Bed Chalk Foraminifera. By Burrows , Sherborn , and Bailey. 555 
geol. Ges., iii. 1851, p. 83, plate vi. fig. 51. — Fragments of Seguenza’s 
variety alata * are frequently met with in Mr. Bailey’s preparations. 
Bolivina sp. A third species of this genus is common in 
Mr. Bailey’s slides. Apparently near to B. punctata d’Orb., but the 
difficulty of determining balsam-mounted specimens prevents us from 
doing more than recording its presence. 
Pleurostomella Reuss, 1859. 
Fleur ostomella subnodosa Reuss, plate VIII. figs. 27, 28, 29 a , b. 
Dentalina subnodosa Reuss, Verst, bohrn. Kreide, part i. 1845, p. 28, 
plate xiii. fig. 22. P. subnodosa Reuss, SB. k. Ak. Wiss. Wien, xl. 
1860, p. 204, plate viii. figs. 2 a, b. — Nine examples, the characteristic 
variation of which is well shown in the specimens selected for illustra- 
tion. The rapidly increasing form (fig. 29) is the more common, that 
shown in fig. 27 approaches P. alternans. Burrows Coll. 
P. alternans Sch wager, plate VIII. fig. 30. Sch wager, Novara 
Reise, 1866, p. 238, plate vi. fig. 80. — A small specimen, the last 
chamber of which is possibly imperfect. Bailey Coll. 
Lagena Walker & Boys, 1784. 
Lagena globosa (Mont.), plate IX. figs. 1, 2, 4. Vermiculum 
globosum Montagu, Test. Brit., 1803, p. 523; L. globosa Brady, 
Rep. Challenger, ix. 1884, p. 452, plate lvi. figs. 1-3. — Rare in our 
washings. Some of the specimens show the entosolenian neck. Bailey 
preparations. 
L. Isevis (Mont.), plate IX. fig. 3. Vermiculum Iseve Montagu, 
Test. Brit., 1803, p. 524: L. Isevis Brady, Rep. Challenger, ix. 
1884, p. 455, plate lvi. figs. 7-14, 30. — One specimen ; the closing of 
the aperture is probably due to matrix. Burrows Coll. 
L. apiculata Reuss, plate IX. figs. 6, 7, 0, 10, 11. Oolina apicu- 
lata Reuss, Haidinger’s Nat. Abh., iv. (i.) 1851, p. 22, plate i. fig. 1 ; 
L. apiculata Reuss, SB. k. Ak. Wiss. Wien, xlvi. 1862, p. 319, plate i. 
figs. 4-8, 10, 11 ; Brady, Rep. Challenger, ix. 1884, p. 452, plate lvi. 
figs. 4, 15-18. — Most abundant and very variable in shape, a condition 
characteristic also of its living representatives. 
L. apiculata var. emaciata Reuss, plate IX. figs. 8, 12, 13. 
L. emaciata Reuss, SB. k. Ak. Wiss. Wien, xlvi. 1862, p. 319, 
plate i. fig. 9. — Numerous specimens occur in Mr. Burrows’ collection. 
It can scarcely be separated from the foregoing, and Reuss says of it, 
“ der wesentliche Unterschied liegt in dem volligen Mangel des Central- 
stachels an der Basis des Gehauses.” 
L. cincta Seguenza, plate IX. fig. 5. Fissurina cincta Seguenza, 
Foram. Monotal. Messina, 1862, p. 62, plate ii. fig. 31. — One specimen 
* Vulvulina alata Seg., Atti Acc. Gioenia, [2] xviii. 1862, p. 115, pi. ii. f. 5; 
B. Beyrichi v. alata Seg., Brady, Rep. Challenger, ix. 1884, p. 422, pi. liii. figs. 2-4. 
