228 
XATJTILOIDEA. 
yaniilus lincolatus. — a, lateral view, showing tlic small umbilicus and the thick, 
smooth test, partly i-emoved from the body-chamber ; h, front view, showing 
the flattened periphery. Drawn from a specimen in the British ^luseuni 
(Xo. C. 3188). Rather more than two fifths natural size. 
Horizon. Upper Lias (France). Inferior Oolite (England). 
Localities. British. Yeovil, Somersetshire (Xo. 300o2); Vetney 
Cross, Dorsetshire. — Foreirjo. Fontaine-Etoupe-Four (Calvados), 
France. 
Well represented in the Collection. 
Nautilus perinflatus, Foord and G. C. Crick. 
1890. Xautihis perinjlatus, Foord and G. C. Crick, Ann. & Mag. Xat. 
Hist. ser. 6, vol. v. p. 286, f. 15. 
Bp. Char. “ Shell much inflated, very slightly flattened on the 
sides ; peripheral area scarcely defined. Whorls semilunate in sec- 
tion, rather more than twice as wide as high, deeply embracing. 
Umbilicus very small. Septa rather approximate ; sutures slightly 
curved on the sides of the shell and forming a shallow sinus on the , 
periphery. Siphuncle near the inner margin. Test thick, marked ^ 
only" with lines of growth. 
Benmrhs. “ This species closely resembles the X. suhinjlatvs of |^‘ 
. . . A small specimen from the Upper Lias of Fontaine-Etoupe- 
Four probably belongs to this species.” (Foord and G. C. Cricl-.) 
Fig. 51. 
