TROPICAL PACIFIC FORAMINIFERA OF "ALBATROSS" 65 



the Fiji Islands. The distribution is as follows: Levuka, Fiji, 12 

 fathoms; off Nairai, Fiji, 12 fathoms; Mokaujar Anchorage, Fiji; 

 Vavau Anchorage, Tonga Islands, 18 fathoms; Makemo Lagoon, 

 Paumotu Islands; Rongelap Atoll, Marshall Islands; and 21 fathoms, 

 Guam Anchorage, Ladrone Islands. Single, small, partially developed 

 specimens occurred at Albatross Stations H3843, Point Venus, Tahiti 

 Island, 55° S., 3.8 miles E., in 807 fathoms, and II3935, Hereheretue 

 Atoll, 1 mile W., in 594 fathoms. 



Genus AMPHISORUS Ehrenberg, 1840 



Amphisorus Ehrenberg, Abh. Akad. Wiss. Berlin, 1838, p. 130, 1840. 

 Synonym: Orbitolites (part) of authors (not Lamarck). 



Genoholotype. — Amphisorus hemprichii Ehrenberg. 



Test discoid, planispiral in the early stages at least of the micro- 

 spheric form, later annular, completely divided into chamberlets, 

 typically in two layers, those of each annular chamber communicating 

 with the adjacent ones of the preceding and succeeding annular 

 chambers and those of the two layers communicating; wall imperfo- 

 rate except in the very early chambers; apertures in a double alter- 

 nating line along the periphery. Miocene to Recent. 



AMPHISORUS HEMPRICHH Ehrenberg 



Amphisorus hemprichii Ehrenberg, Abh. Akad. Wiss. Berlin, 1838, p. 134, pi. 3, 

 fig. 3, 1840.— CusHMAN, U. S. Nat. Mus. Bull. 104, pt. 7, p. 51, pi. 18, figs. 

 5-7, 1930. 



"Orbitolites, duplex type," W. B. Carpenter, Philos. Trans., vol. 146, p. 120, 

 pi. 5, fig. 10; pi. 9, fig. 10, 1856. 



Orbitolites duplex W. B. Carpenter, Rep. Voy. Challenger, Zoology, pt. 21, p. 25, 

 pi. 3, figs. 8-14; pi. 4, figs. 6-10; pi. 5, figs. 1-13, 1883.— H. B. Brady, Rep. 

 Voy. Challenger, Zoology, vol. 9, p. 216, pi. 16, fig. 7, 1884.— W. B. Carpen- 

 ter, Journ. Quekett Micr. Club, ser. 2, vol. 2, p. 97, fig. 9 (in text), 1885. — 

 Woodward, The Observer, vol. 4, p. 77, 1893.— Flint, U. S. Nat. Mus. Rep. 

 for 1897, p. 305, pi. 51, figs. 2, 3, 1899.— Chapman, Journ. Linn. Soc. Zool., 

 vol. 28, p. 400 (hst), 1902. — Sidebottom, Mem. Proc. Manchester Lit. Philos. 

 Soc., vol. 48, no. 5, p. 23, 1904. — Dakin, Rep. Pearl Oyster Fish. Cej'lon, 

 1906, p. 232.— Rhumbler, Zool. Jahrb., Abt. Syst., vol. 24, p. 53, 1906.— 

 Sidebottom, Mem. Proc. Manchester Lit. Philos. Soc, vol. 54, no. 16, p. 7, 

 1910. — Heron-Allen and Earland, Trans. Zool. Soc. London, vol. 20, p. 

 605, 1915.— Cushman, U. S. Nat. Mus. Bull. 71, pt. 6, p. 94, pi. 38, figs. 3, 

 4; pi. 39, fig. 1, 1917; Carnegie Inst. Washington Publ. 213, p. 290, 1918; 

 Carnegie Inst. Washington Publ. 291, p. 70, pi. 5, figs. 9, 10, 1919; Proc. U. S. 

 Nat. Mus., vol. 59, p. 77, 1921; U. S. Nat. Mus. Bull. 100, vol. 4, p. 485, 

 1921. — Heron-Allen and Earland, Bull. Soc. Sci. Hist. Nat. Corse, 1922, 

 p. 125.— Cushman, Carnegie Inst. Washington Publ. 311, p. 81, 1922; Publ. 

 342, p. 71, 1924. — Heron-Allen and Earland, Journ. Linn. Soc. Zool., 

 vol. 35, p. 610, 1924. — Cushman, Carnegie Inst. Washington Publ. 344, p. 

 84, 1926. — Heron-Allen and Earland, Trans. Zool. Soc. London, vol. 22, 

 pt. 1, p. 69 (list), 1926. 



