FOKAMINIFEBA OF NORTH PACIFIC OCEAN. 



107 



Fig. 1G5.— Haplo- 



PHRAGMOIDES 

 SPHiERILOCU- 

 LUM. X 30. 

 FROM PHOTO- 

 GRAPH. 



HAPLOPHRAGMOIDES SPH^RILOCULUM, new species. 



Description. — Test free, nautiloid, planospiral, consisting; of five 

 chambers in the last-formed coil, partially involute, chambers very 

 globose, inflated, sutures depressed, peripheral margin of test deeply 

 indented, aperture at the base of the apertural face; 

 wall of fine arenaceous material smoothly cemented; 

 color yellowish-brown. 



Diameter about 1 mm. 



Type-specimen.— Cat. No. 8218 U.S. N.M., horn Alba- 

 tross station D4970 in 500 fathoms off Japan. Another 

 specimen was found in material from Albatross station 

 D4957 in 437 fathoms, also of! Japan. 



This species differs from other planospiral arenaceous 

 forms in the spherical character and position of the 

 chambers, which are well separated so that their globose character 

 is given its full value in shaping the test. 



HAPLOPHRAGMOIDES RINGENS (H. B. Brady). 



Trochammina ringens H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 57, 

 pi. 5, figs. 12a, b; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 343, pi. 40, 

 figs. 17, 18.— Goes, Bull. Mus. Comp. Zool., vol. 29, 1896, p. 33.— Flint, 

 Rep. U. S. Nat. Mus., 1897 (1899), p. 281, pi. 27, fig. 1.— Millett, Journ. 

 Roy. Micr. Soc, 1899, p. 365, pi. 5, fig. 14 [?].— Bagg, Proc. U. S. Nat. 

 Mus., vol. 34, 1908, p. 129. 



Ammochilostoma ringens Elmer and Fickert, Zeitschr. wiss. Zool., vol. 65, 

 1899, p. 692. 



Description. — Test spirally coiled, planospiral, of few coils, cham- 

 bers usually completely involute covering the previously formed 



coils, chambers high, narrow, biconvex, usu- 

 ally with 3-5 in the lastformedcoil; the last- 

 formed chamber being much higher than 

 preceding ones, peripheral edge somewhat 

 sharp, surface smooth and polished, aperture 

 slightly arcuate, somewhat above the base 

 of the apertural face usually in a sort of 

 depression of the wall; color various shades 

 of brown. 



Longer diameter 1.5 mm. 

 Distribution. — Although Brady states in his 

 volume of the Challenger "Report" that the 

 species seems to be limited to the Atlantic, 

 in the volume on the "Summary of Results" 

 this species is recorded from station 237, 1,875 fathoms, off Japan. 

 Goes records this species as very scarce from a single Albatross sta- 

 tion off Panama, D3375 in 1,201 fathoms. Flint records it from 

 another Albatross station, D2923, in 822 fathoms off California. 



FlG. 160.— HAPLOPHRAGMOIDES 

 RINGENS. X 45. 



