290 CEPHALOPODA. 



Order TETRABRANCHIATA, E. Owen. 



Family NAUTILIDiE, R. Owen. 



Uenus NAUTILUS (Breynius, 1732), Linnaeus, 1767. 



Dissertatio, 1732, p. 14. 

 Systema Natime, 1767, ed. 12, vol. i. part 2, p. 1161. 



Nautilus centralis, J. Sowerby, 1812. 



Nautilus centralis. 

 Mineral Concliologv, 1812, pi. 1, left-hand figure. 

 Mineral OouchologV, 1843, pi. 627. fig. 6. 

 Mon. Pal. Soe. 1849, pi. iii. figs. 1"-1% pi. viii. fig. 2, p. 45 (figs. 1% P, 



Wetherell Coll., & fig. I', Sowerbj Coll.). 

 Di-TOn's 'Sussex/ 1850, pi. xiv. fig. 28, pp. 110, 121, 228. (Di.xon Coll.) 

 Cat. Foss. Cepb. British Museum, 1891, part 2, p. 316. 



Horizon and Localities. 



Lower Eocene. — London Clay. Ilighgate ; near Chalk Farm ; Bognor ; 

 Sheppoy ; Whetstone ; Ilanipstead Tunnel ; Primrose Hill. 



Nautilus imperialis, J. Sowerby, 1812. 



Nautilus imperialis. 



Mineral Conchology, 1812, pi. 1, upper and right-hand figures. (Sowerbv 

 Coll.) 



Nautilus Lamarcki. 



Coq. Foss. Paris, 1835, vol. ii. pi. c. tig. 1, p. 767. 



Nautilus imperialis. 



Mineral Conchology, 1843, pi. 027. fig. 4. (Sowerby Coll.) 



Mon. Pal. Soc. 1849, pi. v., pi. viii. fig. 1, p. 47. (F. E. Edwards & Sowerby 



Colls.) 

 Dixon's ' Sussex,' 1850, pp. 100, 120, 228. 



Nautilus Lamarcki. 



Desc. Anim. sans Vert. 1865, vol. iii. p. 025. 



Nautiltts imperialis. 



Cat. Foss. Ceph. British Museum, 1891, part 2, p. 321. 



Horizons and Lucalities. 

 Middle Eocene. — Bracklesham Beds. Bracklesham Bay. 

 Lower Eocene. — London Clay. Highgate ; Well at Hampstead ; Primrose 

 Hill ; Potter's Bar ; Minster, Sheppe3' ; Sutton. 



Nautilus regalis, J . Sowerby, 1822. 



Nautilus regalis. 



y Mineral Conchology, 1822, pi. 355 (type missing). 



Mineral Conchology, 1843, pi. 027. fig. 6. (Sowerby Coll) 



Mon. Pal. Soc. 1849, pi. iv., pi. viii. fig. 5, p. 46. (Sowerby Coll.) 



Dixon's ' Sussex,' 1850, pp. 121, 228. 



Cat. Foss. Ceph. British Museum, 1891, part 2, p. 318. 



Horizon atid Localities. 



Luwer Eocene. — London Clay. Copenhagen Fields, Islington ; Potter's 

 Bar; Bognor; St. Katharine's Docks; Sheppey?; Boreham Wood, 

 Finchlev. 



