106 FORAMINIFERA OF THE CRAG. 



2. Spiroloculina excavata, d'Orbigny, 1846. Plate V, fig. 2 ; Woodcuts, 



figs. 2 a, 2 b. 



Spiholoctjlina excavata, d'Orbigny, 1846. Foram. Foss. Vienne, p. 271, pi. xvi, 



figs. 19, 20. 



— (not named), Costa, 1838. Fauna Regno Napoli, pi. ii, fig. 2. 



— excavata, Costa, 1856. Atti Accad. Pontan., vol. vii, fasc. 2, 



p. 311, pi. xxiv, fig. 11. 



— debeessa, var. eotundata, Williamson, 1857. Rec. Brit. Fos., 



p. 82, pi. vii, fig. 178. 



— Feeteei, Reuss, 1864 Denks. k. Akad. Wiss. Wien, vol. xxiii, p. 6, 



pi. i, fig. 9. 



— excavata, Brady, 1865. Nat. Hist. Trans. Northumb. and Durham, 



vol. ii, part 1, p. 93, pi. xii, fig. 1. 



— cavernosa, Karrer, 1867. Sitz. k. Ak. Wiss. Wien, vol. lv, Abth. 1, 



p. 358, pi. ii, fig. 3. 



— excavata, Terquem, 1875. Plage Dunkerque, fasc. 1, p. 38, pi. v, 



fig. 17. 

 angulosa, Terquem (after d'Orbigny), 1878. Mem. Soc. Geol. Fr , 



ser. 3, vol. i, p. 53, pi. x, fig. 7. 



— ceassa, Seguenza, 1880. Mem. R. Accad. Lincei, ser. 3, vol. vi, 



p. 152, pi. xiv, fig. 10. 



— (indet.), Carpenter. Introd. Foram., 1862, pi. vi, fig. 1 ; re-figured 



in Schlumberger's Feuill. Jeuu. Nat. Annee 

 xii, 1882, p. 29, pi. ii, fig. 4. Apparently 

 excavate, with slightly concave chambers, 

 cf. bicaeinata, Schwager, 1883. Palaeontographica, vol. xxx, 



p. 85, pi. i, fig. 4. 

 excavata, Brady, 1884. ' Challenger ' Rept., p. 151, pi. ix, figs. 5, 6. 

 Fomasini, 1886. Boll. Soc. Geol. Ital., vol. v, p. 238, 

 No. 368. 

 limbata, Chapman, 1892. Quart. Journ. Geol. Soc, vol. xlviii, 



p. 516, pi. xv, fig. 4. 

 excavata, Fgger, 1893. Abhandl. k. Bayer. Akad., cl. ii, vol. xviii 



pp. 219, 223, pi. i, figs. 44, 45. 



— — Schlumberger, 1893. Mem. Soc. Zool. Fr., vol. vi, 



p. 201, fig. 1 ; and pi. iii, fig. 68. 



— de Amicis, 1893. Boll. Soc. Geol. Ital., vol. xii, fasc. 3, 



pp. 20, 178, 179, 310. 



— Soldanii, Fomasini, 1894. Foram. Coll. Soldaui (Sagg. Oritt.), 



p. 20, pi. o, fig. 1. 



Characters. — Lateral surfaces of the chambers plane or hollowed, and inclined 

 to the axis of the shell, either by a uniform slope or by steps, so that it 



