70 FORAMINIFERA OF THE CRAG. 



Ceistellaeia suBAECUATULA, var. ELONGATA, WUHamson, 1858. Rec. For., Gt. Br., 



p. 30, pi. 2, fig. 62. 

 Maeginulina suBLiTf us, Parker and Jones, 1860. Quart. Journ. Geol. Soc, vol. xvi, 

 p. 457, pi. 20, fig. 37. 

 — LiTUUS, Id., 1862. App. Carpenter's Introd., p. 310; 1865, Phil. 



Trans., vol. civ, p. 343, pi. 13, figs. 14 \ 14 '. 



Characters. — Shell lituate or oblong, sometimes flattened, composed of several more 

 or less oblique segments, the earlier chambers arranged on a spiral or nautiloid plan ; 

 the later chambers usually wider, and always in a linear series. Chambers often ventri- 

 cose, and the septal lines correspondingly constricted. Margin of the shell thin, but 

 rarely carinate. Length ^ inch or more. 



Marffitiulina glabra, with its feeble, elongated, smooth, partially coiled shell, is one of 

 the intermediate links of Nodosarina. Indeed, a well-coiled bold specimen of this variety 

 would have nothing to distinguish it from Cristdlaria rofulata. 



In distribution geologically, it accompanies its natural allies, commencing in the 

 Upper Trias and reappearing in most of the fossiliferous deposits up to the later 

 Tertiaries. 



We have seen recent specimens from the west coast of Scotland (shallow water), 

 from the Norwegian coast, the Red Sea (557 fathoms), and from the South Atlantic 

 (260 fathoms) ; besides which it occurs off the coast of New Jersey, in the Mediterranean, 

 and doubtless in many other localities. 



One or two very small examples in Mr. S. Wood's collection from Sutton constitute 

 the only evidence we have of its presence in the Crag deposits. 



Marginulina raphanus, Limw. Plate I, fig. 21. 



Nautilus raphanus, Zwh^, 1758. Syst. Nat., edit, x, p. 711, No. 243 ; edit, xii, 1767. 

 p. 1164, No. 283. 



— GKANUM, Id. lb.. No. 244, edit. .\ii, 1767, p. 1164, No. 284. 



— (Orthoceeas) costatus, Batsch, 1/91. Sechs Kupfertafeln, pi. 1, 



figs, la — Iff. 

 Makginulina raphanus, D'Orb., 1826. Ann. Sc. Nat., vol. vii, p. 258, No. 1, pi. 10, 

 figs. 7, 8 ; Modele No. 6. 



— SUBLITUUS, Id., 1826. Ann. Sc. Nat., vol. vii, p. 259, No. 9. 



— nxvHiLtivs, Ehrenberff, 1839. Transact. Berlin Akad. for 1838, p. 59. 



pi. 1, figs. 2a,b. 

 Okthocerina multicostata, Bontemann, 1854. Liasformation, p. 35, pi. 2, fig. 14. 

 Cristellaria SUBAECUATULA, var. cosTATA, Williamson, 1858. Rec. For. Gr, 13r., 



p. 31, pi. 2, fig. 63. 



