310 Transactions of the Society. 



Spiroloculina d'Orbigny. 



4. Spiroloculina limbata d'Orbigny. 



Spiroloculina limbata d'Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 299, No. 12. 

 Ditto. Bornemann, 1855, Zeitschr. deutsch. geol. Gesell., vol. vii. p. 348, 



pi. xix. fig. 1. 

 Spiroloculina depressa (d'Orbigny) Williamson, 1858, Kec. Forain. Gt. Britain, 



p. 82, pi. vii. fig. 177. 

 Spiroloculina limbata ("d'Orbigny) Brady, 1884, Forain. ' Challenger,' p. 150, 



pi. ix. figs. 15-17. 

 Ditto. (d'Orbigny) Brady, 1887, Synopsis British Becent Foraminifera. 



Fossil and recent. The fossil specimens are from at least two 

 different deposits — a clay with pyritic infiltrations, and probably a 

 clean shell sand. 



5. Spiroloculina excavata d'Orbigny. 



Spiroloculina excavata d'Orbigny, 1846, Forarn. Foss. Vienne.p. 271, pi. xvi. 



figs. 19-21. 

 Ditto. (d'Orbigny) Brady, 1884, Foram. « Challenger,' p. 151, pi. ix. figs. 5, 6. 

 Ditto. (d'Orbigny) Brady, 1887, Synopsis British Becent Foraminifera. 



Fossil only. The specimens are well developed and typical, 

 some of them showing signs of pyritic internal casts, which points 

 to a clay as their source of origin. 



6. Spiroloculina incerta Terquem. 



Spiroloculina incerta Terquem, 1882, Mem. Soc. Geol. France, ser. 3, vol. ii. 

 Mem. III. p. 161, pi. xvi. figs. 29 a, b. 



Fossil only. Terquem's description agrees very well with our 

 specimens. Only the last two chambers are visible, the earlier ones 

 being concealed by a deposit of shell-substance. The aperture, 

 which is upon a produced phialine neck, is very characteristic. 



7. Spiroloculina tenuis Czjzek sp. 



Quinqueloculina tenuis Czjzek, 1847, Haidinger's Naturw. Abhandl., vol. ii. 



p. 149, pi. xiii. figs. 31-34. 

 Spiroloculina tenuis (Czjzek) Brady, 1884, Foram. ' Challenger,' p. 152, pi. x. 



figs. 7-11. 

 Miliolina ten ids (Czjzek) Brady, 1887, Synopsis British Becent Foraminifera. 



Fossil only. This species has already been recorded from 

 Tertiary deposits by Czjzek, Eeuss, and Karrer. 

 Piecorded by Millett, " very rare." 



8. Spiroloculina tenuiseptatd Brady. 



Spiroloculina tenuiseptata Brady, 1884, Foram. 'Challenger,' p. 153, pi. x. 



figs. 5, 6. 

 Ditto. (Brady) Egger, 1893, Abhandl. d. k. bayer. Akad. d. Wiss., CI. II. 



vol. xviii. p. 223, pi. i. figs. 48, 49. 

 Ditto. (Brady) Millett, 1898, Malay Forams., Journ. B. Micr. Soc. p. 265. 



The specimens are undoubtedly fossils and apparently derived 



