310 FORAMINIFERA OF THE CRAG. 



Thuncatulina taeiabilis, Woodward, 1885. Jouru. N. Tork Micr. Soc, vol. i, 



p. 151. 



— — Millett, 1886. Trans. Geol. Soc. Cornwall, vol. x, 



p. 226. 



— — B., P., and J., 1888. Tr. Zool. Soc, vol. xii, pt. 7, 



p. 227, pi. xlv, fig. 17. 



— — Terrigi, 1889. Mem. Ace. Lincei, ser. 4, vol. vi, 



p. IIG, pi. vii, figs. 8, 9. 



— — li., 8., and £., 1890. Journ. R. Micr. Soc, p. 562, 



pi. xi, fig. 22. 



— — Chapvian, 1892. Quart. Journ. Geol. Soc, vol. xlviii, 



p. 517 ; and vol. 1, 1894, p. 721. 



— — Egger, 1893. Abhandl. k. Bayer. Ak. Wiss., vol. 



xviii, pt. 2, p. 404, pi. xvi, figs. 57 

 —59, 63, 64. 

 Planoebulina vaeiabilis. Goes, 1894. K. Svensk. Vet.-Akad. Handl., vol. xxv, 



No. 9, p. 88. 

 Teuncatulina lobattjla, var. taeiabilis, Be Amicis, 1895. Nat. Sicil., Ann. 



xiv, p. 52. 



— VAEIABILIS, Fornasini, 1896. Eivista Italiana di Paleontologia, 



fasc. di Aprile, 1896, pp. 1 — 5, and fig. 

 (= Costa's Trunc. innormalis). 



Character. — In shell-structure similar to Truncatulina lobatula, but losing its 

 relatively spiral arrangement in a wild-growing irregularity of the chambers in an 

 apparently infinite variety of forms. 



Occurrence. — This varietal foi'm of T. lobatula has a geographical and bathy- 

 metrical range corresponding with the type. Its earliest recorded appearance as 

 a fossil is from the Neocomian (Bargate beds of Surrey) ; it has also been found 

 in the Gault, the Red Chalk, the Phosphatic Chalk of Taplow ; the Miocene of 

 Bavaria and Muddy Creek (Victoria), the Pliocene of Italy and St. Erth. In the 

 Coralline Crag it is found somewhat rarely in every zone we have examined. 



4. Truncatulina Haidingeri (d'Orbigny), 1846. Plate IV, fig. 18. 

 Part I, 1866, Appendices I and II, Tables, No. 80. 



(?) EoTALiA PEOPiNQtJA (coii Mihist.), Boiiier, 1838. Neues Jahrb. fiir Min., &c., 



p. 389, pi. iii, fig. 54. 

 EoTALiNA Haidingeki, d'0rhu/7ig, 1846. For. Foss. Vien., p. 154, pi. viii, figs. 



7—9. 

 — EnRENBEiiOir, Baili), 1851. Smithsonian Contrib., vol. ii, art. 3, p. 10, 



fies. 11—13. 



