^{page 375 note 1} Written in English.

^{page 376 note 1} The fossils described in this memoir belong mostly, we are told, to the Palæontological Department of the Swedish State Museum at Stockholm.

^{page 377 note 1} Oesterr. Bläatt. für Litt. u. Kunst, 1847; Haidinger's Berichte über A. Mittheil. v. Freund. d. Xaturwiss. in Wien, 1847, p. 268; also Bull. Soc. Geol. France, 1855, ser. 2, vol. xii. p. 157Google Scholar.

^{page 377 note 2} Syst. Sil. de la Bohéeme, 1867, vol. ii. pt. i. p. 372Google Scholar.

^{page 377 note 3} “Genera of Fossil Cephalopods,” Proceed. Boston Soc. Nat. Hist. vol. xxii. 1883, p. 278.Google ScholarBillingsites is a Silurian genus closely allied to Ascoceras. The type species is Asc. Canadense, Billings, , Rep. Prog. Geol. Surv. Canada, 1853–1856, p. 310Google Scholar.

^{page 378 note 4} Their recurved ends which form a little funnel through which the siphuncle passes.

^{page 378 note 1} A fragment of an unknown species, figured by Dr. Lindström, has indications of no less than twelve septa.

^{page 378 note 1} We observe that Dr. Lindström uses the term “nucleus,” in the same sense; but it is scarcely so appropriate.

^{page 379 note 1} From a funnel.