54 FORAMINIFERA OF THE CRAG. 
of several chambers in a linear series ; the primordial segment often very small. Septal 
lines either straight or oblique; usually constricted, occasionally level with the surface. 
Aperture terminal, often pouting, and nearly always excentric. Dentalina is not separable 
from Nodosaria, Vaginulina, and Marginulina, except artificially ; for they all pass one 
into the other by numerous gradations. 
DENTALINA OBLIQUA, Linné. Plate I, fig. 9. 
Orthoceras minimum, &c., Gualtieri, 1742. Index Test., pl. 19, fig. NN. 
NAUTILUS OBLIQUUS, Linné, 1767. Syst. Nat., ed. 12, p. 1163, No. 281. 
— _suGosus, Montagu, 1803. Test. Brit., vol. i, p. 198, pl. 14, fig. 4. 
Noposaria suLcata, Nilsson, 1825. Trans. Acad. Stockholm, p. 341; 1827, Petref. 
Suecana, p. 8, pl. 9, fig. 19; Hisinger, Leth. Suec., 1837, p. 33, 
pl. 10, fig. 4 (few-ribbed). 
—_ ELEGANS, Miinster, 1838. Neues Jahrb., 1838, p. 382, pl. 3, fig. 1. 
— (DENnTALINA) sutcata, D’Orb., 1840. Mém. Soc. Géol. Fr., vol. iv, p. 15, 
pl. 1, figs. 10—13. 
— — muLticosTata, Jd. Ib., p. 15, pl. J, figs. 14, 15 (many- 
ribbed). 
Derntatina Jucosa, S. Wood, 1843. Morris’s Cat. Brit. Foss., p. 61. 
Noposarta Zippxt (parte), Reuss, 1845. Verst. Bohm. Kreid. I, p. 25, pl. 8, fig. 1. 
_ AFFINTS, Id. Ib., pl. 13, fig. 16. 
_ COSTELLATA, Id. Ib., fig. 18. 
DENTALINA URNULA, D’Orb., 1846. For. Foss. Vien., p. 54, pl. 2, figs. 31, 32 (Denta- 
line form of Nodosaria scalaris). 
— ELEGANTISSIMA, Id. Ib., p. 55, pl. 2, figs 33—35 (few-ribbed). 
_— BIFURCATA, Id. Ib., p. 56, pl. 2, fig. 38, 39. 
—_— ACUTA, Id. Ib., figs. 40—43. 
= PRIMMVA, D'Orb., 1850. Prod. Paléont., vol. i, p. 242, No. 260. 
a SEMINUDA, Reuss, 1850. Denks, Akad. Wien., vol. i, p. 368, pl. 46, 
fig. 9. 
_— BIFURCATA, Id. Ib., fig. 10. 
— ACUTICOSTA, Id. Ib., p. 369, pl. 16, fig. 11. 
= Krnert, Jones, 1850. King’s Monogr. Permian Foss., p. 17, pl. 6, figs. 2, 3. 
— PUNGENS, Reuss, 1851. Zeitsch. Deutsch. Geol. Ges., vol. iii, p. 63, pl. 3, 
fig. 13. 
— Muensteri, Reuss, 1855. Sitz. Akad. Wien., vol. xviii, p. 31, pl. 1, fig. 8. 
— LONGICAUDA, Id. Zeitsch. Deutsch. Geol. Gesell., vol. vii, p. 267, 
pl. 8, fig. 12. 
— ACUTISSIMA, Id. Ib., pl. 8, fig. 13. 
_ STEENSTRUPI, Id. Ib., p. 268, pl. 8, fig. 14 a. 
— SULCATA, Id. Ib., fig. 14 3. 
— Bau rica, Id. Ib., p. 269, pl. 8, fig. 15. 
