. Bulletin of the British Museum (Natural History), Geology. 40 J. E. WHITTAKER & R. L. HODGKINSON 1959 Hauerina fragilissima (Brady); Graham & Militante : 35; pi. 3, fig. 9. 1960 Hauerina fragilissima (Brady); Barker : 18; pi. 9, figs 12-14 (after Brady). 1963 Hauerina fragilissima (Brady); Matsunaga : pi. 27, figs 2a, b. 1964 Massilina fragilissima (Brady) Le Roy : F20; pi. 12, fig. 31. 1968 Hauerina fragilissima (Brady); Chiji & Lopez : 107; pi. 10, fig. 9. 1969 Hauerina fragilissima (Brady); Konda : 88 (table); pi. 5, fig. 6. 1969 Heterillina fragilissima (Brady) Resig : 67; pi
. Bulletin of the British Museum (Natural History), Geology. 40 J. E. WHITTAKER & R. L. HODGKINSON 1959 Hauerina fragilissima (Brady); Graham & Militante : 35; pi. 3, fig. 9. 1960 Hauerina fragilissima (Brady); Barker : 18; pi. 9, figs 12-14 (after Brady). 1963 Hauerina fragilissima (Brady); Matsunaga : pi. 27, figs 2a, b. 1964 Massilina fragilissima (Brady) Le Roy : F20; pi. 12, fig. 31. 1968 Hauerina fragilissima (Brady); Chiji & Lopez : 107; pi. 10, fig. 9. 1969 Hauerina fragilissima (Brady); Konda : 88 (table); pi. 5, fig. 6. 1969 Heterillina fragilissima (Brady) Resig : 67; pi. 1, fig. 9. 1975 Hauerina fragilissima (Brady); Ponder : 14, text-figs 28-47. Material. 8 specimens. NB 9449, 9450. Variation. Length 0-30-0-60 mm, width 0-28-0-55 mm, thickness 0-16-0-18 mm. Remarks. The genus Hauerina has been reviewed recently by Ponder (1975), based on his study of three Recent species from north Queensland, Australia. He shows that contrary to the definition of Loeblich & Tappan (1964: C470) the genus shows great variation in the apertural apparatus, chamber arrangement, number of chambers per whorl, involution of the test, inflation of the test and the development of the internal posterior longitudinal ridges. Our specimens are for the most part similar to Brady's (1884) fig. 14. They have a prominent quinqueloculine early stage with later chambers half a whorl in length. We thus agree with Ponder, who, after studying large numbers of specimens, concluded that only in the later stages of larger individuals are there more than two chambers per whorl. Because of the lack of variation in our material we are not able to comment on Ponder's conclusion that Hauerina bradyi Cushman (= H. compressa, sensu Brady and Millett) is conspecific with H. fragilissima (Ponder 1975: 18). Our synonymy is therefore confined to records of the latter species only. Distribution. Fossil: Pliocene (Asano 1951, Matsunaga 1963) and Pleistocene (Konda 1969) of Japan; Pliocene o
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