, 33.— 

 Balkwill and Wright, Trans. Roy. Irish Acad., vol. 28, 1885, p. 340. — 

 H. B. Brady, Journ. Roy. Micr. Soc, 1S87, p. 904. — Wright, Ann. Mag. 

 Nat. Hist., vol. 4, ser. 6, 1889, p. 449. — Pkarcey, Trans. Glasgow Nat. 

 Hist. Soc, vol. 2, 1890, p. 177.— Wright, Proc. Roy. Irisli Acad., ser. 3, 

 vol. 1, 1891, p. 480. — RonraiTSON, Proc. Nat. Hist. Soc. Glasgow, pt. 3, 

 1892, p. 241.— Egger, Abli. kon. bay. Akad. Wiss. Miinclien, CI. II, vol. 

 18, 1893, p. 32G, pi. 10, fig. 60.— Goiss, Kongl. Svensk. Vet. Akad. Handl., 

 vol. 25, No. 9, 1894, p. 80, pi. 13, fig. 746.— Chapman, Proc. Zool. Soc. 

 London, pt. 1, 1895, p. 28.— Wright, Irish Nat., vol. 9, No. 3, 1900, p. 

 54. — Millett, Journ. Roy. Micr. Soc, 1901, p. 8. — Chapman, Trans. 

 New Zealand Inst., vol. 38, 1905, p. 92. — Eakland, Journ. Quekett Micr. 

 Club, ser. 2, vol. 9, No. 57, 1905, p. 213.— Balkwill and Millett, Rec. 

 Foram. Galway, 1008, p. 5. — Heron-Allen and Earland, Journ. Roy, 

 Micr. Soc, 1909, p. 425. — Chapman, Subautarctic Ids. N. Zealand, 

 1909, p. 334; Journ. Linn. Soc Zool., vol. 30, 1910, p. 408.— Side- 

 bottom, Mem. Proc. Manchester Lit. Philos. Soc, vol. 54, No. 16, 1910, 

 p. 17, pi. 2, fig. 3.— Ct;shman, Bull. 71, U. S. Nat. Mus., pt. 3, 1913, 

 p. 17, pi. 6, figs. 2, 3. — Herok-Aj.len and Eabland, Proc Roy. Irish 

 Acad., vol. 31, pt. 64, 1913, p. 76; Trans. Zool. Soc. London, vol. 20, 

 1915, p. 656; Trans. Linn. Soc London, ser. 2, vol. 11, 1916, p. 244; 

 Journ. Roy. Micr. Soc, 1916, p. 44. — Mestayer, Trans. New Zealand 

 Inst., vol. 48, 1916, p. 129.— Cushman, Proc U. S. Nat. Mus., vol. 

 56, 1919, p. 60S. 



DescHption. — Test pyriform, base semicircular, apertural end 

 somewhat drawn out, with a short neck; surface ornamented by 

 rather regular hexagonal reticulations, the sides of the hexagons ver- 

 ticals, the angles pointing toward the ends of the test. 



Length up to 0,25 mm. 



Distribution. — Williamson originally described this species from 

 off the Shetland Islands, As the above references show, it is recorded 

 from many stations about the British Isles and comparatively few 

 elsewhere. The European material that I have seen, especially from 

 off the southwest of Ireland, is very typical and abundant. There 

 are a few specimens from the western Atlantic which I have referred 

 rather questionably to this species. They differ from the typical 

 British form in either their slightly different shape, or in the rela- 

 tive size of the reticulations. 



The typical British material, so far as I have seen, is of the type 

 given by Williamson, that is, the pyriform test with a broadly 

 rounded initial end, the short neck, and the deep reticulations with 

 the peculiar arrangement already noted in the description above. 



