TROPICAL PACIFIC rORAMLNIFERA OF "ALBATROSS" 



25 



This small species has occurred only in the Albatross material from 

 the deeper-water stations, no specimens at all having been found in 

 any of the shallow-water stations around any of the islands. It 

 may be distinguished by its straight sutures, nearly parallel sides, 

 and the increase in obliquity of the sutures from the early stages to 

 the adult. 



Table 10. — Bolivina oceanica — material examined 



BOLIVINA NITIDA H. B. Brady 



Plate 7, Figure 5 



Bolivina nitida H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, p. 420, pi. 

 52, fig.s. 30a, h, 1884. — Jensen, Proc. Linn. Sec. New South Wales, vol. 29, 

 p. 812, 1904. — CusHMAN, Cushman Lab. Foram. Res. Special Publ. No. 9, 

 p. 136, pi. 17, fig. 25, 1937. 



Test elongate, 2}i to 3 times as long as broad, very much compressed; 

 chambers becoming much broader as added, the inner margin high, 

 thence tapering to the acute periphery, periphery slightly rounded 

 or even slightly carinate; sutures distinct, limbate, very little if at 

 all depressed, very strongly oblique backward or slightly sigmoid 

 especially in the later chambers; wall smooth, very finely perforate; 

 aperture large, elongate, taking up nearly the whole of the inner 

 margin of the last-formed chamber. Length, up to 1.00 mm. ; breadth, 

 0.35-0.40 mm.; thickness, 0.10-0.12 mm. 



The records for this species are few. It was originally described 

 by Brady from Challenger material from East Moncoeur Island, Bass 

 Strait, 38 fathoms, and from off Raine Island, Torres Strait, 155 

 fathoms. It was recorded as rare at both localities. Jensen's record 



