TROPICAL PACIFIC FORAMENIFERA OF "ALBATROSS" 



13 



ticularly in the adult biserial portion, which consists usually of only 

 about four chambers; sutures distinct, slightly depressed; wall smooth, 

 Imely perforate; aperture elongate in the adult, often failing to reach 

 the base of the apertural face, but continuing on to the terminal end 

 of the test. Length, up to 1.00 mm.; breadth, 0.20-0.25 mm.; thick- 

 ness, 0.18-0.20 mm. 



Specimens that may be referred to this species, which is common 

 in the Mediterranean region, occurred abundantly at only one of the 

 shallow-water stations. Port Lotten, Kersail, Caroline Islands. Speci- 

 mens occurred also at Albatross station H3838, lat. 16°57'00" S., long. 

 148°58'00" W., in 2,224 fathoms, vol. m. glob. 



VIRGUUNA COMPLANATA Egger 



Plate 4, Figures 2-5 



Virgvlina schreibersiana Czjzek var. complanata Egger, Abh. kon. bay. Akad. 

 Wiss. Muncheu, CI. ii, vol. 18, p. 292, pi. 8, figs. 91, 92. 1893.— Cushman, 

 Contr. Cushman Lab. Foram. Res., vol. 8, p. 11, pi. 2, figs. 6a, h, 1932. — 

 Earland, Discovery Reports, vol. 10, p. 131, pi. 5, figs. 54, 55, 1934. 



VirguUna subsquammosa Cushman (not Egger), Carnegie Inst. Washington 

 Publ. 342, p. 26, 1924. 



VirguUna complanata Cushman, Cushman Lab. Foram. Res. Special Publ. No. 9, 

 p. 26, pi. 4, figs. 13-17, 1937. 



Test elongate, slender, tapering throughout, greatest breadth 

 formed by the last pair of chambers, strongly compressed, earliest 

 portion somewhat twisted, later distinctly biserial; chambers in- 

 creasing in height and length as added, later ones somewhat inflated; 

 sutures distinct, depressed, oblique, slightly curved; wall smooth, 

 finely perforate; aperture elongate, comparatively broad, slightly 

 curved, extending to the base of the inner margin of the last-formed 

 chamber. Length, 1.50 mm.; breadth, 0.40 mm.; thickness, 0.25mm. 



Our only specimens of this species are from Albatross stations, data 

 for which are given in table 5. The types described by Egger are 

 from off West Australia in 90-359 meters. 



Table 5. — VirguUna complanaia — material examined 



