EXPLANATION OF PLATE 111 (XCI), CONTINUED 



Referred by Bradj^ to A. lessonii, and followed b}^ Cushman and others. D'Orbigny proposed A. gibba for 

 an Antillean species in 1826 (Ann. Sci. Nat., Vol. 7, p. 305) but this is a nomen nudum, not validated till 1903 

 by Fornasini (Rend. Sess. R. Ace. Sci. 1st. Bologna, N.S., Vol. 7, p. 144, pi. ii, fig. 4), who regards it as indis- 

 tinguishable from A. lessonii e.xcept as a variant, and compares it with Brady's fig. 7. However in 1839 (Fora- 

 miniferes de I'lle de Cuba, p. 120, pi. 8, figs. 1-3) d'Orbigny described and figured A. gibbosa from Cuba which 

 is regarded as the same species and which agrees well with the present figures of Brady and with Recent ma- 

 terial from the eastern Gulf of Mexico and Caribbean region generally. It has rather fewer chambers than A. 

 quoyii, is much more irregular, varying from depressed lenticular to asymmetrically inflated, is sharply carinate 

 as a rule, and is less globose, with more chambers, than typical A. lessonii. 



Figures 5, 6. — Amphistegina lessonii d'Orbigny. 



Fig. 5. Challenger Sta. 218A, Admiralty Islands, Pacific. (16-25 fathoms) 

 Fig. 6. Challenger Sta. 172, Friendly Islands, Pacific. (18 fathoms) 

 D'Orbigny described A. lessonii from He de France (Mauritius) and the model and later figures (Guerin-Mene- 

 ville, Iconog. du Regne Animal, Vol. 2, 1843, pi. 3, fig. 11, 11a, lib; Fornasini, Rend. R. Ace. Sci. 1st. Bologna, 

 N.S., Vol. 7, 1903, pi. ii, figs. 1, la, lb.) show a carinate, somewhat irregular, globose form, with comparatively 

 few (7-8) chambers. This is very close indeed to the above figures of Brady and to material examined from the 

 Indo-Pacific. It appears to be quite distinct from any West Indian material. Said (1949, loc. cit. supra) refers 

 Brady's fig. S to A. radiata var. venosa (Fichtel and Moll), which could prove correct, but actual specimens 

 should be examined, sectioned and thoroughly checked. Cushman, Chapman and Parr, and Yabe and Han- 

 zawa have referred venosa (Fichtel and Moll) to Camerina (Nummulites) but the original figures appear to 

 represent an Amphistegina. 



Figure 8. — Cycloclypeus carpenteri Brady. 



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

 Referred by Brady to C. guembelianus Brady but regarded by Chapman (Jour. Linn. Soc. Zool., Vol. 28, 

 1900, p. 22) and others as the megalospheric form of C. carpenteri. 



EXPLANATION OF PLATE 112 (CXII) 



Figs. 1, 2, X 50; Figs. 3-10, 14, 15, X 12; Figs. 11-13, X 18; Fig. 16, X 15; Figs. 17-20, X 25. 

 Figures 1, 2. — Hyalinea balthica (Schroeter). 



Porcupine Sta. 11, W. of Ireland, E. Atlantic. (1630 fathoms) 

 Referred by Brady to Operculina ammonoides (Gronovius), and by Cushman (U.S.N.M. Bull. 104, Pt. 8, 

 1931, p. 108) to Anomalina balthica (Schroeter). Earland and Parr have both placed the species in Operculina 

 since Hofker demonstrated it to possess a canal system. Later, Hofker (Siboga Exped., Foraminifera Pt. Ill, 

 1951, p. 508) made it the genotype of Hyalinea. Bermudez (Bol. de Geol., Caracas, Vol. 2, No. 4, 1952, p. 74) 

 regarded this as too close to Hyalinia Agassiz and proposed the new name Hofkerinella. Loeblich and Tappan 

 (personal communication) have pointed out that such similarity of spelling does not constitute homonymy 

 according to the rules of nomenclature, and the name Hyalinea is therefore retained here. 

 Figures 3-9, 11-13. — Operculina ammonoides (Gronovius)? 



Figs. 3, 6-8. Challenger Sta. 195A, ofif Amboyna, Pacific. (15-20 fathoms) 



Figs. 4, 12, 13. Challenger Sta. 218A, Admiralty Islands, Pacific. (16-25 fathoms) 



Fig. 5. Challenger Sta. 172, Friendly Islands, Pacific. (18 fathoms) 



Fig. 9. Challenger Sta. 186, Flinder's Passage, Pacific. (7-8 fathoms) 



Fig. 11. China Sea, dredged. 

 Figs. 3, 4, 5, and 8 referred by Brady to 0. complanata (Defrance), figs. 6, 7, 9, and 10 to 0. complanata 

 va.v. granulosa Leymerie, and figs. 11-13 to Nummulites cumingii (Carpenter). For forms similar to those in 

 figures 3-9 Chapman and Parr (Proc. R. Soc. Victoria, N.S., Vol. 50, No. 1, 1938, p. 290, pi. 17) have used the 

 name 0. ammonoides (Gronovius), with 0. gaimardi d'Orbigny and Assilina discoidalis d'Orbigny in synonymy; 

 for forms similar to figs. 11-13 they use Operculinella venosa (Fichtel and Moll), with cumingii (Carpenter) 

 in synonymy. Hanzawa, in his revision of "Nummulites" cumingii (Jap. Jour. Geol. Geogr. Vol. 16, Nos. 3-4, 

 1939, pp. 225-232, pis. 15, 16) gives a similar synonymy to that of Chapman and Parr, but includes their 

 Operculinella venosa with Operculina ammonoides (Gronovius), and separates cumingii as a true Operculinella. 

 Although neither Chapman and Parr nor Hanzawa refer to Brady's figures it seems clear that figs. 11-13 are 

 0. ammonoides (Gronovius). The writer believes that 0. gaimardi d'Orbigny should be regarded as distinct (see 

 below) but that 0. discoidalis (d'Orbigny) is correctly placed under ammonoides. Brady's figures 3-9 may per- 

 haps represent forms of 0. ammonoides but these should be examined, since they appear to be rather more com- 

 pressed and thinner than any forms of ammonoides figured, and also the spiral coiling tends to be more open. 

 They could be variants of the species following. 

 Figure 10. — Operculina gaimardi d'Orbigny? 



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

 Referred by Brady to 0. complanata var. granulosa Leymerie. Chapman and Parr (1. c. supra) figure a similar 

 form as 0. bartschi Cushman but a comparison with Fornasini's reproduction of d'Orbigny's drawing of gai- 

 mardi shows the two forms to be extremely similar, though d'Orbigny's drawing shows granules on the sutures 



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