114 
NAUTILOIDEA. 
Ccelonautilus multicarinatus, J. de C. Sowerby, sp. 
182o. Nautilus multicarinatus (pars), J. de C. Sowerby, Min. Conch. 
Tol. T. p. 129, tab. cccclxxxii. f. 1 (excl. f. 2). 
1836. Nautilus multicarinaius, Phillips, Geology of Yorkshire, pt. ii. 
p. 232. 
1843. Nautilus multicarinatus, Portlock, Geol. of Londonden-y, p. 40o. 
1844. Nautilus {Temnocheilus) 2yorcatus,lSl^Coy, Synop. Carboniferous 
Poss. Ireland, p. 22, pi. iii. f. 6. 
1849. Nautilus multicarinatus, d’Orbigny, Prodr. de Paleont. Stratigr. 
vol. i. p. 110. 
1852. Nautilus multicarinatus (pars), Giebel, Fauna der Vorwelt, 
Band iii. Abth. i. p. 174. 
1854. Nautilus multicarinatus, Mon-is, Cat. British Foss. 2nd ed. p. 3C8. 
1860. TemnocJieilus multicarinatus, Griffith, Joum. Geol. Soc. Dublin, 
Yol. ix. p. 57. 
1878. Nautilus multicarinatus, de Koninck, Faune du Calcaire Cai- 
bonifere de la Belgique (Annales du Mus. Boy. dllist. ^'at. de 
Belgique, tom. ii.), p. 139, pi. xxix. ff. 4, a-c. 
Fig. 16. 
Ccdonautilus multicarinatus. — a, lateral view, showing the central perforation ; 
h, peripheral view, partly restored, the specimen having been cut and 
polished on one side to show the septa &c. Drawn from a specimen in the 
Collection. The figure is slightly smaller than the original. 
Sp. Char. The following is Sowerby’s description of this species: — 
“ Discoid, subglobose ; inner whorls half exposed in a large deep 
umbilicus ; edge of the umbihcus angular ; front compressed, with 
several carinae on each side of the middle.” He continues : — “ The 
sides of the whorls of this F’autilus are very narrow and concave ; 
the front, which is broad,' has in its middle a concave band, on each 
