TROPICAL PACIFIC FORAMINIFERA OF ALBATROSS 17 



tural end, the whole rounded ; aperture circular, with a fairly large 

 tooth ; color yellowish brown. Length, up to 1.5 mm. 



This species was described from Samoa, where it occurred at sev- 

 eral stations. The species has been usually recorded from the Pacific 

 as Clavulina angularis. It is, however, a very different species from 

 that of d'Orbigny and also from C. tricarinata, which is characteristic 

 of the West Indian region. It is apparently not so common in the 

 shallow water of the Pacific as the following species, C. difformis H. 

 B. Brady. Typical specimens of C pacifica were obtained from 

 Rangiroa and from Makemo Lagoon, Paumotu Islands, specimens 

 from both localities being figured here. 



CLAVULINA DIFFORMIS H. B. Brady 



Plate 4, Figures 5, 6, 8, 10 



Clavulina angularis d'Orbigny var. difformis H. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, p. 396, pi. 48, figs. 25-31, 1884— Heron-Allen and Earland, 

 Trans. Zool. Soc. London, vol. 20, pt. 2, p. 637, pi. 48, figs. 20-22, 1915.— 

 Cushman, U. S. Nat. Mus. Bull. 100, vol. 4, p. 156, pi. 31, figs. 2 a, o, 1921. 



Clavulina diffoitnis Cushman, Carnegie Inst. "Washington Publ. 342, p. 23, 

 pi. 6, figs. 5, 6, 1924. 



Test elongate, somewhat tapering, usually polygonal, the sides con- 

 cave, early triserial portion short, angles of the test sharp, slightly 

 produced; chambers numerous, distinct, slightly inflated; sutures 

 distinct, depressed, curved ; wall arenaceous, rather roughly finished ; 

 aperture circular, with a distinct tooth, the last-formed chamber 

 short and at the apertural end broadly truncate or even slightly de- 

 pressed. Length, up to slightly more than 1 mm. 



Brady described this as a variety of Clavulina angularis. It is, 

 however, a distinct species developed in the Indo-Pacific region. 

 The test is typically polygonal in end view, and the wall is very dis- 

 tinctly roughened, the chambers slightly inflated and often having 

 distinct angular projections, which overlap the preceding chamber. 

 Previous records include Nares Harbor, Admiralty Islands (Brady) ; 

 Kerimba Archipelago, southeast coast of Africa (Heron-Allen and 

 Earland) ; Apra Bay, Guam, and Samoa (Cushman) . In the present 

 collections typical specimens occurred at Guam Anchorage, Ladrone 

 Islands, 21 fathoms; Mokaujar Anchorage, Fiji Islands, Vavau An- 

 chorage, Tonga Islands; and Makemo Lagoon, Paumotu Archipelago. 



Family MILIOLIDAE 



Genus QUINQUELOCULINA d'Orbigny, 1826 



Quinqueloculina d'Orbigny, Ann. Sci. Nat., vol. 7, p. 301, 1S26. — Cushman, U. S. 

 Nat. Mus. Bull. 71, pt. 6, p. 42, 1917 ; Cushman Lab. Foram. Res. Spec. Publ. 

 No. 1, p. 146, 1928; U. S. Nat. Mus. Bull. 104, pt. 6, p. 21, 1929. 



