EXPLANATION OF PLATE 45 (XLV) 



Figs. 1-8, X 20; Figs. 9-16, X 14; Fig. 17, X 50; Figs. 18-24, X 60; 

 Fig. 25, X 100; Figs. 26-27, X 100. 

 Figures 1-8. — Vulvulina pennatula (Batsch 1791). 



Figs. 1, 3, 5, 7. Challenger Sta. 24, West Indies. (390 fathoms) 

 Figs. 2, 4. Challenger Sta. 23, West Indies. (450 fathoms) 

 Fig. 6. Porcupine Sta. 27, Northwest of Ireland, N. Atlantic. 

 Fig. 8. Challenger Sta. 33, off Bermuda, Atlantic. (435 fathoms) 

 Figs. 1-4 referred by Brady to Bigenerina capreolus (d'Orbigny) and by Fornasini, 1902 (Mem. Accad. Sci. 

 1st. Bologna, Ser. V, Vol. 10, p. 14) to Vulvulina pennatula (Batsch). Figs. 5-8 referred by Brady to Bigenerina 

 pennatula (Batsch) and by Fornasini (1. c, 1901) to Vulvulina. Silvestri (Mem. Pont. Accad. Rom. N. Lincei, 

 Vol. 22, 1904, p. 242) refers figs. 3, 4 of Brady to Spiroplecta corrugata (Costa), a fossil form from Italy, but 

 examination of a series from Challenger Sta. 24, confirms Brady's opinion that these figures represent the young 

 stage of pennatula. Figs. 1-4 represent the microspheric form and figs. 5-8 the megalospheric. 

 Figures 9-16. — Cribrogoesella robusta (Brady). 



Figs. 9, 14-16. Challenger Sta. 24, West Indies. (390 fathoms) 

 Figs. 10-13. Challenger Sta. 122, S.E. of Pernambuco, Atlantic. (350 fathoms) 

 Referred to Bigenerina by Brady and made the genotype of a new genus Cribrogoesella, by Cushman in 1935 

 (Smith. Misc. Coll., Vol. 91, No. 21, p. 4). 

 Figures 17, 19-21. — Pavonina flabelliformis d'Orbigny. 



Fig. 17. Challenger Sta. 260A, Honolulu, Pacific. (40 fathoms) 

 Figs. 19, 20. Tamatave, Madagascar, Indian Ocean. 

 Hofker (Foraminifera Siboga Exped., Pt. Ill, 1951, p. 35) selected this as the genotype of Valvopavonina, 

 but as it is already the type of Pavonina d'Orbigny (monotypic), Valvopavonina becomes an isotypic junior 

 synonym of d'Orbigny's genus. 

 Figure 18. — Pavonina atlantica Cushman. 



Challenger Sta. 24, West Indies. (390 fathoms) 

 Placed in P. flabelliformis d'Orbigny by Brady, and referred to Pavonina atlantica by Cushman (U.S.N.M., 

 Proc, Vol. 67, Art. 25, 1922, p. 21). 

 Figures 22, 23. — Spiroplectella earlandi nom. nov. 



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

 Referred by Brady to Spiroplecta annectens (Parker and Jones), which was designated the genotype of Spiro- 

 plectinata by Cushman (Foram., Class, and Econ. Use, 1st. ed., 1928, p. 235). This is a Cretaceous species 

 and Earland (Discovery Repts., Vol. 10, Foram. Pt. Ill, 1934, p. 113) has shown that it differs generically and 

 specifically from the Recent species figured by Brady. He transferred the latter to Spiroplectella, retaining the 

 specific name of annectens. Loeblich and Tappan (personal communication) have pointed out that annectens 

 should then be attributed to Earland, not Brady, and that to avoid confusion it is preferable to propose a new 

 name. Spiroplectella earlandi nom. nov. is therefore proposed for this species. 

 Figure 24. — Spiroplectammina sp. nov. 



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

 Referred by Brady to Spiroplecta americana Ehrenberg. Thalmann refers this to "Spiroplectammina sp. nov. 

 afT. Spiroplecta americana Brady non Ehrenberg" (Eclog. geol. Helvet., Vol. 25, No. 2, 1932, p. 301). 

 Figures 25-27. — Spiroplectammina biformis (Parker and Jones). 



Fig. 25. Challenger Sta. 285, South Pacific. (2375 fathoms) 

 Figs. 26, 27. Challenger Sta. 323, South Atlantic. (1900 fathoms) 

 Referred by Brady to Spiroplecta and made the genotype of a new genus, Spiroplectammina, by Cushman 

 (C.C.L.F.R., Vol. Ill, 1927, p. 23). 



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