FOBAMINIFERA OF THE NORTH PACIFIC OCEAN. 47 



tracted; aperture elongate oval, with a simple tooth, thickened some- 

 what at the tip. 



Length up to and occasionally slightly exceeding 1 mm. 



Distribution. — Specimens closely approximating the figures of 

 d'Orbigny were obtained from Tuscarora stations 5/2 in 25 fathoms, 

 latitude 32° 26' N.J longitude 140° 44' E. and 60 in 63 fathoms, 

 latitude 21° 14' N.; longitude 157° 36' W.; from Albatross H3007 in 

 323 fathoms, off the Hawaiian Islands, and Nero 2033 in 249 fathoms 

 in the same region; also from Albatross D4878 in 59 fathoms; D5055 

 in 124 fathoms and D5068 in 77 fathoms, all off Japan. 



QUINQUELOCULINA CUVIERIANA d'Orbigny. 



Plate 12, fig. 2. 



Quinqueloculina cuvieriana d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 

 1839, "Foraminiferes," p. 164, pi. 11, figs. 19-21. 



Description. — Test clearly quinqueloculine, short and broad; sub- 

 circular in front view, chambers sharply angled, the sides convex, the 

 angles with usually two longitudinal costae very close to the pe- 

 ripheral angle, which is almost carinate, remainder of the chamber 

 smooth; no apertural neck developed; aperture a narrow elongate or 

 slightly curving opening, broadening slightly at the farther end, with 

 a simple linear tooth nearly the length of the aperture. 



Lenght, about 0.60 to 0.75 mm. 



Distribution. — The only specimens referable to this species are from 

 Hongkong in shallow water. 



The specimens referred to this species by Brady and Bagg from the 

 Hawaiian Islands lack the distinctive accessory carinal costae and 

 are placed under Q. lamarclciana d'Orbigny. The form figured by 

 Millett as Miliolina cuvieriana seems to be Q. disparilis of the short 

 and more rounded variety described here as var. curia. Certainly it 

 has little in common with the acute, almost carinate type of d'Orbigny, 

 although it does have costae. Millett notes that none of the figures 

 since d'Orbigny's, which have been placed under Q. cuvieriana, 

 show any traces of the secondary costae which characterize the type. 



QUINQUELOCULINA BICOSTATA d'Orbigny. 



Plate 13, fig. 1. 



Quinqueloculina bicostata d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 

 1839, p. 195, pi. 12, figs. 8-10. 



Description. — Test nearly as broad as long, chambers broad, sutures 

 usually rather indistinct, peripheral margin in the earlier chambers 

 sharply carinate, in adult specimens being bioostate, wall otherwise 

 smooth, concave adjacent to the periphery, inflated near the inner 

 margin, in end view decidedly angled; apertural end slightly if at all 



