32 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 6 



Pearcey, Trans. Roy. Soc. Edinburgh, vol. 49, 1914, p. 998. — Heron- 

 Allen and Earland, Trans. Linn. Soc. London, vol. 11, pt. 13, 1916, 

 p. 221.— Cushman, Bull. 104, U. S. Nat. Mus., pt. 1, 1918, p. 15, 

 pi. 6, fig. 1 ; pi. 7, fig. 1 ; 1. c. Bull. 100, vol. 4, 1921, p. 36, pi. 1, fig. 

 2. — Heron-Allen and Earland, British Antarctic Exped., Zoology, vol. 

 6, 1922, p. 91. — Chapman, Union of So. Africa, Fish. Mar. Biol. Surv., 

 Rept. no. 3, for 1922 (1924), p. 8.— Cushman, Bull. Scripps Instit. 

 Oceanography, Tech. Ser., vol. 1, no. 10, 1927, p. 128. — Lacroix, Bull. 

 Instit. Oceanographique, no. 527, 1928, p. 5, fig. 1 (in text). — Wiesner, 

 Deutsche Sud-Polar-Exped., vol. XX, Zool., 1929, p. 77.— Hofker, 

 Siboffa-Exped., Mon. IVa, 1930, p. 107, pi. 42, figs. 5-11; pi. 43, figs. 

 3, 4, 6. — Heron-Allen and Earland, Discovery Rep'ts, vol. IV, 1932, 

 p. 334.— Cushman, Bull. 161, U. S. Nat. Mus., pt. 1, 1932, p. 4; 

 Special Publ. no. 5, Cushman Lab. Foram. Res., 1933, pi. 1, fig. 9. — 

 Earland, Discovery Rep'ts, vol. X, 1934, p. 76; vol. XIII, 1936, p. 30. 



Rhabdammina abyssorum, var. robusta Goes, Kongl. Svenslc. Vet. 

 Akad. Handl., vol. 19, no. 4, 1882, p. 143, pi. 12, figs. 430, 431. 



Astrorhiza abyssorum Eimer and Fickert, Zeitschr. Wiss. Zool., 

 vol. 65, 1899, p. 666. 



Test free, consisting of a central subglobular chamber vv^ith typically 

 three radiating arms, varying in number to five, of nearly uniform 

 diameter, with no divisions; when three, usually in the same plane but 

 the accessory arms above this number often added in a dififerent plane; 

 wall of sand grains, firmly cemented, with a reddish-brown cement 

 often giving a decided tinge of color to the whole test, interior fairly 

 smooth and reddish from the color of the cement, exterior roughly fin- 

 ished; apertures formed by the circular openings at the ends of the 

 tubular arms. Our specimens with the arms measure up to 8.00 mm or 

 more. 



The species occurs rarely at localities 82, 290, 482, 488. 



Distribution. — Off Long Point, Catalina, 147 fms. ; southeast of San 

 Marcos Island, Lower California, Mexico, 25 fms.; Galapagos Islands. 



Family Rhizamminidae 

 Genus RHIZAMMINA H. B. Brady, 1879 

 Rhizammina sp? 

 There are fragments which seem to belong to this genus from sta- 

 tions 481 and 488, but in each case only a single specimen was found. 

 They resemble R. indivisa H. B. Brady. 



