EXPLANATION OF PLATE 68 (LXVIII), CONTINUED 



Figure 10. — Planularia cassis (Fichtel and Moll) var. nov., Thalmann. 

 Challenger Sta. 174C, off Fiji, Pacific. (210 fathoms) 

 Referred by Brady to Cristellaria and by Thalmann (1. c. supra, 1932, p. 305) to P. cassis var. nov. It appears 

 to represent an abnormal specimen. 

 Figures 11-16. — Lenticulina peregrina (Schwager). 



Figs. 11, 12, 16. Porcupine Sta.?, North Atlantic. 

 Fig. 13. Challenger Sta. 24, West Indies. (390 fathoms) 

 Figs. 14, 15. Challenger Sta. VIII, off the Canaries. (620 fathoms) 

 Referred by Brady to Cristellaria variabilis Reuss and by Cushman (U.S.N.M. Bull. 104, Pt. 4, 1923, p. 113) 

 to C. peregrina Schwager. Thalmann has transferred this species to Lenticulina. 

 Figures 17, 18, 20-23. — Saracenaria italica Defrance. 



Fig. 17. Challenger Sta. 24, West Indies. (390 fathoms) 

 Fig. 18, 20-23. Challenger Sta. 174C, off Fiji, Pacific. (210 fathoms) 

 Referred by Brady to Cristellaria, but is the genotype of Saracenaria. 

 Figure 19. — Saracenaria latifrons (Brady). 



Challenger Sta. 167, West coast of New Zealand. (150 fathoms) 

 Referred by Brady to Cristellaria and by Thalmann (1932) to Saracenaria. 



EXPLANATION OF PLATE 69 (LXIX) 



Figs. 1-4, X 20; Figs. 5, 11, 12, X 35; Fig. 6, X 40; Fig. 7, X 50; Fig. 8, 9, X 25; Fig. 10, X 16; 

 Fig. 13, X 12; Figs. 14-17, X 30. 

 Figures 1-4. — Lenticulina {Robulus) sp. 



Challenger Sta. 135, Tristan d'Acunha. (100-150 fathoms) 

 Referred by Brady to Cristellaria articulata Reuss, "wild-growing forms." These appear to be abnormal 

 specimens of doubtful identity. 

 Figure 5. — Robulus pliocaenicus (Silvestri). 



Porcupine Sta. 42, S.W. of Ireland, Atlantic. (862 fathoms) 

 Referred by Brady to Cristellaria sp. Fornasini (Boll. Soc. Geol. Ital., Vol. 19, 1900, p. 148) refers Poly- 

 morphina pliocaena Silvestri to Cristellaria and cites Brady, plate LXIX, fig. 5. The form " R. pliocaenicus'' 

 is taken from Thalmann (Eclog. geol. Helvet., Vol. 25, No. 2, 1932, p. 252). 

 Figures 6, 7. — Lenticulina convergens (BornemannJ. 



Fig. 6. Challenger Sta. 224, North Pacific. (1850 fathoms) 

 Fig. 7. Challenger Sta. 300, N. of Juan Fernandez. (1375 fathoms) 

 Referred by Brady to Cristellaria. 

 Figures 8, 9. — Lenticulina gibba (d'Orbigny). 



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

 Referred by Brady to Cristellaria, and by Thalmann (Eclog. geol. Helv., Vol. 25, No. 2, 1932, p. 305) to 

 Lenttculina. 

 Figures 10-12. — Robulus atlanticus nom. nov. 



Fig. 10. Challenger Sta. 24, West Indies. (390 fathoms) 

 Figs. 11, 12. Challenger Sta. 135, off Tristan d'Acunha. (100-150 fathoms) 

 Referred by Brady to Cristellaria articulata Reuss and by Cushman (U.S.N.M. Bull. 104, Pt. 4, 1923, p. Ill) 

 to C. lucida nov. Thalmann (Eclog. geol. Helvet. Vol. 30, No. 2, 1937, p. 341) has pointed out that lucida is 

 preoccupied by Robulina lucida Silvestri 1880, and a new name is therefore required. The name Robulus at- 

 lanticus nom. nov. is proposed. 

 Figure 13. — Robulus thalmanni Hessland. 



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

 Referred by Brady to Cristellaria rotulata (Lamarck) and by Hessland (Bull. Geol. Inst., Univ. Uppsala, 

 Vol. 31, 1943, p. 265) to Robulus thalmanni. 

 Figures 14-16. — Robulus vortex (Fichtel and Moll). 



Challenger Sta. 174C, off Fiji, Pacific. (210 fathoms) 

 Referred by Brady to Cristellaria. 

 Figure 17. — Robulus orbicularis (d'Orbigny)? 



Challenger Sta. 174C, off Fiji, Pacific. (210 fathoms) 

 Referred by Brady to Cristellaria orbicularis (d'Orbigny). Cushman has expressed doubt that Recent 

 specimens from the Pacific and Atlantic are the same as d'Orbigny's form from the Tertiary of Italy. Specimens 

 very like this from off Tasmania have been named Lenticulina {Robulus) suborbicularis by Parr (B.A.N.Z. 

 Antarctic Res. Exped., Ser. B, Vol. 5, No. 6, 1950, p. 321) and it seems possible that the present form is new 

 or a variation of that of Parr. 



Note: Bartenstein (Entwicklung der Gattung Lenticulina {Lenticulina) Lamarck 1804 mit ihren Unter-Gattungen, Senckenbergiana, 

 Vol. 29, 1948, pp. 41-65J and Parr (B.A.N.Z. Antarctic Research Expedition 1929-1931, Ser. B, Vol. 5, No. 6, 1950, p. 321) treat Robulus 

 Montfort as a subgenus of Lenticulina Lamarck. There is still confusion in the treatment of the group, however, and no attempt has been 

 made to clarify the question here, the generic names in nearly all cases being quoted unchanged. 



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