32 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



H. B. Brady, Parker, and Jones, Trans. Zool. Soc, vol. 12, 1888, p. 227, 

 pi. 42, fig. 20; pi. 45, fig. 26. — Terrigi, Mem. R. Acad. Lincei, ser. 4, vol. 6, 

 1889, p. 116, pi. 7, figs. 5-7. — Egger, Abh. kon. bay. Akad. Wiss. Munchen, 

 CI. ii, vol. 18, 1893, p. 396, pi. 16, figs. 1-3, 10-12— Fornasini, Mem. Aecad. 

 Sci. Inst. Bologna, ser. 5, vol. 3, 1893, p. 435, pi. 2, figs. 15, 16. — Goes, Kongl. 

 Svensk. Vet. Akad. Handl., vol. 25, No. 9, 1894, p. 88, pi. 15, fig. 774.— Bur- 

 rows and Holland, Proc. Geol. Assoc, vol. 15, 1897, p. 47, pi. 2, fig. 24. — 

 Morton, Proc. Portland Soc. Nat. Hist., vol. 2, 1897, p. 120. — Chapman, Journ. 

 Roy. Micr. Soc, 1898, p. 2, pi. 1, fig. 2.— Flint, Rep. U. S. Nat. Mus., 1897 

 (1899), p. 333, pi. 76, fig. 4.— Chapman, Proc. Roy. Soc. Edinburgh, vol. 23, 

 1902, p. 392, pi. 1, figs. 2, 3.— Millett, Journ. Roy. Micr. Soc, 1904, p. 491.— 

 Chapman, Trans. New Zealand Inst., vol. 38, 1905, p. 103; Journ. Quekett 

 Micr. Club, ser. 2, vol. 10, 1907, p. 137— Bagg, Proc. U. S. Nat. Mus., vol. 

 34, 1908, p. 158.— Cushman, Proc. Boston Soc. Nat. Hist., vol. 34, 1908, 

 p. 30. — Sidebottom, Mem. and Proc. Manchester Lit. and Philos. Soc, vol. 

 53, No. 21, 1909, p. 2.— Chapman, Proc. Roy. Soc. Victoria, vol. 22, 1910, 

 p. 284; Journ. Linn. Soc, Zoology, vol. 30, 1910, p. 420.— Bagg, Bull. U. S. 

 Geol. Surv. No. 513, 1912, p. 82, pi. 24, figs. 9-14. 



Planorbulina /areata, var. (Truncatulina) lobatula Parker and Jones, Philos. 

 Trans., vol. 155, 1865, p. 381, pi. 14, figs. 3-6; pi. 16, figs. 18-20. 



Planorbulina lobatula Goes, Kongl. Svensk. Vet. Akad. Handl., vol. 25, No. 9, 

 1894, p. 88, pi. 15, fig. 774. 



Description. — Test typically adherent, plano-convex, ventral face 

 flattened, dorsal face moderately convex; peripheral margin rounded; 



a 



Fig. 34.— Truncatulina lobatula (Walker and Jacob). (Adapted from Brady.) a, ventral 

 view; b, dorsal view; c, side view. 



chambers numerous, usually seven in the last formed coil; sutures 

 somewhat depressed; wall usually fairly smooth, coarsely punctate or 

 sometimes ornamented with ridges or bosses; aperture a narrow slit 

 at the inner margin of the chamber. 



Diameter up to 1.2 mm. 



Distribution. — This species is recorded at Challenger station 206 in 

 2,100 fathoms. Bagg records it from 12 Albatross stations off the 

 Hawaiian Islands, depths ranging from 104 to 1,307 fathoms. I have 

 had specimens from the latter region, Albatross H2932 in 20 fathoms 

 and H2923 in 392 fathoms. It occurred fairly frequently in material 

 from the stomachs of Holothurians dredged at Albatross D3603 in 

 1,771 fathoms, Bering Sea. At Nero station 1464, near Guam in 891 



