38 FORAMINIFERA OF THE CRAG. 
their mucronate or caudate representatives, so many of them are produced still further, 
and have shells of fusiform contour, with both ends open for the passage of the larger pseudo- 
podia. Specimens of this sort have been repeatedly figured, but their structural peculiarity 
appears entirely to have escaped the notice of Continental rhizopodists. Seguenza’s 
genus Amphorina seems, judging by his figures, to consist of subvarieties of Lagena 
sulcata caudata and L. sulcata distoma ; and an analysis of them will be found at p. 45, 
with the remarks on a distomatous form we have from the Sutton Crag. 
The typical Zagena sulcata has a world-wide distribution, accommodating itself to 
almost all climates and depths. The finest specimens are found at a depth of from 50 to 
100 fathoms, but it is plentiful in the shallowest water, and has been found in soundings 
as deep as 2350 fathoms in the Atlantic. 
Its distribution in time appears to have commenced with the Upper Chalk of Maes- 
tricht. It is found in many of the European Tertiaries. 
In the Crag, Z. sulcata is a common fossil. The specimens from Sutton are fine and 
well marked; those from the Cyprina-bed are large, but in the bed with Cardita and in 
the Upper Crag at Thorpe the examples are smaller. 
6. Lacena Muto, D’Orbigny. Plate I, fig. 35. 
Oona Meto, D’Orb., 1847. Foram. Amér. Mérid., p. 20, pl. 5, fig. 9. 
ENTOSOLENIA SQUAMOSA, var. a, CATENULATA, Williamson, 1848, Ann. Nat. Hist., 2nd 
ser., vol. i, p. 19. pl. 2, fig. 20; 1858, 
Ree. For. Br., p. 13, pl. 1, fig. 31. 
—_ — var. 3, SCALARIFORMIS, Id. A. N. H., 2nd ser., 
vol. i, p. 19, pl. 2, figs. 21, 22. 
— GLOBOSA, var. CATENULATA, Parker and Jones, 1857. Ib., 2nd ser., 
vol. xix, p. 278, pl. 11, fig. 26. 
OVULINA RETICULATA, Seguenza, 1862. Foram. Monotal. Miocen. Messin., p. 42, 
jalnalesaea Oh 
Lacena Mento, P. and J., 1862. Append. Carpenter’s Introd., p. 309. 
—  FOVEOLATA, Reuss, 1862. Sitz. Akad. Wien., vol. xlvi, p. 332, pl. 5, fig. 65. 
—  SCALARIFORMIs (parte), Id. Ib., pl. 5, fig. 71. 
— cCATENULATA, Id. Ib., pl. 6, figs. 75, 76. 
— Maeto, Brady, 1864. Trans. Linn. Soc., vol. xxiv, p. 472; 1865, Nat. Hist. 
Trans., North. and Durham, vol.i, p. 97. 
—  svuLcaTa, var. (ENTosoLeNnrA) Mexo, P. and J., 1865. Phil. Trans., vol. clv, 
p. 354, pl. 13, figs, 33—36. 
Characters.—Shell ovato-globose or pear-shaped, usually Entosolenian. Surface 
covered by reticulated ornament of longitudinal and transverse ridges, the transverse 
being frequently less freely developed than the longitudinal bars. Colour white or dirty 
white. Length ,4,th or less to 3th inch. 
Lagena Melo may be looked upon as intermediate between L. su/cata and L. squa- = 
