FORAMINIFERA OF THE ATLANTIC OCEAN 



Alost of the records for this variety are from the Indo-Pacific where 

 the variety is a common one. 



Spirillina limbata, var. denticulata — Material examined 



SPIRILLINA DECORATA H. B. Brady 



Plate 2, figure 3 



Spirillina decoraia H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 633, pi. 85, figs. 22, 25. — Egger, Abhandl. kon. bay. Akad. Wiss. Miin- 

 chen, CI. II, vol. 18, 1893, p. 394, pi. 18, figs. 64, 65.— Woodward, The 

 Observer, vol. 4, 1893, p. 176. — Millett, Journ. Roy. Micr. Soc, 1903, 

 p. 695. — Dakin, Rep't Pearl. Oyster Fish. Ceylon, 1906, p. 237.— Rhum- 

 BLER, Zool. Jahrb., Abt. Syst.,"vol. 24, 1906, p. 33, pi. 2, fig. 11 (?).— 

 Chapman, Subantarctic Islands of New Zealand, 1909, p. 353. — Cushman, 

 Bull. 71, U. S. Nat. Mus., pt. 5, 1915, p. 7, pi. 5, figs. 1, 2.— Heron-Allen 

 and Earland, Trans. Zool. Soc. London, vol. 20, 1915, p. 685. — Side- 

 bottom, Journ. Roy. Micr. Soc, 1918, p. 250. — Cushman, Proc. U. S. 

 Nat. Mus., vol. 56, 1919, p. 623. — Heron-Allen and Earland, British 

 Antarctic Exped., Zoology, vol. 6, 1922, p. 197; Journ. Linn. Soc. Zoology, 

 vol. 35, 1924, p. 628. 



''Test free, discoidal, bilaterally symmetrical or nearly so; composed 

 of six or eight convolutions of a somewhat embracing tube. Lateral 

 faces slightly concave, peripheral edge thin and subcarinate; perfora- 

 tions obscure in thick-walled specimens, the surfaces of which become 

 pitted and furrowed ; aperture of the adult somewhat contracted and 

 triangular. Diameter %o inch (0.84 mm.) or more." 



Brady's records for this species include the following Atlantic 

 Challenger records: off the Azores, 1,000 fathoms; off the Canaries, 

 1,125 fathoms; off Culebra Island, 390 fathoms, and off Pernambuco, 

 675 fathoms. The figured specimen is from the station off the Canaries 

 (after Brady). Most of the later records for this species are from the 

 Pacific, although Egger records it from West Africa. 



SPIRILUNA GROOMII Chapman (?) 



Under this name Heron- Allen and Earland figure a peculiar speci- 

 men from the Clare Island region.' The figure in som^e w^ays resembles 

 the coiled operculum of a moliusk. Chapman originally described the 

 species from the Cam.brian of the Malverns. The recent record rests 

 upon the single specimen from the Clare Island region and a specimen 

 from Plvmouth, England, recently recorded by Heron- Allen and 

 Eariand '(Journ. Roy. Micr. Soc, 1930, p. 180, pi. 4, figs. 49, 50). 



3 Proc. Roy. Irish Acad., vol. 31, pt. 64, 1913, p. 107, pi. 9, flgs. 2, 3. 



