326 
NArXILOIDEA. 
A specimen with a label accompanying it — “ yautilus nohiJl<(, 
Miinst.” — may also belong to this species. Xo species under that 
name seems ever to have been described, and it has probably been 
quoted from a Museum label. It is cited in Bronn’s ‘ Index 
Palaeontologicus,’ Abth. i. Halfte ii. 1848, p. 794, with a reference 
to Keferstein’s ‘ Deutschland geogn. Dargestellt,’ 1828, vi. 95; see 
preface of Schafhautl’s Sud-Bayerns Leth. Geogn. 1863, p. xiii. 
N. nobilis is also mentioned by Schafhautl (in Xeues Jahrb. fiir 
Min. 1852, p. 164), who says that no species under that name could 
be found in Munster’s Collection. 
Horizon. Eocene. 
Locality. Kressenberg, Upper Bavaria. 
Nautilus Deluci, d\\rcbiac. 
1854. Nautilus Deluci, d’Archiac, Description dea Aniniaux Fossiles 
dll Groupe Xuniinulitiqiie de I’lnde, par le Vicomte d’Archiac et 
Jules Ilainie, livr. ii. p. 337, pi. xxxv. ff. 2, 2 a. 
1854. Nautilus major, Carter, Summary of the Geology of India, 
between the Ganges, the Indus, and Cape Comorin, Journal of the 
Bombay Branch of the Royal Asiatic Society, vol. v. p. 254. 
1857. Nautilus Deluci, Carter, Summary of the Geology of India, 
reprinted with “Footnotes” from the Journal of the Bombay 
Branch of the Royal Asiatic Society, vol. v. p. 170, in “ Geological 
Papers on Western India,” &c., edited by H. J. Carter, p. 700 
(footnote). 
1879. Nautilus Deluci, Medlicott and Blanford, A Manual of the 
Geology of India, pt. ii. p. 452. 
1880. Nautilus Deluci, Fedden and Blanford, Mem. Geol. Surv. of 
India, vol. xvii. pp. 39,210. 
1800. Natitilus Deluci, Foord and G. C. Crick, Ann. Mag. Xat. Hist, 
ser. 6, Tol. v. p. 301. 
Char. Shell (cast) much compressed on the sides, widest in 
the umbilical region, thus giving the shell a lenticular form. 
Periphery angular in the young, but becoming a little wider in the 
adult shell, in which it is even slightly channelled (Xo. 36941). 
Umbilicus small. Septa rather approximate ; sutures forming a 
very conspicuous lobe in the region of the umbilicus into which 
they abruptly descend ; on the sides they form a broad curve and 
project strongly upwards and forwards tiU they pass over the 
periphery. The siphuncle is situated close to the dorsal (inner) 
margin of the septa. Xo remains of the test are preserved in 
either of the specimens in the British Museum, nor was it known 
to d’Archiac. 
