204 
NAUTILOIDE A. 
more compressed form, more angular umbilicus, and finer sculpture.” 
{Foord and G. C. Crick.) 
Horizon. Upper Lias. 
Locality. Floore, Xoithampfon.'^hire. 
Ilepresented in the Collection by a single c.xamj)le. 
Nautilus terebratus, Dumortier. 
1874. Naidilus terebratus (Tliiolliere), Dumortier, Etudes Paleontolo- 
giques siir les Depots Jurassifpie.s du Dassin du llhone, pt. iv, 
(Lias Superieur), p. 42. pi. vi. ff, 1- 4. 
1890. Nautilus terebratus., Foord and G. C. C’rick. Ann. -MaL^ Xat. 
Hist. ser. G, vol. v. p. 209, f. .4, and woodcut, 1'. 4. 
Fig. 
Nautilus terebratus . — «, lateral view, showing the raised border of the umbilicus ; 
h, front view. Drawn from a specimen in the British Museum (Xo. C. 3090). 
Two thirds natural size. Except in well-preserved specimens the longitu- 
dinal oimaments are barely visible ; we have therefore given a separate 
figm’e of them (fig. 37). 
Sp. Char. “ Shell inflate'd, subglobose, a little compressed on the 
sides, and slightly flattened upon the periphery, more so in the adult 
than in the young shell. Aperture Avider than high. ITmbilicus 
open, exposing the inner whorls, Tcry deep, the sides steep and 
having an angular border with a thickened rim, which is very cha- 
racteristic. Septa rather distant, being nearly 1 inch apart on the 
periphery, where the height of the whorl is 2 inches in the specimen 
■ 7 -.? 
