X.A.rTILID*E. 
193 
1830. yautilus diihius, Zieten, ibid. p. 24, tab. xviii. ff. 4, a-c. 
1839. Nautilus intermedins, De la Beohe, !Mem. Geol. Surv. ; Report on 
the Geology of Cornwall, Devon, and M"est Somerset, p. 224. 
1842. Nautilus intermedins, d’Orbigny, Pal^ontologie Francaise (Ter- 
rains Jurassiques), tom. i. p. 150, pi. xxvii. 
1845. Nautilus intermedins, Murchison, Outline of the Geology of the 
Xeighboiirhood of Cheltenham (new ed.), Appendix, p. 91. 
1849. Nautilus aratus numismalis, Quenstedt, Die Cephalopoden 
p. oG. 
1849. Nautilus intermedins, d'Orbigny, Prodrome de Paleontologie 
Stratigraphiqiie, xol. i. p. 223. 
1852. Nautilus intermediits, Giebel, Fauna der Vorwelt, Band iii. 
Abth. i. p. 163. 
1853. Nautilus affinis, Chapuis and Dewalque, Description des Fossiles 
des Terrains Secondaires de la Province de Luxembourg (Extrait 
du tom. XXV. des Mem. de TAcad. Roy. de Belgique), p. 34, pi. iii. 
ff . 4 u, 4 5. 
1854. Nautilus intermedins, Morris, Catalogue of British Fossils, 2nd 
ed. p. 307. 
1858. Nautilus intermedins, Ooster, Catalogue des Cephalopodes Fos- 
siles des Alpes Suisses, pt. iii. p. 4. 
? 1858. Nautilus intermedins, Chapuis, Nouvelles Recherches sur les 
Fossiles des Terrains Secondaires de la Province de Luxembourg 
(Extrait du tom. xxxiii. des Memoires de TAcademie Royale de 
Belgique), p. 13, pi. ii. ff . 1 c, 1 d. 
1866. Nautilus intermedins, Falsan and Locard, Monogr. Geologique du 
Mont d'Or Lyonnais, p. 255. 
1869. Nautilus intermedins, Dumortier, foudes Paleontologiquessur les 
Depots Jurassiques du Bassin du Rhone, pt. iii. p. 55. 
1871. Nautilus intermedius, Phillips, Geology of Oxford and the Valley 
of the Thames, p. 131. 
1873. Nautilus intermedius, Collenot, Description Geologique de 
TAuxois, p. 270. 
1876. Nautilus intermedius, Blake, in Tate and Blake’s ‘The Yorkshire 
Lias,’ pt. ii. Palaeontology, p. 312. 
1881. Nautilus intermedius, Gosselet, Esquisse Geologique du Nord de 
la France, fasc. ii. p. 184. 
1882. Nautilus intermedius, Etheridge, Quart. Journ. Geol. Soc. (Pro- 
ceedings — Anniversary Address), vol. xxxviii. p. 171. 
1883. Cenoceras intermedium, Dyatt, Proc. Boston Soc. Nat. Hist, 
yol. xxii. p. 301. 
1884. Nautilus intermedius, L. Mallada, Bol. Com. del Mapa Geol. de 
Espana, vol. xi. Sinopsis de Fosiles de Espaiia, p. 19. (Figured 
ibid. vol. y. 1878, pi. iii. If. 7, 8.) 
Sp. Char. “ Gibbose, umbilicate, concentrically striated ; back 
broad, flattened ; mouth squarish ; siphuncle nearest the external 
edge.” {Soiuerhy.) 
PART II. 
o 
