FORAMINIFEEA OP THE ATLANTIC OCEAN 53 



Length, up to 2 mm.; breadth, 0.30 mm. 



The only Atlantic records for this species are from the Tortugas 

 region off Florida, although it has since been found at Samoa. The 

 following notes were made at the time the species was described. 



Specimens of A. antillarum were found at a few stations, usually 

 not in any considerable numbers. They resemble somewhat speci- 

 mens referred to Articulina conico-articulata by Millett ^ but have a 

 very different shape and appearance. They are very close to some 

 of the specimens referred to this species by Heron-Allen and Earland 

 from the Kerimba Archipelago.^ Our specimens, however, have a 

 much longer test, and their general appearance is somewhat different. 

 There seems to be a difference in the form and shape of the chambers 

 in the two forms, the megalospheric being less fusiform than in the 

 microspheric. 



It may be that more than one species is involved in the material 

 placed under this name as the early stages are very different. The 

 species should have a wide Indo-Pacific range. 



ARTICUUNA SULCATA Reuss 



Plate 12, Figure 6 



Articulina sulcata Reuss, Denkschr. Akad. Wiss. Wien, vol. 1, 1850, p. 383, 

 pi. 49, figs. 13-17; Neues Jahrb., 1853, p. 673.— H. B. Brady, Rep. Voy. 

 Challenger, Zoology, vol. 1, 1884, p. 183, pi. 12, figs. 12, 13.— H. B. Brady, 

 Parker, and Jones, Trans. Zool. Soc, vol. 12, 1888, p. 215, pi. 40, fig. 

 11. — HowcHiN, Trans. Proc. Roy. Soc. So. Australia, vol. 12, 1889, p. 5. — 

 Egger, Abhandl. kon. bay. Akad. Wiss. Miinchen, CI. II, vol. 18, 1893, p. 

 243, pi. 3, fig. 5. — Woodward, The Observer, vol. 4, 1893, p. 77. — Millett, 

 Journ. Roy. Micr. Soc, 1898, p. 510. — Sidebottom, Mem. Proc. Man- 

 chester Lit. Philos. Soc, vol. 48, No. 5. 1904, p. 16, pi. 4, figs. 16, 17.— 

 Heron-Allen and Earland, Journ. Roy. Micr. Soc, 1909, p. 318. — 

 Pearcey, Trans. Roy. Soc. Edinburgh, vol. 49, 1914, p. 1038. — Heron- 

 Allen and Earland, Trans. Zool. Soc. London, vol. 20, 1915, p. 585. — 

 Cushman, Bull. 71, U. S. Nat. Mus., pt. 6, 1917, p. 60, pi. 22, fig. 5.— 

 Heron-Allen and Earland, Bull. Soc Sci. Hist. Nat. Corse, 1922, p. 

 123. 



The above references are the most important ones referring to this 

 species. It may be questioned whether all these can be referred to 

 Reuss's species but forms which are similar in their characters are 

 widely distributed in the Atlantic, Mediterranean, and especially the 

 Indo-Pacific. 



ARTICULINA MULTILOCULARIS H. B. Brady. Parker, and Jones 



Plate 12, Figure 7 



Articulina muUilocularis H. B. Brady, Parker, and Jones, Trans. Zool. Soc, 

 vol. 12, 1888, p. 215, pi. 40, fig. 10. 



« Journ. Roy. Micr. Soc, 1898, pi. 12, figs. 9, 10. 



6 Trans. Zool. Soc. London, vol. 20, 1915, pi. 45, figs. 29, 31. 



