Recent and Fossil Foraminifera. 425 



102. Lagena hexagona Williamson sp. 



Entosolenia squamosa var. hexagona Williamson, 1818, Ann. and Mag. Nat. 



Hist., ser. 2, vol. i. p. 20, pi. ii. fig. 23. 

 Ditto. Williamson, 1858, Recent Foraru. Gt. Britain, p. 13, pi. i. fig. 31. 

 Entosolenia squamosa var. scalariformis Williamson, 1858, Recent Foram. Gt. 



Britain, p. 13, pi. i. fig. 30. 

 Lagena hexagona (Williamson) Brady, 1881, Foram. ' Challenger,' p. 472, pi. 



lviii. figs. 32, 33. 

 Ditto. (Williamson) Brady, 1887, Synopsis British Recent Foraminifera. 



Fossil. Eare. 



103. Lagena Isevigata Reuss sp. 



Fissurina laevigata Reuss, 1849, Denkschr. d. k. Akad. Wiss. Wien, vol. i. 



p. 366, pi. xlvi. fig. 1. 

 Lagena Isevigata (Reuss) Balkwill and Millett, 1884, Journ. Micr., vol. iii. 



p. 80, pi. ii. fig. 6; trigonal form, p. 81, pi. iii. fig. 6. 

 Ditto. (Reuss) Brady, 1884, Foram. ' Challenger,' p. 473, pi. cxiv. fig. 8 a, b. 

 Ditto. (Reuss) Brady, 1887, Synopsis British Recent Foraminifera. 



Fossil and recent. 



104. Lagena lucida Williamson sp. 



Entosolenia marginata var. lucida Williamson, 1858, Recent Foram. Gt. 



Britain, p. 10, pi. i. figs. 22, 23. 

 Lagena oblonga (Seguenza) J. Wright, 1876-7, Proc, Belfast Field Club 



(Appendix), p 104, pi. iv. fig. 9 a, b. 

 Lagena lucida (Williamson) Balkwill and Millett, 1884, Journ. Micr., vol. iii. 



p. 80, pi. ii. fig. 7, and pi. iii. figs. 4, 5. 

 Ditto. (Williamson) Brady, 1887, Synopsis British Recent Foraminifera. 



Eecent only. 



105. Lagena marginata Walker and Boys. 



Serpula (Lag>ua) marginata Walker and Boys, 1784, Test. Min., p. 2, pi. i. 

 fig. 7. 



Entosoleni" marginata (pars) Williamson, 1858, Recent Foram. Gt. Britain, 

 p. 10, pi. i. fig. 21. 



Lagena marginata (Walker and Boys) Brady, 1884, Foram. ' Challenger,' p. 

 476, pi. lix. figs. 21-3. 



Ditto. (Walker and Boys) Brady, 1887, Synopsis British Recent Forami- 

 nifera. 



Fossil and recent, the former predominating in numbers. The 

 marginal keel is only slightly developed in the Selsey specimens, 

 and the fossils come from two or three different sources. 



