FORAMINIFERA OF THE NORTH PACIFIC OCEAN. 55 



Description. — Test compressed, at least twice as long as wide typic- 

 ally, chambers biconvex, the peripheral margin strongly carinate, wall 

 smooth; apertural end considerably extended beyond the rest of the 

 test in a sub-cylindrical slightly tapering neck, with a slight lip; 

 aperture oval or elliptical with the tooth inconspicuous. 



Length slightly less than 1 mm. 



Distribution. — The records for this species are mainly from the 

 Indo-Pacific region in comparatively shallow water. The only 

 material I have had is from Hongkong Harbor in shallow water. 



Although Brady starts his description with "Test Triloculine" the 

 figures he gives are not triloculine, and those of Millett seem to in- 

 dicate that possibly the species belongs to the genus Massilina, for 

 his figure 12, above noted, has the final chambers distinctly in one 

 plane. None of the specimens seem to be at all triloculine, thus sub- 

 stantiating the view already expressed that Massilina is a direct 

 derivative from Quinqueloculina. 



QUINQUELOCULINA MACILENTA (H. B. Brady). 



Miliolina macilenta, H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 167, pi. 7, figs. 5, 6. 



Description. — "Test complanate, oval or discoidal; margin thin; 

 resembling Miliolina [Quinqueloculina] in general contour and habit, 

 but having a surface ornament of curved, parallel, longitudinal or 

 somewhat obliquely-set costae. 



"Length, one-fortieth inch (0.6 mm.)." 



Distribution. — Brady described this species from three Pacific 

 Stations of the Challenger, one of which, in 40 fathoms off Honolulu, 

 Hawaiian Islands, is in the North Pacific, the others being in the 

 South Pacific, Nares Harbor, Admiralty Islands, of 17 fathoms, 

 and Humboldt Bay, New Guinea, 37 fathoms. 



QUINQUELOCULINA RETICULATA (d'Orbigny). 

 Plate 16, figs. 1-3. 



" Frumentaria reticulata" Soldani, Testaceographia, vol. 1, pt. 3. 1795, p. 233, 

 pi. 159, figs, bb, cc. 



Triloculina reticulata d'Orbigny, Ann. Sci. Nat., vol. 7. 1826, p. 299, No. 9. 



Quinqueloculina reticulata Karrer, Sitz. Akad. Wiss. Wien, vol. 44, 1861, p. 449, 

 pi. 2, fig. 5a, c. 



Miliolina reticulata Parker, Jones, and Brady, Ann. Mag, Nat. Hist., ser. 4. 

 vol. 8, 1871, p. 249, pi. 8, fig. 18.— H. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 177, pi. 9, figs. 2-4. — Egger, Abhandl. kong. bay. 

 Akad. Wiss. Munchen, CI. n, vol. 18. 1893, p. 239, pi. 2, figs. 83,84— Schlum- 

 berger. Mem. Soc. Zool. France, vol. 6, 1893, p. 214, text fig. 25, pi. 2, fig. 62. 



Description. — Test chiefly characterized by the reticulate charac- 

 ter of the ornamentation consisting of oval depressions arranged in 



