30S 
NAUTILOIDEV. 
under the provisional name X. perlatus, a more compressed form 
from Alabama, that would doubtless agree more nearly in the out- 
line of its aperture, and in several other respects, with some of the 
Indian forms, as well as with the Chilian X. Orbigmjanus^ Forbes h 
I have not seen specimens of the Alabama shell showing the position 
of its siphuncle, but I very much doubt its identity (judging from 
its form only) with X. Delcayi proper, as I have seen no tendency 
among our specimens (that do not differ also in the position of the 
siphuncle) to assume this more compressed form.’’ {Meek.) 
Remarks. Dr. Morton’s original type specimens of X. Dekayi are 
stated by Meek to have come from Monmouth and Burlington 
Counties, Xew Jersey, where the species occurs “ in the Greensand 
Marls of the Cretaceous,” and also occurs at various other localities 
in that State at the same horizon.” 
Whiteaves^ refers to a form described by Dr. B. F. Shumard in 
the first volume of the ‘ Transactions ’ of the Academy of Science 
of St. Louis (1857, p. 124). It appears that Dr. Shumard iden- 
tified a species of Xautilus found in “ the dark, argillaceous, com- 
pact limestone of Xanaimo River, Vancouver Island,” as X. Dekayi, 
Morton. Mr. 'Whiteaves remarks that “ imperfect or badly pre- 
served specimens of Xautilus Camphelli [Meek]® are difficult to 
distinguish from X. Dekayi, and as Dr. Shumard states that his 
fossil was in bad condition, it is quite likely that the Xautilus 
which he supposed might be X. Dekayi was really X. Camphelli, 
especially when it is borne in mind that the latter species was not 
described by Meek until 1861, four years after the publication of 
Dr. Shumard's paper. However this may be, the existence of 
Xautilus Dekayi in the Vancouver Cretaceous is not very satisfac- 
torily established, and needs confirmation. It has not yet been 
recorded from rocks of similar age in California.” 
Horizon. Cretaceous 
Locality. Sumter Co., Alabama. 
Fairly well represented in the Collection. 
^ In Darwin’s “ Cteological Observations on Coral Reefs, Volcanic Islands, 
and on South America, being the Geology of the Voyage of the ‘ Beagle,’ &c.” 
1846, pt. hi. Appendix, p. 265. 
2 Geol. Surv. of Canada, Mesozoic Fossils, vol. i. pt. ii. p. 99. 
^ Proc. Acad. Nat. Sci. Philadelphia, 1861, p. 318. 
Probably Upper Cretaceous, but I can find no statement in the report of 
the Geological Survey of Alabama (1883) with reference to any subdivisions of 
the Cretaceous in that State. 
