SIGMOiLINA TENUIS. 125 



the occurrence already recorded at Sutton, we find it at Sudbourne Hall, Broom 

 Hill, and Gedgrave. 



Sub-family 2. — Hauerinin^. 

 Brady's Report ' Challenger,' 1884, i)p. 62 and 182. 

 Characters. — Chambers partly milioline, partly planospiral or linear. 



Genus 1. — Sigmoilina, Schlumberger, 1887. 



General Characters. — Shell spiroloculine or quinqueloculine ; chambers at first 

 milioline, afterwards planospiral, with the outer margins of the chambers over- 

 lapping on the alternate sides. Transverse section shows two curved sets of 

 chambers making a more or less sigmoidal pattern. 



1. Sigmoilina tenuis (Czjzeh), 1847. Plate VII, fig. 2. 



QuiNQTJELOCTJLiNA TENUIS, Czjzek, 1847. Haidingers Naturw. Abhandl., vol. ii, 



p. 149, pi. xiii, figs. 31—34. 



— — Reuss, 1849. Denksch. k. Akad. "Wien, vol. i, p. 385, 



pi. 1, figs. 8 a — c. 

 Spieolocultna H08TEATA (?), Reuss, 1849. Ibid., p. 382, pi. xlix, fig. 7. 

 QuiNQTJELOcuLiNA TENUIS, Reuss, 1851. Zeitsch. Deutsch. geol. Gesell, vol. iii, 



p. 87, pi. vii, fig. 87. 



— — P. and J., 1865. Phil. Trans., vol. civ, p. 411, pi. xvii, 



fig. 84. 

 SpiEOLOcrLiNA TENUI8SIMA, Reuss, 1867. Sitzungsb. k. Akad. Wiss. Wien, vol. Iv, 



p. 71, pi.. i, fig. 11. 

 QuiNQUELOCULiNA, No. 551, SchUckt, 1870. roram. Pietzpuhl, p. 97, pi. xxxvii, 



figs. 11 — 13 (=: Spiroloculinatenuis, 

 Eeuss, Sitz. Akad. Wiss., vol. Isii, 

 1870, p. 456, No. 2). 

 Spieoloculina (undetermined), HantTcen (1875), 1881. Mitth. a. d. Jahrb. k. 



Ungar. geol. Anstalt, vol. iv, p. 20, pi. xiii, 

 fig.l. 



— Beechtoldsdoefensis, Karrer, 1S77. Geol. K. F.-J. Wasser- 



leitung, p. 375, pi. 16 a, fig. 10. 



— EOIIACEA, Schwager, 1878. Boll. E. Com. Geol. Ital., vol. ix, 



p. 529, fig. 20. 

 QuiNQTJELOCULiNA TENUIS, Siddall, 1878. Proc. Chester Soc. N. Sci., pt. ii, p. 46. 

 Spieoloculina tenuis, Brady, 1884. Eep. ' Challenger,' p. 152, pi. x, figs. 7 — 11. 

 MiLiOLiNA TENUIS, BalkwUl and Wright, 18S5. Tr. E. I. Acad., vol. xxviii (Sci.), 



p. 324, pi. xii, figs. 3—5. 



