EXPLANATION OF PLATE 17 (XVII) 



Figs. 1-6, X 12; Figs. 7-10, X 15; Figs. 11, 12, X 25; Figs. 13-15, X 50. 

 Figures 1-6. — Marginopora vertebralis Blainville. 

 Gulf of Suez. (15-20 fathoms) 

 Referred by Brady to Orbitolites complanaia Lamarck, "monstrous specimens, showing the results of redun- 

 dant and inequilateral growth." Douville has placed Orbitolites complanata of Carpenter and others, not of 

 Lamarck, in the synonymy of M. vertebralis Blainville (see note to preceding plate). Yabe and Hanzawa (Sci. 

 Rep. Tohoku Imp. Univ., Sendai, Japan, 2nd. ser. (Geol.), Vol. 11, No. 3, 1929, p. 182) refer these figures and 

 those of "0. complanata" on Plate XVI to Orbitolites {Marginopora) vertebralis Quoy and Gaimard. 

 Figures 7-12. — Alveolinella quoyi (d'Orbigny). 



Figs. 9, 10. Challenger Sta. 218A, Admiralty Islands, Pacific. (16-25 fathoms) 

 Figs. 11, 12. Admiralty Islands, Pacific. (16 fathoms) 

 Referred by Brady to the fossil species, Alveolina boscii (Defrance). Hofker (Siboga Exped., Foraminifera 

 Pt. II, 1930, p. 166) refers Recent forms of Alveolina to Alveolinella quoyi (d'Orbigny), with reference to 

 Carpenter, Moebius and Cushman. M. Reichel (Mem. Soc. Pal. Suisse, Vol. LIX, 1937, p. 116) refers the present 

 figures to A. quoyi (d'Orbigny). 

 Figures 13-15. — Neoalveolina melo (Fichtel and Moll). 



Fig. 14. Coral sand, Bermuda and Ascension, Atlantic. 

 Fig. 15. Off Ascension Island, Atlantic. 

 Referred by Brady to Alveolina and by Reichel (Mem. Soc. Pal. Suisse, Vol. LIX, 1937, p. 107) to Neoal- 

 veolina. Reichel notes that the name Neoalveolina bradyi (Silvestri), proposed by Silvestri (Ann. R. Lie. Sci. 

 "Vittorio Veneto," Milan, Anno 1926-27, fasc. 2, 1927, p. 227) for Recent forms attributed to Alveolina melo, 

 could be used but that he could distinguish no important differences between Recent specimens and the Mio- 

 cene A . melo. He also noted that further study is needed to determine whether the Recent Neoalveolina pulchra 

 (d'Orbigny) from Cuba is also a synonym of Neoalveolina melo. 



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