50 PROCEEDINGS OP THE NATIONAL MUSEUM vol.77 



GUTTULINA (SIGMOIDINA) PACIFICA (Cushman and Ozawa) 



Plate 37, figures 3-5 



Sigmoidella (Sigmoidina) pacifica Cushman and Ozawa, Contr. Cushman 

 Lab. Foram. Res., vol. 4, 1928, p. 19, pi. 2, fig. 13; Jap. Journ. Geol. 

 Geogr., vol. 6, 1929, p. 77, pi. 16, figs. 12, 13. 



Polymorphina elegantissima Chapman (not H. B. Brady, Parker, and Jones), 

 New Zealand Geol. Surv., Pal. Bull. No. 11, 1926, p. 67, pi. 13, fig. 10. 



Test ovate, the greatest breadth below the middle, acuminate 

 toward the aperture; chambers elongated, more or less inflated, 

 arranged in either clockwise or contr aclock wise, quinqueloculine 

 series, earlier chambers invisible from the exterior, each succeeding 

 chamber involves the earlier one; suture depressed, distinct; wall 

 smooth, rather thick; aperture radiate. 



Measwements of the holotype specimen as follows: Length 0.76 

 mm.; breadth 0.53 mm.; thickness 0.31 mm. 



Holotype. — {Cat. No. 20313, U.S.N.M.) From Albatross D5318, 

 China Sea near Formosa, 340 fathoms. 



Distribution. — We also have specimens from the following: 



Recent. — Albatross D5315, China Sea near Formosa, 148 fathoms; 

 from off Kobama, Sea of Japan; from off Terao Miura, Japan; off 

 Poor Knight's Islands, New Zealand, 60 fathoms; off the Snares, 

 New Zealand. 



Miocene. — Chuthulin, Batesford, Victoria, Australia. 



GUTTULINA (SIGMOIDINA) SEGUENZANA (H. B. Brady) 



Plate 37, figures 8, 9 



Polymorphina seguenzana H. B. Brady, Rep. Voy. Challenger, Zoology, 

 vol. 9, 1884, p. 567, pi. 72, figs. 16, 17. 



Test elongate, fusiform, compressed on three sides; broadest some- 

 what below the center, tapering gradually toward the apertural end 

 and somewhat more rapidly toward the opposite extremity, which 

 finishes in a sharp point; segments few in number, only three visible 

 externally, long, narrow, erect; surface sm^ooth, sutures marked by 

 fine lines without external depressions. 



Length 1.6 mm. 



The trifacial compression of the test, its acuminate initial end, and 

 the erect position of the segments are sufficient to distinguish the 

 species from its near allies. 



This is an unusual species among the Polymorphinidae. It 

 appears to have a triserial arrangem_ent of chambers like Triloculina, 

 but both ends are acute. The above description is from Brady. 



Distribution. — Very rare off the Ki Islands, southwest of New 

 Guinea, 129 fathoms; Port Jackson, New South Wales, 2-10 fathoms. 



