FORAMINIFERA OF NORTH PACIFIC OCEAN. 87 



POLYMORPHINA COMMUNIS d'Orbigny. 

 Plate 37, fig. 7. 



Polymorphina (Guttulina) communis d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, 

 p. 266, pi. 12, figs. 1-4; Modeles, No. 62.— Eggek, Neues Jahrb., 1857, p. 288, 

 pi. 13, figs. 16-18. 



Polymorphina communis H. B. Brady, Parker, and Jones, Trans. Linn. Soc. 

 London, vol. 27, 1870, pi. 39, p. 224, figs. 10a, 6.— H. B. Brady, Rep. Voy. 

 Challenger, Zoology, vol. 9, 1884, p. 568, pi. 72, fig. 19. — Burrows and 

 Holland, Proc. Geol. Ass., vol. 15, 1897, p. 46, pi. 2, fig. 14.— Flint, Rep. 

 U. S. Nat. Mus., 1897 (1899), p. 319, pi. 67, fig. 2.— Millett, Journ. Roy. 

 Micr. Soc, 1903, p. 263.— Chapman, Journ. Quekett Micr. Club, 1907, 

 p. 131. — Sidebottom, Mem. and Proc. Manchester Lit. and Philos. Soc, vol. 

 51, No. 9, 1907, p. 11. 



Description. — Test ovate, somewhat elongate, initial end broadly 

 rounded, apertural end somewhat obliquely pointed; chambers few, 

 inflated, sutures excavated; wall smooth. 



Length 0.75 to 1 mm. 



Distribution. — This species is recorded by Flint from Albatross 

 station 2842 in 72 fathoms off Unalaska. Bagg records it from the 

 Hawaiian Islands, but I am inclined, after examination, to place his 

 specimens under Polymorphina sororia. I have seen specimens from 

 Tuscarora station 11, in 437 fathoms in the eastern Pacific, and 

 Albatross H4856 in 898 fathoms in Bering Sea. This species has more 

 or less tumid chambers and a rounded initial end but is variable. 



POLYMORPHINA OVATA d'Orbigny. 



Plate 30, fig. 2. 



Polymorphina ovata d'Orbigny, For. Foss. Vienne, 1846, p. 233, pi. 13, figs. 

 1-3.— Reuss, Site. kon. Akad. Wien, vol. 55, 1867, p. 91.— H. B. Brady, 

 Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 564, pi. 72, figs. 7, 8.— Goes, 

 Bull. Mus. Comp. Zool., vol. 29, 1896, p. 54. 



Description. — "The test of this species has an oval but somewhat 

 inequilateral outline and the two faces are almost equally convex; 

 the oral end is obtuse, the aboral acuminate. The segments are 

 arranged with regularity in two alternating series, the last pair 

 occupying two-thirds of the visible shell. The sutures are complinate 

 and are marked by fine lines without external depressions." Descrip- 

 tion copied from Brady. 



Distribution. — Goes records this species as rare from Albatross 

 station 3407 in 885 fathoms. This specimen is here figured. 



POLYMORPHINA OVATA d'Orbigny, fistulose form. 

 Plate 40, fig. 4. 



A specimen with long branching last-formed chambers was found 

 in material from the Gulf of Sidra. The early chambers seem to be 

 allied to Polymorphina ovata. It is an exceptionally branching and 

 extended form. 



89977°— Bull. 71, pt. 3—13 7 



