Report on Foraminifera. By F. W. Millett. 497' 



Chapman, 1893, Journ. E. Micr. Soc, p. 584, pi. viii. fig. 1G. 

 L. marginata (W. and B.) Egger, 1893, Abhandl. k. bayer. Akad. 

 Wiss., CI. II. vol. xviii. p. 332, pi. x. figs. 20, GG. 67, 96, 97. 

 L. marginata (W. and B.) Goes, 1894, K. Svenska Vet. Akad. 

 Handl., vol. xxv. p. 81, pi. xiii. fig. 748. L. marginata (W. and J.) 

 Jones, 1895, PalaBont. Soc, p. 199, fig. 22. L. marginata (W. and 

 B.) Silvestri, 1896, Mem.Tontif. Accad. Nuovi Lincei, vol. xii. p. v 119, 

 pi. iii. figs. 7-9. L. marginata (W. and B.) Perner, 1897, Ceska 

 Akad. Cisare Frantiska Josefa (Palreont. Bohemica) No. 4, p. 18, 

 pi. vii. figs. 3, 5, 7. L. marginata (Walker) Egger, 1899, Abhandl. 

 k. bayer. Akad. Wiss., CI. II. vol. xxi. p. 104, pi. v. fig. 5. L. 

 marginata (W. and B.) Flint, 1899, Eep. U.S. Nat. Mus. for 1897, 

 (1899) p. 307, pi. liv. fig. 2. L. marginata (W. and B.) Silvestri, 

 1900, Mem. Pontif. Accad. Nuovi Lincei, vol. xvii. p. 243, pi. vi. 

 figs. 51, 52. L. marginata (W. and B.) Fornasini, 1900, Mem. 

 R. Accad. Sci. 1st. Bologna, ser. 5, vol. viii. p. 376, fig. 25. L. 

 marginata (W. and B.) Wright, 1900, Geol. Mag., dec. 4, vol. vii. 

 p. 100, pi. v. fig. 17. 



This usually common form is not very abundant in the Malay 

 Archipelago, and although it is plentiful at a few Stations, at the 

 others it occurs but sparingly. 



It is best represented by its varieties, which are numerous and 

 diversified. 



Lagena marginata Walker and Boys var. plate VIII. fig. 20. 



This variety is distinguished by its truncated contour, the test 

 being almost semicircular, with the aperture situated in a depres- 

 sion at the apex of the shell. In form it closely resembles the 

 Fissurina aperta of Seguenza * and the Lagena jfaba of Balkwill 

 and Millett. f 



It is very rare, and occurs only at a few Stations. 



Lagena marginata Walker and Boys var. plate VIII. fig. 21. 



This variety is also very rare. The recurved spines at the oral 

 extremity of the elongated neck appear to have but little value 

 as a criterion of species, as they have been found by F. W. O. 

 Bymer Jones in L. lasvis,t and by Dr. Chaster in a compressed form 

 resembling L. laevigata.^ 



* Foram. monotal. Mioc. Messina, 1862, p. GO, pi. i. fig. 60. 



f Journ. Micr., vol. iii. 1884, p. 81, pi. ii. fig. 10. 



t Lagena vulgaris typica, Trans. Linn. Soc , vol. xxx. 1S72, p. 51, pi. xix. 

 fig. 13. 



§ Lagena falcata, First Eept. of the Southport Soc. of Nat. Sci., 1892, p. 6, pi. i. 

 flff.7. 



