EXPLANATION OF PLATE 10 (X) 



Figs. 1, 2, X 30; Figs. 3-5, X 40; Fig. 6, X 75; Figs. 7-20, X 50; Figs. 21-23, X 30; Figs. 24-26, X 75. 

 Figures 1, 2. — Spiroloculina sp. nov. 



Challenger Sta. 189, S. of Papua, Pacific. (25-29 fathoms) 

 Referred by Brady to 5. limbata d'Orbigny var. This form is probably closer to 5. depressa d'Orbigny than 

 to any other species but differs in being more compressed, and in the very long narrow aperture. It is regarded 

 as new and the name 5. bradyi is proposed. 

 Figures 3, 4. — Spiroloculina communis Cushman and Todd. 



Challenger Sta. 217A, S. of Papua, Pacific. (37 fathoms) 

 Referred by Brady to 5. impressa Terquem and by Cushman and Todd (C.L.F.R., Spec. Publ. No. 11, 1944, 

 p. 63) to 5. communis. 

 Figures 5, 6. — Spiroloculina tenuiseptata Brady. 



Fig. 5. Challenger Sta. 191A, Kii Islands, Japan. (580 fathoms) 

 Fig. 6. Challenger Sta. 174B, off Fiji, Pacific. (610 fathoms) 

 Figures 7, 8, 11. — "Sigmoilina" tenuis (Czjzek). 



Challenger Sta. 302, South Pacific. (1450 fathoms) 

 Referred by Brady to Spiroloculina and by Cushman, Earland and others to Sigmoilina. As noted earlier 

 Wiesner placed Planispirina sigmoidea Brady, the genotype of Sigmoilina, in Nummoloculina, hence a new 

 generic name is required for tenuis. 

 Figures 10, 9? — Spirophthalmidium pusillum (Earland). 



Challenger Sta. 332, South Atlantic. (2200 fathoms) 

 Referred by Brady to Spiroloculina tenuis (Czjzek) and by Earland (Discovery Repts., Vol. 10, 1934, p. 47) 

 to 5. pusilla nov. Transferred by Cushman and Todd (C.L.F.R., Spec. Publ. No. 11, 1944, p. 76) to Spiroph- 

 thalmidium Cushman 1927, which genus was shown by Macfadyen (Jour. Roy. Micr. Soc, Ser. 3, Vol. 59, 

 1939, p. 164) to be synonymous with Ophthalmidium Zwingli and Kiibler 1870. Wood and Barnard have subse- 

 quently reinstated Spirophthalmidium Cushman (Q.J.G.S., Vol. 102, 1946, p. 84), with Spiroloculina acuti- 

 margo Brady as genotype, and are followed here. 

 Figure 12. — Spiroloculina elevata Wiesner. 



Challenger Sta. 185, Torres Strait, Pacific. (155 fathoms) 

 Referred by Brady to 5. acutimargo Brady, and by Wiesner (Die Miliol. der ostlich. Adria, Prague, 1923, 

 p. 36) to 5. elevata. These figures have also been referred to 5. affixa Terquem and 5. disparilis Terquem by 

 authors. 

 Figure 13. — Spirophthalmidium acutimargo (Brady). 



Challenger Sta. 120, off Pernambuco, W. Atlantic. (675 fathoms) 

 Referred by Brady to Spiroloculina and by Cushman (C.C.L.F.R., Vol. 3, No. 1, 1927, p. 37) to Spiroph- 

 thalmidium, as genotype. As noted above under fig. 10, Macfadyen regarded Spirophthalmidium as a synonym 

 of Ophthalmidium Zwingli and Kiibler, but Wood and Barnard (loc. cit. supra, 1946) have reinstated Cushman's 

 genus for 5. acutimargo. 

 Figure 14. — Spiroloculina sp. abnorm. 



Challenger Sta. 174A, off Fiji, Pacific. (255 fathoms) 

 Referred by Brady to S. acutimargo Brady, and to 5. tenuirostra Karrer by Heron-Allen and Earland, Jour. 

 Linn. Soc, Vol. 35, 1924, p. 604. (See note to fig. 15 below). 

 Figure 15. — Spiroloculina venusta Cushman and Todd. 



Challenger Sta. 185A, Torres Strait, Pacific. (3-11 fathoms) 

 Referred by Brady to 5. acutimargo Brady, and by Thalmann (Eclog. geol. Helv., Vol. 25, No. 2, 1932, p. 

 297) to S. tenuirostra Karrer var. Since tenuirostra Karrer has been referred to Quinqueloculina by Cushman 

 and Todd (1. c. supra, 1944, p. 77) a new name would be required. Since it appears to fall within the limits 

 of variation of 5. venusta Cushman and Todd 1944, however, it has been so identified here. 

 Figures 16, 17, 22, 23. — Spiroloculina angulata Cushman. 



Fig. 16. Challenger Sta. 172, Friendly Islands, Pacific. (18 fathoms) 

 Fig. 17. Challenger Sta. 218A, Admiralty Islands, Pacific. (16-25 fathoms) 

 Fig. 22. Shell Cove, Port Jackson, Australia. 



Fig. 23. Challenger Sta. 187A, Booby Island, Torres Strait, Pacific. (8 fathoms) 

 Referred by Brady to 5. grata Terquem and by Cushman and Todd (C.L.F.R., Spec. Publ. No. 11, 1944, 

 p. 50) to 5. angulata Cushman {S. grata var. angulata Cushman 1917). 

 Figures 18-20. — Nodobaculariella convexiuscula (Brady). 

 Challenger Sta. 185, Torres Strait. (155 fathoms) 

 Referred to Spiroloculina (?) by Brady but placed in Nodobaculariella by Cushman and Todd, C.L.F.R. 

 Spec. Publ. No. 11, 1944, p. 75. 

 Figure 21. — Spiroloculina antillarum d'Orbigny. 



Challenger Sta. 122, S.E. of Pernambuco, Atlantic Ocean. (350 fathoms) 

 Figures 24-26. — Haucrina speciosa (Karrer). 



Fig. 24. Challenger Sta. 218A, Admiralty Islands. (16-25 fathoms) 

 Figs. 25-26. Challenger Sta. 260A, Hawaii. (40 fathoms) 

 Referred to Spiroloculina by Brady but placed in Hauerina by Cushman, C. C.L.F.R., 1946, Vol. 22, Pt. l,p. 5. 



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