S FORAMINIFERA OF THE CRAG. 



Trilocdlina EBURNEA, Id., 1839. For. Cuba, p. 180, pi. 10, figs. 21— 23. 



— Mautiana, T. Chemnitziana, T. nitida, D'Orb., 1839. For. Canar., pi. 3, 



figs. 16—24. 



— consobrina, B'Orb., 1846. Foram. Foss. Vien., p. 277, pi. 17, figs. 



10—12. 

 QuiNQUELOCULiNA Mayeriana, Irf., 1846. For. Foss. Vien., p. 287, pi. 18, figs. 1 — 3. 

 TiULOCULiNA MiCRODON, Reuss, 1850. Denks. Akad. Wien., vol. i, p. 382, pi. 49, fig. 9. 



— NiTENs, 7rf., 1850. Ibid., p. 383, pi. 109, fig. 10. 



MiLiOLiNA SEMiNtLUM, var. OBLONGA, Williamson, 1858. Rec. Foram. Gt. Brit., p. 86, 



pi. 7, figs. 186, 187. 

 Triloculina OBLONGA, Parker and Jones, 1857. Ann. Nat. Hist., ser. 2, vol. xix, p. 300, 

 pi. 10, fig. 37; 1859, ibid., ser. 3, vol. iv, p. 343; 1863, vol. xii, 

 p. 437. 

 MiLiOLA (Triloculina) consobrina, Egger, 1857. Foram. Mioc.-Schicht., p. 10, pi. 2, 



figs. 7, 8. 

 Triloculina oblonga, Brady, 1864. Trans. Linn. Soc, vol. xxiv, p. 4/2. 

 MiLioLA (QuiNauELOCULiNA) OBLONGA, Parker and Jones, 1865. Phil. Trans., vol. civ, 



p. 411, pi. 15, figs. 34—41 ; pi. 17, 85, a, 85, b, 

 86, a, 86, b. 



Characters. — Shell, elongated, compressed, margins of the chambers rounded. Length, 

 T^th inch. 



It is of but little consequence whether we regard this feeble flattened Miliola as 

 belonging to the Triloculine or the Quinqueloculine group. In the feeblest forms, which 

 are perhaps the most distinct from the type, it is Triloculine ; but examples may easily be 

 found which would form a regular series, passing by insensible gradations to the fully 

 developed Quinqueloculinu seminulum. The Crag specimens are generally Triloculine ; 

 those in Mr. Searles Wood's collection from Sutton are singularly fine ; from the Crag 

 with Cardifa senilis (Gedgrave) we have but one or two small examples. In Mr. Sorby's 

 gatherings from the Bridlington Crag the specimens are numerous, but not so large as 

 those from Sutton. 



Triloculina ohlonga is found in shallow water, associated with other Miliola, in seas 

 of every latitude ; and minute specimens have been met with, even in abyssal depths, in 

 the North Atlantic (2330 fathoms). We find it in most marine Tertiary clays, but it 

 does not seem to date back further than the Eocene period. 



The synonymy of Miliola seminulum, var. oblonga, is very extensive. This variety 

 accompanies the better marked forms of Miliola, and has received very many appel- 

 lations. 



