XATITILID^. 
207 
described, we communicated with Dr. Paul Piseher, of the Museum 
of Xatural History, Paris, enclosing woodcuts of this and of another 
species described in the present paper under the name of J\\ Fischer- 
anus. Dr. Fischer has kindly replied to the effect that he finds no 
form either in the Museum of Natural History, the Museum of the 
Ecole des Mines, nor in that of the Sorbonne, which can be identified 
with certainty with either of our specimens. Mith regard to the form 
here called X. rohustus, he observes that it resembles perhaps some 
specimens of Xautilus Toarcensis, d’Orb., but that the umbilicus in 
the latter appears more open and the aperture more dilated. With 
these remarks we fully concur, and we are glad to have the opinion 
of so experienced a palteontologist as Dr. Fischer in confirmation of 
our own.” (Foord and G. C. Crich.) 
Horizon. Upper JL,ias. 
Localities. Moutiers, Courcy (Calvados), France. 
Well represented in the Collection. 
Nautilus Fischeranus, Foord and G. C. Crick. 
1890. Xautilus Fischeranus^ Foord and G. C. Crick, Ann. & Mag. Nat. 
Hist. ser. 6, vol. v. p. 272, f 6. 
Fig. 39. 
Nautilus Fischeranus. — a, lateral view, fehowing the test v\itli fine lines of 
growth and some of the sutures, where the shell is removed ; b, peripheral 
Aiew. Drawn from a specimen in the Britisli Museum (No. 37007). Bather 
more than one third natural size. 
