490 
THE VOYAGE OF H.M.S. CHALLENGER. 
In the living condition the genus has been found at almost every latitude hitherto 
explored, and it has a bathymetrical range extending to depths of 2400 fathoms or more.. 
As a fossil it furnishes some of the oldest known Foraminifera, having been identified in 
beds of Lower Silurian age. There is some doubt as to its presence in the Carboniferous 
rocks, but in those of the Permian system and thenceforward it is one of the commonest 
generic types, and one of the most widely distributed. 
The literature of the genus is correspondingly extensive, and it affords an example of 
reckless species-making without a parallel even amongst the Foraminifera. One memoir, 
however, is worthy of mention as an exception to the mode of treatment generally pursued, 
namely, the admirable monograph of Prof. Silvestri, 1 in which a commendable and on the 
whole successful effort is made to reduce a varied series of forms into reasonable “ specific ” 
groups ; and it is a matter for regret that the scheme of this work was not extended, so 
as to furnish a complete synopsis of the genus. Considerable assistance in the identifi- 
cation of specimens may be derived from von Schlicht’s illustrations of Tertiary Fora- 
minifera 2 and Prof. Reuss’s notes thereupon ; 3 but notwithstanding the diminished 
number of species recognised by the last-named author in his maturer years, the nomen- 
clature would bear further reduction without loss to science. 
Nodosaria laevigata, d’Orbigny (PI. LXI. figs. 17-22, 32). 
A. Typical form, — tapering to a point, or apiculate, at the primordial end. 
Nodosaria ( Glandulina ) laevigata, d’Orbigny, PI. LXI. figs. 20-22. 
“Cornu Hammonis erectum globosius,” Plancus, 1739, Conch. Min., p. 16, pi. xiii. fig, 
Nodosaria ( Glandulina ) laevigata , d’Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 252, pi. x. figs. 1-3. 
Glandulina laevigata, Id. 1846, For. Foss. Vien., p. 29, pi. i. figs. 4, 5. 
„ ovula, Id. Ibid. p. 29, pi. i. figs. 6, 7. 
„ pygmcea, Reuss, 1850, Haidinger’s Naturw. Abbandl, vol. iv. p. 22, pi. ii fig. 3. 
,, inflata, Bornemann, 1855, Zeitscbr. d. deutscb. geol. Gesellscb. , vol. vii. p. 320, pi. xii. figs. 6, 7. 
„ laevigata, . Id. Ibid. p. 320, pi. xii. fig. 8. 
„ elongata, Id. Ibid. p. 321, pi. xii. fig. 9. 
„ acuminata, Costa, 1856, Atti dell’ Accad. Pontan., vol. vii. p. 125, pi. xi. fig. 19. 
inflata, 
Id. 
Ibid. 
p. 126, pi. xi. fig. 21. 
apiculata, 
Id. 
Ibid. 
p. 127, pi. xi. fig. 22. 
pyrula, 
Id. 
Ibid. 
p. 370, pi. xxvii. fig. 26. 
„ abbreviata, Neugeboren, 1856, Denkscbr. d. k. Akad. Wiss. Wien, vol. xii. p. 68, pi. i. fig. 1. 
„ laevigata, Id. Ibid. p. 67, pi. i. figs. 3,4. 
„ elliptica, Reuss, 1863, Sitzungsb. d. k. Ak. Wiss. Wien, voL xlviii. p. 47, pi. iii. 
figs. 29-31. 
„ globulus, Id. Ibid. p. 66, pi. viii. figs. 94, 95. 
1 Le Nodosarie fossili nel terreno subapennino Italiano e viventi nei mari d’ltalia. — Monografia del Prof. Orazio 
Silvestri, Catania, 1872. 
2 Die Foraminiferen des Septarientbones von Pietzpuhl, Berlin, 1870. 
Sitzungsb. d. 1c. Alt. Wiss. Wien., 1870, vol. lxii. p. 455. 
