EXPLANATION OF PLATE 36 (XXXVI) 



Fig. 1, X 15; Fig. 2, X 30; Fig. 3, X 50; Figs. 4, 5, X 15; Figs. 6, 7, X 30; 

 Figs. 9-15, X 50; Figs. 16-18, X 100. 

 Figure 1. — Placopsilina bradyi Cushman and McCulloch.* 



Challenger Sta. 195A, off Amboyna, E. Indies. (15-20 fathoms) 

 Referred by Brady to P. cenomana d'Orbigny and to P. bradyi by Cushman and McCulloch, Univ. S. Calif. 

 Publ., Allan Hancock Pacific Exped., Vol. 6, 1939, p. 112. 

 Figures 2, 3. — Placopsilina confusa Cushman.* 



Fig. 2. Porcupine Sta. 12, West of Ireland, Atlantic. 



Fig. 3. Challenger Sta. 122, S.E. of Pernambuco. Atlantic. (350 fathoms) 

 Referred to P. cenomana d'Orbigny by Brady and to P. confusa by Cushman, U.S.N.M. Bull. 104, Pt. 2, 

 1920, p. 71. 

 Figures 4-6. — Bdelloidina aggregata Carter. 



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

 M.K. Elias (Jour. Pal., Vol. 24, No. 3, 1950, p. 301) referred these figures to B. aggregata var. bradii, since 

 Brady shows the presence of secondary septa not figured or noted by Carter in aggregata. Loeblich and Tappan 

 (Smith. Misc. Coll., Vol. 128, No. 5, 1955, p. 22) have redescribed Bdelloidina and placed var. bradii Elias in 

 synonymy with typical B. aggregata Carter. 

 Figures 7-18. — Thurammina papiUata Brady, variations. 



Fig. 7. Challenger Sta. 122, S.E. of Pernambuco, Atlantic. (350 fathoms) 

 Figs. 8, 15. Porcupine Sta. 23, West of Ireland, Atlantic. (630 fathoms) 

 Figs. 9-11. Challenger Sta. 120, off Pernambuco, Atlantic. (675 fathoms) 

 Figs. 12, 14. Challenger Sta. 160, Southern Ocean. (2600 fathoms) 

 Fig. 13. Challenger Sta. 323, South Atlantic. (1900 fathoms) 

 Figs. 16-18. Porcupine Sta. 24, Off Ireland. 

 Heron-Allen and Earland, in 1917 (Jour. Roy. Micr. Soc, pp. 530-557), gave a detailed study of this species. 

 They regard all Brady's figured specimens as being abnormal, and suggest that fig. 8 approaches var. parallela 

 Heron-Allen and Earland; fig. 9 is probably a form of var. castanea Heron-Allen and Earland, and figs. 13, 14 

 represent var. haeusleri Heron-Allen and Earland. Thalmann (Eclog. geol. Helvet., Vol. 26, No. 2, 1933, p. 

 252) refers all Brady's figs. 7-18 to Thurammina castanea Heron-Allen and Earland, apparently based on a 

 reference to Heron-Allen and Earland, Discovery Reports, Vol. 4, Foraminifera Part I, 1932, p. 328. However 

 Earland later (1. c, Foraminifera Part II, 1933, p. 66) refers Brady's figs. 7, 8 to T. papiUata Brady and figs. 

 13, 14 to Thurammina haeusleri Heron-Allen and Earland. Again, in Discovery Reports, Vol. 10, 1934, Fora- 

 minifera Part III, pp. 70-71 he raises the former varieties of Heron-Allen and Earland 1917 to specific rank, 

 but makes no further references to Brady's figures. In 1933 he states that he reduces the number of varietal 

 names, employing specific names for purposes of convenience, but does not believe them to be true species in 

 the case of Thurammina. 



*NoTE: Confusion exists here. Cushman and McCulloch in 1939 refer all of Brady's figures 1-3 to P. bradyi, ignoring Cushman's 1920 

 account of P. confusa, in which he refers Brad\'s fig. 3 to that species. Thalmann first referred fig. 3 to P. conjusa (1932), then figures 

 figs. 2, 3 to that species (1937), following Earland (Discovery Reports, Vol. 10, 1934, Foraminifera Pt. Ill, p. 94) (as is followed here), 

 and later (in 1942, Amer. Midland Nat., Vol. 28, p. 463) transferred all three figures to P. bradyi, following Cushman and McCulloch, 

 1939. 



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