SPECIMEJfS OF FOSSIL CEPHALOPODA. 
71 
Nautilus clitellarius, J. de C. Sowerby, Trans. Geol. Soc. [2], vol. v, 
1840, pi. xl, f. 5 6 ; expl. of plate. Coal-Measures : Coalbrookdale, 
Shropshire. [C. 4692.] 
Nautilus comptoni, J. Sowerby, Min. Conch, vol. ii, p. 45, 1816, 
p. cxxi, belongs to the Foraminifera. 
Nautilus concavus, J. de C. Sowerby, Trans. Geol. Soc. [2], vol. v, 
1840, pi. xl, f. 6 (right-hand figures) ; expl. of plate. Coal-Mea- 
sures : Coalbrookdale, Shropshire. [C. 4698.] 
Nautilus cyclostomus, J. Phillips, Geol. Yorks, pt. ii, 1836, p. 232, 
pi. xvii, f. 29. Carboniferous Limestone : Castleton, Derbyshire. 
[C. 224.] 
Nautilus cyclostomus ?, J. Phillips, Geol. Yorks, pt. ii, 1836, p. 232, 
pi. xxi, f. 13 (somewhat reduced). Carboniferous Limestone : Whit- 
well, Derbyshire. [C. 226.] 
Nautilus deslongchampsianusy A. d’Orbigny : D. Sharpe, Loss. 
Mollusca Chalk (Mon. Pal. Soc.), pt. i, 1853, p. 12, pi. iii, ff. 1 a, h. 
Grey Chalk : near Lewes, Sussex. [32552 a.~] 
Nautilus deslongchampsianus, A. d’Orbigny : A. H. Foord & G. C. 
Crick, V. Nautilus neocomiensis9 A. d’Orbigny ; D. Sharpe. 
Nautilus discus, J. Sowerby, Min. Conch, vol. i, p. 39, 1813, pi. xiii. 
Carboniferous Limestone ; near Kendal, Westmoreland. [43866.] 
Nautilus dorsalis, J. Phillips, Geol. Yorks, pt. ii, 1836, p. 231, 
pi. xvii, f. 17. Carboniferous Limestone : Loc. (?). [C. 211.] 
Nautilus dorsalis, L Phillips, Geol. Yorks, pt. ii, 1836, p. 231, 
pi. xviii, ff. 1, 2. Solenocheilus do7'salis (J. Phillips) : A. H. Foord, 
Cat. Foss. Ceph., British Museum, pt. ii, 1891, p. 166, ff. 27 a, b. 
Carboniferous Limestone : Bolland, Yorkshire. [C. 2971.] 
Nautilus elegans, J. Sowerby, Min. Conch, vol. ii, p. 33, 1816, 
pi. cxvi. Id . : G. A. Mantell, Foss. S. Downs, 1822, pi. xx, f. 1. 
Id . : A. H. Foord & G. C. Crick, Geol. Mag. [3], vol. vii, 1890, 
p. 548, ff. 1 «, b. Id . : A. H. Foord, Cat. Foss. Ceph., British Museum, 
pt. ii, 1891, p. 272, ff. 60a, 6. Lower Chalk: Kingmer, Sussex. 
[5761.] 
