10 Transactions of the Society. 



xxxiv. fig. 3. L. vulgaris Giimbel, 1 885, Geol. Bayern, Th. 1 , 

 Lief. 2, p. 422, fig. 266°. L. Isevis (Montagu) Haeusler, 1887, Neues 

 Jahrb. far Min., p. 181, pi. iv. figs. 31-38. L. Isevis (Montagu) 

 Malagoli, 1887, Atti Soc. Nat, Modena (Rend.), ser. 3, vol.iii. p. 109, 

 pi. i. fig. 7. L. Isevis (Montagu) Brady, 1888, Geol. Mag., dec. 3, 

 vol. v. p. 482, pi. xiii. figs. 6-10. L. Isevis (Montagu) Fornasini, 

 1889, Minute forme Rizopod. Retio, pi. fig. 8. L. Isevis (Montagu) 

 Haeusler, 1890, Mem. Soc. Pal. Suisse, vol. xvii. p. 86, pi. xiii. fig. 20. 

 L. Isevis (Montagu) Fornasini, 1890, Mem. R. Accad. Sci. 1st. Bologna, 

 ser. 4, vol. x. p. 466, pi. fig. 1. L. Isevis (Montagu) Mariani, 1891, 

 Boll. Soc. Geol. Italia, vol. x. p. 725, pi. xxi. fig. 9. L. Isevis 

 (Montagu) Fornasini, 1893, Mem. E. Accad. Sci. 1st. Bologna, ser. 5, 

 vol. iii. p. 431, pi. ii. fig. 1. L. tubulifera Egger, 1893, Abhandl. k. 

 bayer. Akad. Wiss., CI. II., vol. xviii. p. 324, pi. x. figs. 6, 7. L. 

 Isevis (Montagu) Mariani, 1893, Ann. E. 1st. Udine, ser. 2, vol. >:i. 

 p. 22, pi. i. fig. 8. L. Isevis (Montagu) Chapman, 1893, Journ. R. 

 Micr. Soc, p. 581, pi. viii. fig. 5. L. Isevis (Montagu) Haeusler, 1893, 

 Mem. Soc. Pal. Suisse, vol. xx. p. 13, pi. i. figs. 14-16. L. Isevis 

 (Montagu) Goes, 1894, K. Svenska Vet.-Akad. Handl., vol. xxv. p. 74, 

 pi. xiii. figs. 719-722. L. Isevis (Montagu) Egger, 1895, Jahres- 

 bericht xvi. Naturhist. Ver. Passau, p. 24, pi. ii. fig. 11. L. Isevis 

 (Montagu) Jones, 1895, Paleont. Soc, p. 181, pi. i. fig. 28 (1866). 

 L. Isevis (Montagu) Fornasini, 1898, Mem. R. Accad. Sci. 1st. Bologna, 

 ser. 5, vol. vii. p. 210. pi. fig. 19. L. Isevis (Montagu) Egger, 1899, 

 Abhandl. k. bayer. Akad. Wiss., CI. II. vol. xxi. p. 102, pi. v. fig. 2 ; 

 and L. clavata (d'Orb.) p. 103, pi. v. fig. 16. L. Isevis (Montagu) 

 Flint, 1899, Rep. U.S. Nat. Mus. for 1897 (1899) p. 306, pi. liii. 

 fig. 6. L. Isevis (Montagu) Chapman, 190C Quart. Journ. Geol. 

 Soc, vol. lvi. p. 258, pi. xv. fig. 2. L. Isevis (Montagu) Wright, 1900, 

 Geol. Mag., dec. 4, vol. vii. p. 100, pi. v. fig. 12. L. Isevis (Montagu) 

 Silvestri, 1900, Mem. Pontif. Accad. Nuovi Lincei, vol. xvii. p. 244, 

 pi. vi. fig. 56. 



This ubiquitous form occurs in great profusion at nearly all the 

 Stations, and exhibits the usual variations of form between L. glcbosa 

 and L. apiculata. 



Lagena Isevis var. distoma Silvestri, plate I. fig. 10. 



Lagena Isevis (Montagu) Silvestri, 1900, Mem. Pontif. Accad. 

 Nuovi Lincei, vol. xvii. p. 244, pi. vi. figs. 74, 75. 



This apiculate variety is by no means uncommon at Station 25, 

 and has been observed at other Stations. Some of the examples are 

 very finely striated, indicating an affinity with L. (Amphorina) Lyellii 

 Seguenza.* 



Prof. Silvestri's examples are from a neogene deposit, supposed to 

 be miocene, in the Alta Valle Tiberina. 



* Foram. Monotal Mioe. Messina, 1862, p. 52, pi. i. fig. 40. 



