22 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



LAGENA GRACILIS Williamson. 



Plate 4, tigs. 3, 4. 



Laffena gracilis Williamson, Ann. Mag. Nat. Hist., ser. 2. vol. 1, 1848, p. 13, 

 pi. 1, figs. 3, 4.— Reuss, Sitz. Akad. Wiss. Wieu, vol. 46, pt. 1, 18G2 

 (18G3), p. 331, pi. 4, figs. 58-61; pi. 5, tig. 62.— Balkwiix and Weight, 

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

 Voy. Challenger, Zoology, vol. 9, 1884, p. 464, pi. 58, figs. 2, 3, 7-9, 

 10 [?], 19, 22, 23, 24 [?]. — Balkwiix and Weight, Trans. Roy. Irish 

 Acad., vol. 28, 1885, p. 338.— H. B. Beady, Jour. Roy. Micr. Soc, 1887, 

 p. 903.— Pearcey, Trans. Glasgow Nat. Hist. Soc, vol. 2. 1890, p. 177.— 

 Wright, Proc. Roy. Irish Acad., ser. 3, vol. 1, 1891, p. 479. — Egger, 

 Abh. kon. bay. Akad. Wiss. Miinchen, CI. II, vol. IS, 1893, p. 328, pi. 10, 

 figs. 25, 49.— Goiis, Kongl. Sveusk. Vet. Akad. Handl., vol. 25, No. 9, 



1894, p. 77, pi. 13, fig. 738. — Chapman, Proc. Zool. Soc. London, pt. 1, 



1895, p. 27. — MOETON, Proc. Portland Soc, vol. 2, 1897, p. 117. — Millett, 

 Journ. Roy. Micr. Soc, 1901, p. 482, pi. 8, figs. 12-14.— Kiaer, in Due 

 d'Orleans, Croisiere Ocean, Mer du Gi'onland, 1905 (1907), p. 560. — 

 Balkwill and Millett, Rec. Foram. Galway, 1908, p. 5. — Chapman, 

 Subantarctic Ids. New Zealand, 1909, p. 333; Journ. Linn, Soc. Zool., 

 vol. 30, 1910, p. 409. — SiDEBOTTOM, Mem. Proc Manchester Lit. Philos. 

 Soc, vol. 54, No. 16, 1910, p. 16.— Bagg, Bull. 513, U. S. Geol. Survey, 



1912, p. 47, pi. 14, figs. 7, 8.— Cushman, Bull. 71, U. S. Nat. Mus., pt. 3, 



1913, p. 24, pi. 8, figs. 5, 6. — Hebon-Allen and Earland, Proc. Roy. 

 Irish Acad., vol. 31, pt. 64, 1913, p. 81.— Pearcey, Trans. Roy. Soc 

 E'dinb., vol. 39, 1914, p. 1017. — Chapman, Biol. Res. Endeavour, vol. 3, 

 pt. 1, 1915, p. 21. — Heron-Allen and Earland, Trans. Linn. Soc. Lon- 

 don, ser. 2, vol. 11, 1916, p. 248; Journ. Roy. Micr. Soc, 1916, p. 45.— 

 Cushman, Bull. 100, U. S. Nat. Mus., vol. 4, 1921, p. 181. 



Lagena vulgaris Williamson, var. gracilis Williamson, Rec. Foram. Great 

 Britain, 1858, p. 7, pi. 1, figs. 12, 13. 



Description. — Test elon<i;ate, fusiform, broadest in the middle, 

 apertiiral end tapering into a long cylindrical neck with a slightly 

 expanded lip, opposite end pointed ; surface ornamented by a few 

 distinct longitudinal costae, 6-12 in number. 



Length up to 0.60 mm. 



Distribution. — This species, originally described by Williamson, oc- 

 curs in its typical form at many stations about the British Isles. It 

 is recorded at veiy many localities elsewhere, but an examination of 

 what few figures are given shows many different forms. I have seen 

 iiritish material from off the southwest of Ireland, and have one 

 specimen from Alhatross station D2534, in 1,234 fathoms (2.257 

 meters) , off the northeastern coast of the United States, which seems 

 typical. 



