G4 FORAMINIFERA OF THE CRAG. 
OrrHocEera, Lamarck, Blainville, Fleming, Thorpe. 
Vacinutins, D’Orbigny, Roemer, Ehrenberg, Macgillivray, Bronn, Morris, Reuss, 
Parker and Jones, Terquem, Bornemann, Neuegeboren, Cornuel, Karrer, 
Brady, Seguenza, &e. 
DnnTALiINa (in part), Wacgillivray, Williamson. 
SPIRALINA, Brown. 
Characters.—Shell elongate, tapering, straight or arcuate, compressed ; composed of 
several oblique segments, arranged in a linear series ; slightly or not at all constricted at 
the septal lines. Aperture marginal. 
Vaginulina proper has a compressed shell, but some specimens have the earlier 
segments compressed and the later chambers vesicular, thus comprising Dentaline or 
Marginuline characters, as the case may be. In a Nodosarian shell with oblique chambers, 
if there be no compression, the shell is a Marginulina if stout, and a Dentalina if tapering. 
If commencing with an inclination to be spiral, the shell is a Marginulina if stout, but a 
Planularia if much compressed, in either case pomting towards Cristellaria. 
Vaginuline may have any of the ornaments found in other Wodosarine, but they 
usually take on, im various degrees, and either alone or combined, first, a limbation of 
the septal lines and of the margins, and secondly, riblets, continuous or interrupted, and 
usually oblique to the axis of the shell. 
Vaginulina legumen, Linné, is the type of these elongate, compressed, and oblique- 
chambered Vodosaring. ‘The form referred to by Linné is smooth and compact in 
growth, and has limbate or thickened septal lines; Vag. elegans, D’Orb., and V. ligata, 
Rss., are still more limbate ; Batsch figures a much less compact shell, without ornament, 
as Wautilus leguminiformis ; keeled individuals (limbate on the margins only) are 
D’Orbigny’s Vaginulina marginata and V. caudata ; ribbed, without limbation, V. dinearis, 
Montagu, sp., being either very sparingly ornamented or ribbed all over; partly ribbed 
and limbate, /. margaritifera, Batsch ; much compressed and ribbed, V. striata, D’Orb.— 
and so on. 
Genus—V AGINULINA LEGUMEN, Linné, sp. 
a. Chambers distinct, not compact, unornamented. 
- 
Navtitus (OrtHocERAS) LeGUMINIFoRMIS, Batsch, 1791. Conch. Seesand., pl. 3, 
fig. 3a. 
NoposaRIaA LEGUMEN, Reuss, 1845. Verst. Bohm. Kreid., part 1, p. 28, pl. 13, 
figs. 23, 24. 
DENTALINA COMMUNIS (parte), Parker and Jones, 1860. Quart. Journ. Geol. Soc., 
vol. xvi, p. 457, pl. 19, fig. 26. 
