FORAMINIFEKA OF THE ATLANTIC OCEAN. 



LAGENA ACUTA (Rcuss). 



Fissurina acuta Reuss, Sitz. Akad. Wiss. Wien, vol. 46, pt. 1, 1862 (1863), 

 p. 340, pi. 7, figs. 90, 91. 



Lagena acuta Fornasini, Boll, See. Geol. Ital., vol. 7, 1SS8, p. 47, pi. 3, 

 fig. 6.— CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 3, 1913, p. 0, pi. 38, 

 fig. 6. — Heron-Allen and EArfcAND, Proc. Roy. Irish Acad., vol. 31, 

 pt. 64, 1913, p. 82; Trans. Linn. Soc. London, ser. 2, vol. 11, 1916, 

 p. 249; Journ. Roy. Micr. Soc, 1916, p. 45. 



Heron-Allen and Earland in the above references have recorded 

 this species from about the British Isles, in the Clare Island region 

 " widely distributed and often very common," and from the west 

 coast of Scotland and off South Cornwall. 



I have found no specimens referable to this species from the west- 

 ern Atlantic. 



LAGENA ACUTICOSTA Reuss. 



Plate 1, figs. 1-3. 



Lagena acuticosta Reuss, Sitz. Akad. Wiss. Wien, vol. 44, pt. 1, 1861 

 (1862), p. 305, pi. 1, fig. 4; vol. 46, pt. 1, 1862 (1863), p. 331, pi. 5, 

 fig. 63.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 464, pi. 57, figs. 31, 32; pi. 58, figs. 20 (?), 21.— Peaecey, Trans. 

 Glasgow Nat. Hist. Soc, vol. 2, 1890, p. 177.— Egger, Abli. kou. bay. 

 Akad. Wiss. Miinclien, CI. II, vol. 18, 1893, p. 329, pi. 10, figs. 47, 48, 

 82, 83.— Wright, Irish Nat., vol. 9, no. 3, 1900, p. 53.— Millett, Journ. 

 Roy. Micr. Soc, 1901, p. 8.— Chapman, The Foraminifera, 1902, p. 

 402.— Heron-Allen and Earland, Journ. Roy. Micr. Soc, 1009, p. 423.— 

 Chapman, Subantarctic Ids. N. Zealand, 1809, p. 334; Journ. Linn. 

 Soc. Zool., vol. 30, 1910, p. 407.— Sideeottom, Mem. Proc. Manchester 

 Lit. Philos. Soc, vol. 54, no. 16, 1910, p. 16; Journ. Quekett Micr. 

 Club, vol. 11, 1912, p. 388, pi. 15, fig. 22.— Bagg, Bull. 513, U. S. Geol. 

 Survey, 1912, p. 45, pi. 14, fig. 28.- Cushman, Bull. 71, U. S. Nat. 

 Mus., pt. 3, 1913, p. 23, pi. 8, figs. 9, 10 ; pi. 23, fig. 2.— Pearcey, Trans. 

 Roy. Soc. Edinb., vol. 49, 1914, p. 1017.— Heron-Allen and Earland, 

 Trans. Linn. Soc. London, ser. 2, vol. 11, 1916, p. 247.— Mestayer, Trans. 

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

 Mus., vol. 56, 1919, p. 610; Bull. 100, U. S. Nat. Mus., vol. 4, 1921, 

 p. 180. 

 Lagena sulcata (Walker and Jacob), var. acuticosta H. B. Brady, Parker, 

 and Jones, Trans. Zool. Soc London, vol. 12, 1SS8, p. 222, pi. 44, 

 figs. 26, 31. 

 Description.— T^st subglobular to pyriform, broadest near the base, 

 which is broadly rounded, thence gradually tapering to the apertural 

 end, the body of the test with a number of thin, much elevated 

 costae, running from the base to near the apertural end, where they 

 become coalesced into a platelike area below the aperture. 

 Length up to 0.35 mm. 



Distrihution. — This is one of the common species of the genus and 

 seems to be widely distributed, as the above list of references will 



