322 FORAMINIFERA OF THE CRAG. 



Pulvinulina auricula, Fornasini, 1894. Mem. E. Accad. Sci. Istit. Bologna, 



ser. 5, vol. iv, p. 224, pi. iii, figs. 43, 

 43 a, 43 b. 



— — De Amicis, 1895. Nat. Sicil., vol. xiv, pp. 55 and 63. 

 — Chapman, 1895, Proceed. Zool. Soc, 1895, p. 43. 



— — Goes, 1896. Bull. Mus. Comp. Zool. Harvard Coll., 



vol. xxix, p. 77. 



Characters. — Shell oblong, depressed, inequilateral, consisting of rather less 

 than two convolutions, both of which are visible superiorly ; the outermost 

 consists of about eight or nine arcuate segments, which increase rapidly in 

 length as they approach the end. Superior (spiral) surface smooth, almost 

 flat ; the segments scarcely ventricose. Inferior surface convex ; segments more 

 ventricose, especially the last, from the narrow end of which a small lamina 

 projects covering the inferior umbilicus. Septal lines on the lower surface some- 

 what excavated, especially near the umbilicus. Periphery slightly lobulate, 

 angular or carinate. Orifice narrow, crescentic, on the inner border of the 

 ultimate segment, close to the preceding convolution. 



Occurrence. — Pulvinulina auricula is found in tropical and temperate seas at 

 depths ranging from 17 to over 500 fathoms. 



Fossil specimens have been obtained from the Eocene (Calcaire Grossier) .; the 

 Oligocene of Pietzpuhl; the Miocene of Muddy Creek, Victoria; the Pliocene of 

 Garrucha and St. Erth ; and the Pleistocene of Italy and elsewhere. In the 

 Coralline Crag we have met with it at Tattingstone, zone d. Mr. Searles Wood 

 found some medium-sized specimens in his Sutton gatherings, and one or two 

 examples, of really large dimensions, were subsequently met with in material from 

 the same locality. The figured specimens (figs. 33 — 35) are about equal to such 

 as have been found off the Scilly Isles and Ushant, at 50 — 70 fathoms. 



4. Pulvinulina Karsteni (Reuss), 1855. Plate II, figs. 28 — 30. 

 Part I, 1866, Appendices I and II, Tables, No. 86. 



Rotalia Kaesteni, Reuss, 1855. Zeitschr. Deutsch. Geol. Gesel., vol. vii, p. 273, 



pi. ix, fig. 6. 

 Pulvinulina Karsteni, Brady, 1864. Trans. Linn. Soc, vol. xxiv, p. 470, 



pi. xlviii, fig. 15. 



— bepanda, var. Karsteni, Parker and Jones, 1865. Phil. Trans , 



vol. civ, p. 396, pi. xiv, figs. 14, 15, 

 17; pi. xvi, figs. 38—40. 



— Karsteni, J., P., and B., 1866. Monogr. Forain. Crag, Append, 



No. 86, pi. ii, figs. 28—30, 



