24 



BULLETIN 161, UNITED STATES NATIONAL MUSEUM 

 Table 9. — Bolivina co7npacta — material examined — Continued 



BOLIVINA OCEANICA Cushman 



Plate 7, Figure 4 



Bolivina oceanica Cushman, Contr. Cushman Lab. Foram. Res., vol. 9, p. 81, 

 pi. 8, figs. lOo, b, 1933; Special Publ. No. 9, p. 147, pi. 19, fig. 31, 1937. 



Test small, tapering only at the ends, greatest breadth rather 

 rapidly attained after which the sides are nearly parallel for most of 

 their length, periphery slightly rounded, test in end view elliptical; 

 chambers fairly distinct, not greatly inflated, of rather uniform size 

 and shape in the adult, increasing only slightly in size as added; 

 sutures distinct, very slightly depressed, forming a very slight angle 

 with the horizontal in the early stages and increasing slightly but 

 gradually as chambers are added; wall smooth, distinctly perforate; 

 aperture small, at the base of the inner margin of the last-formed 

 chamber, forming a distinct re-entrant in the apertural face but not 

 strongly contracted at the base. Length, 0.60 mm.; breadth, 0.25 

 mm.; thickness, 0.12 mm. 



The types are from Albatross station H3S38, lat. 16°57'00" S., 

 long. HS^'SS'OO" W., in 2,224 fathoms, vol. m. glob. 



