14 PROCEEDINGS OF THE NATIONAL MUSEUM vol.67 



Siphogenerina dimorpha Egger, Abh. kon. bay. Akad. Wiss. Miinchen, 

 CI. II, vol. 18, 1893, p. 317, pi. 9, fig. 30.— Cushman, Bull. 71, U. S. Nat. 

 Mus., pt. 3, 1913, p. 106, pi. 45, figs. 3, 4; Bull. 100, pt. 4, 1921, p. 279, 

 pi. 56, fig. 8. 



Description. — Variety differing from the typical in the greater 

 number of uniserial chambers, the cylindrical form of the test, and 

 the much more prominent depressions at the base of the chambers 

 along the sutures. 



Distribution. — This variety is widely distributed in the Pacific. 

 Parker and Jones had it from the Red Sea (near the Isle of Shad- 

 wan) and Australian coral reefs. Brady had it from off Tahiti, the 

 Ki Islands, and off Kandavu, Fiji. It has occurred off the Hawaiian 

 Islands (Bagg, Cushman), and I have had it from several stations 

 in the western Pacific off Japan and the Bonin Islands, as v/ell as a 

 few stations in the Pliilippines. Sidebottom records it off the eastern 

 coast of Australia, and Heron- AUen and Earland from several stations 

 off New Zealand. Egger's only station is in the western part of the 

 Indian Ocean. 



The only fossil records for this area is that of Schubert, who re- 

 corded it in a Glohigerina marl of late Tertiary age from Panaras in 

 the Bismarck Archipelago and Koch, who records it from the late 

 Tertiary of Kabu, Java. 



It may be noted here that Halkyard records this species as occur- 

 ring in the Blue Eocene Marl of Biarritz. ^^ Heron-Allen and Earland 

 note: "The specimens are longer, thinner in the shell wall, and the 

 cusps between the chambers are much less pronounced than in 

 recent types, but in other features they agree tolerably well with 

 Sagrina dimorpha Parker and Jones." It would seem, then, as though 

 these Eocene specimens may represent a varietal form more closely 

 allied to the typical Atlantic form than to the Pacific variety. 



SIPHOGENERINA VIRGULA (H. B. Brady) 



Plate 2, figs. 7, 8; plate 4, figs. S, 9 



Sagrina virgula H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 275, 

 pi. 8, figs. 19-21; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 533, 

 pi. 76, figs. 4-7 (not 8-10). — Millett, Journ. Roy. Micr. Soc, 1903, 

 p. 271. — Heron-Allen and Earland, Trans. Zool. Soc. London, vol. 

 20, 1915, p. 676, pi. 51, figs. 4, 5. — Sidebottom, Journ. Roy. Micr. Soc., 

 1918, p. 148. — ^Heron-Allen and Earland, British Antarctic {Terra 

 Nova) Exped., Zoology, vol. 6, 1922, p. 186. 



Siphogenerina {Sagrina) virgula Egger, Abh. kon. Baj". Akad. Wiss. Miin- 

 chen, CI. II, vol. 18, 1893, p. 318, pi. 9, fig. 27. 



Siphogenerina virgula Cushman, Publ. 342, Carnegie Inst. Washington, 1924, 

 p. 29, pi. 8, figs. 3, 4. 



Description. — Test elongate, somewhat tapering, composed of a 

 number of inflated chambers, the early ones in a uvigerine arrange- 

 ment, later ones uniserial, the uniserial portion making up most of 



» Mem. Proc. Manchester Lit. Philos. Soc, vol. 02, 1919, p. 39. 



