150 FORAMINIFERA OF THE CRAG. 



4*. Textilaria agglutinans, d'Orb., Var. densa, nov. Plate VI, figs. 17 a, b. 



Textularia agglutinans, Parker and Jones, 1865. Phil. Trans., vol. civ, p. 369, 



pi. xv, fig. 21. 



Characters. — Shell subcylindrical, thick, tapering to the blunt aboral apex; 

 somewhat compressed, and with the transverse section ovate ; chambers numerous, 

 compact, narrow in side view, and horizontal. 



This belongs to the agglutinans type, as represented by the thick Arctic form 

 figured in the ' Phil. Trans.,' 1865, pi. xv, fig. 21, which, however, is relatively 

 smaller, rather more compressed, and tapers more rapidly to the apex, having 

 widened more rapidly in growth. Both of these forms approach the T. gramen 

 type in their relative compression, having produced a subacute edge on at least one 

 margin ; in T. gramen, d'Orb., the chambers are oblique, and both edges are sharp. 



Analogies may be found for this varietal form among T. trochus, T. turris, 

 and T. Barrettii ; but in detail these Textilariee differ considerably. 



Occurrence. — Textilaria agglutinans, var. densa. The specimen figured, PI. VI, 

 fig. 17, was found at Broom Hill, zone d. 



5. Textilaria trochus, d'Orbigny, 1840. Plate III, figs. 17, 18. 



Part I, 1866, Appendix II, Table, No. 62. 



Textularia trochus, d'Orbigny, 18-10. Mem. Soc Geol. Fr., vol. iv, p. 45, pi. iv, 



figs. 25, 26. 

 — Beuss, 1845. Geiuitz's Grundriss, &c, p. 681, pi. xxiv,fig. 76. 

 CUNEiFORMis, var. conica, Williamson, 1858. Eec. Por. Gt. Br., 



p. 75, pi. vi, figs. 160, 161. 

 trochus, Eley, 1859. Geol. Garden, p. 199, pi. vi, fig. 34. 



— — Parker and Jones, 1860. Quart. Journ. Geol. Soc, vol. xvi 



p. 302 (table). 

 Iidetn, 1862. In Carpenter's Introd., App., p. 311. 

 Jones, 1863. Geologist, vol. vi, p. 294, pi. xv, fig. 3. 

 Brady, 1864. Trans. Linn. Soc, vol. xxiv, p. 473. 

 cuneiform] s, var. conica, AlcocJc, 1S64. Proc Lit. Phil. Manchester, 



vol. iv, p. 206. 



— trochus, Brady, 1865. Nat. Hist. Trans. North, and Durham, vol.i, 



p. 112. 

 /., P., and B., 1866. Monogr. Foram. Crag, Appendix II, 

 Table, No. 62. 



