6KT. 9 KECENT FORAMINIFEEA — CUSHMAN AND WICKENDEN 7 



LAGENA species 7 

 Plate 3, figures 6 a, b 



This form is a peculiar one in the ridges at the base. It is some- 

 what complex and has a thickened band along the periphery; the 

 aperture is elongate, elliptical. 



" Family POLYMORPHINIDAE 



Genus SIGMOIDELLA Cushman and Ozawa, 1928 



SIGMOIDELLA (SIGMOIDINA) PACIFICA Cushman and Ozawa 



Plate 3, figures 7 a,b 



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

 Lab. Foram. Res., vol. 4, 1928, p. 19, pi. 2, fig. 13. 



Test small, involute, somewhat compressed, few chambers visible 

 from the exterior, ovate, the greatest breadth below the middle; 

 chambers few, distinct, the last-formed one somewhat angled at the 

 periphery; sutures distinct, very slightly depressed; w^all smooth, 

 translucent; aperture radiate, terminal. 



Length 0.43 mm., breadth 0.32 mm., thickness 0.14 mm. 



The type of this species is from the China Sea, near Formosa. It 

 is interesting to find this species so far from its original locality, 

 although its know^n distribution is wide in the Pacific. 



Family NONIONIDAE 



Genus ELPHIDIUM Montfort, 1S08 



ELPHIDIUM AETICULATUM d'Orbigny, RUGULOSt'M, new variety 



Plate 3, figures S a, b 



Test bilaterally symmetrical, umbilicate, somewhat compressed, 

 periphery rounded; about nine chambers in the last-formed coil, 

 slig'htl}" inflated; sutures slightly depressed, gently curved, somewhat 

 filled with a rugose secondary growth which, over the umbilical region, 

 fills that area, wall otherwise smooth, finely perforate; aperture con- 

 sisting of an arched opening in the median line and a few smaller 

 supplementary openings at either side. 



Diameter 0.30 mm., thickness 0.12 mm. 



Holotype oj variety.— {Cat. No. 20782, U.S.X.M.) from off Juan 

 Fernandez, collected by Dr. Waldo Schmitt. 



This variety differs from the species described by d'Orbignj^ in the 

 peculiar ornamentation of the sutures and the umbilical regions, and 

 also in the aperture. The general shape and number of chambers is 

 very similar to d'Orbigny's species. 



ELPHIDIUM SCHMITTI, new species 



Plate 3, figvu-es 9 a~c 



Test bilaterally symmetrical, slightl}^ compressed ; periphery broadly 

 rounded; about seven chambers in the last-formed coil, inflated; 



