152 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



POLYMORPHINA PROBLEMA D'Orbigny. 



Guttulhia prohlona D'Okbigny. Ann. Sci. Nat., vol. 7, 1826, p. 2G6, No. 



14 ; Foram. Foss. Vienne, 1846, p. 224, pi. 12, figs. 26-28. 

 Polymorphina problema D'Okbigny, Modele, 1826, No. 61. — H. B. Brady, 



Parker, and Jones, Trans. Linn. Soc, vol. 27, 1870, p. 225, pi. 39, figs. 



11a, b. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 



568, pi. 72, fig. 20 ; pi. 73, fig. 1 ; .lourn. Roy. Micr. Soc, 1887, p. 913.— 



Heron-Allen and Earland, Journ. Roy. Micr. Soc, 1916, p. 49. 



This name seems to be one commonly used for almost any form 

 of smooth Poli/morphina that has the chambers much inflated and 

 projecting out from the general surface. Such forms are recorded 

 from many parts of the world, but do not seem to be present at 

 least in the form figured by D'Orbigny from the western part of 

 the Atlantic. 



POLYMORPHINA ROTUND ATA (Borneniann). 



GuttuHna rotundata Bornemann, Zeitsobr. deutsch geol. Gesell., vol. 7, 

 1855, p. 346, pi. 18, fig. 3. 



Polymorphina rotundata H. B. Brady, Parker, and Jones, Trans. Linn. 

 Soc London, vol. 27, 1870, p. 234, pi. 40, figs. 19 a-e; text figures k, I, 

 7/1.— H. B-. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 570, 

 pi. 73, figs. 5-8. — Balkwlll and Wright, Trans. Roy. Irish Acad., vol. 

 28, 1885, p. 346.— H. B. Brady, Journ. Roy. Micr. Soc, 1887, p. 914.— 

 Wright, Proc Roy. Irish Acad., ser. 3, vol. 1, 1891, p. 487 ; Irish Nat., 

 vol. 9, No. 3, 1900, p. 55 ; vol. 11, 1902, p. 213.— Earland, Journ. Quekett 

 Micr. Club, ser. 2, vol. 9, No. 57, 1905, p. 217. — Cushman, Proc. Boston 

 Soc Nat. Hist. Soc, vol. 34, No. 2, 1908, p. 29.— Heron-Allen and 

 Earland, Journ. Roy. Micr. Soc, 1907, p. 434; Proc Roy. Irish Acad., 

 vol. 31, pt. 64, 1913, p. 101 ; Trans. Linn. Soc London, ser. 2, vol. 11, 

 1916, p. 264 ; Journ. Roy. Micr. Soc, 1916, p. 49. 



Rounded forms, such as are commonly referred to this species, 

 seem to be common on the coasts of the British Isles but are rare on 

 this side of the Atlantic. I have had specimens from the Woods Hole 

 region. 



POLYMORPHINA SORORIA Reuss. 



Plate 41, figs. 3-5. 



Polymorphina {Outtulina) sororia Reuss, Bull. Acad. Roy. Belg., ser. 2, 

 vol. 15, 1862, p. 121, pi. 2, figs. 25-29. 



Polymorphina sororia H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 562, pi. 71, figs. 15, 16 ; pi. 73, fig. 15 ; Journ. Roy. Micr. Soc, 

 1887, p. 914.— Pearcey, Trans. Glasgow Nat. Hist. Soc, vol. 2, 1890, 

 p. 178. — Egger, Abli. kon. bay. Akad. Wiss. Miinchen, CI. II, vol. 18, 

 1893, p. 308, pi. 9, fig. 20.— Wright, Irish Nat., vol. 9, No. 3, 1900, p. 

 55. — Heron-Allen and Earland, Proc Roy. Irish Acad., vol. 31, pt. 

 64, 1913, p. 102 ; Trans. Linn. Soc. London, ser. 2, vol. 11, 1916, p. 364 ; 

 Journ. Roy. Micr. Soc, 1916, p. 48. 



Desc7iptio7i. — Test somewhat longer than liroad, not compressed, 

 initial end subacute, somewhat broadly angled, apertural end slightly 



