TROPICAL PACIFIC FORAMINIFERA OF ALBATROSS 75 



This species seems to be widely distributed in warm coral reef 

 areas, especially in the Mediterranean and the Indo-Pacific. It is 

 an extremely variable form, and assumes many shapes. 



Our specimens are all from comparatively shallow waters, except 

 for one station off Fiji in 21 fathoms or less. They include the fol- 

 lowing stations: Off Nairai, Fiji, 12 fathoms; off Levuka, Fiji, 12 

 fathoms; off Fiji, 40-50 fathoms; Kangiroa; off Niau; Makemo 

 Lagoon; beach off wharf, Hereheretue Island; Rutavu; Vavau An- 

 chorage, Tonga Islands, 18 fathoms; Port Lotten, Kersail, Caroline 

 Islands ; and Guam Anchorage, Ladrone Islands, in 21 fathoms. 



Family FISCHERINIDAE 



Test coiled, earlier ones somewhat planispiral, later ones trochoid, 

 all coils visible from the dorsal side, only the last-formed one from 

 the ventral side; chambers distinct but not inflated, usually four or 

 five making up the last-formed coil; wall calcareous, imperforate; 

 aperture rounded, formed by the open end of the last-formed 

 chamber. 



This family is represented by the single genus Fischerina, which 

 is commonest in the warm waters of the Tropics. The family is 

 closely related to and derived from the family Ophthalmidiidae. 

 It is a direct derivative of the genus Cornuspira, assumes a trochoid 

 form, and is divided into chambers. 



Genus FISCHERINA Terquem, 1878 



Fischerina Terquem, Mem. Soc. Geol. France, ser. 3, vol. 1, p. 80, 1878. — Cush- 

 man, Cushman Lab. Foram. Res. Spec. Publ. No. 1, p. 170, 192S ; U. S. 

 Nat. Mus. Bull. 104, pt. 6, p. 100, 1929. 



Genoholotype. — Fischerina rhodiensis Terquem. 



Test coiled in a low conical spiral ; chambers few in each coil, all 

 visible from the dorsal side, only those of the last-formed coil from 

 the ventral side; wall calcareous, imperforate; aperture formed by 

 the open end of the last-formed chamber, simple. 



The species of this genus are mostly confined to shallow warm 

 water of the Tropics. 



Our material has yielded three species of this genus, all of them 

 apparently different from the West Indian one. 



FISCHERINA PELLUCIDA Millett 



Plate 17, Figures 7 a-c 



Fischerina pellucida Millett, Journ. Roy. Micr. Soe., 1898, p. 611, pi. 13, figs. 14, 

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

 p. 591, 1915.— Cushman, Proc. U. S. Nat. Mus., vol. 56, p. 636, 1919 ; Carnegie 

 Inst. Washington Publ. 342, p. 53, pi. 19, fig. 9, 1924.— Heron-Allen and 

 Earland, Journ. Linn. Soc. Zool., vol. 35, p. 610, 1924. 

 91513—32 6 



