208 
NAT7TILOIDEA. 
Sjy. Char. “ Shell compressed, with deeply embracing whorls, 
rapidly increasing in diameter ; flattened upon the sides, with a 
narrowly rounded periphery. Umbilicus deep, with rather steeply 
sloping sides, the inner whorls exposed. Septa somewhat distant 
from each other, being about three quarters of an inch apart in the 
median line of the periphery, where the thickness of the whorl is 
2 inches. Sutures slightly curved upon the sides and forming a 
very shallow sinus upon the periphery. Test smooth, showing only 
irregular lines of growth. Only a part of the body-chamber is 
preserved, so that the proportion it bears to the septate part of the 
shell cannot be ascertained. 
Remarks. “ The present form is so unlike any other fossil Xautilus, 
that no comparison can be made. 
“ A figure of the present species was submitted to Dr. Paul Fischer 
(along with one of X. robust us), and he fails to identify it with any 
species known to him, but suggests the possibility of its being repre- 
sented in the private collection of the late Eugene Eudes-Deslong- 
champs at Caen. However this may be, we, like Dr. Fischer, can 
find no published description or figure which can be identified 
with it. 
“ AVe have much pleasure in dedicating this beautiful species to 
Dr. Paul Fischer, of Paris, who has laid us under many obligations 
in connexion with the Jurassic Xautili.” (Foord and G. C. Crick.) 
Honzon. Upper Lias. 
Loccdity. Fontaine-Etoupe-Four (Calvados), France. 
llepresented in the Collection by a single example. 
Nautilus ornatus, Foord and G. C. Crick. 
1890. Xautilus ornatus, Foord and G. C. Crick, Ann. & Mag. Nat. Hist, 
ser. 6, vol. v. p. 273, f. 7. 
Sp. Char. “ Shell inflated, rapidly enlarging ; sides compressed, 
but somewhat inflated in the middle ; periphery broad, flattened. 
Umbihcus of moderate size and exposing a portion of the inner 
whorls ; sides steep, margin rounded. Septa rather distant, being 
2^ inches apart where the^ whorl has a height of about 6 inches. 
Siphuncle rather large, situated above the centre. The test is orna- 
mented in the adult shell with a series of longitudinal flattened 
bands separated by incised lines ; these bands are almost entirely 
confined to the periphery, very few of them extending to the sides 
of the shell ; they number about thirteen to an inch. The whole of 
the test is covered with fine subregular lines of growth, which 
