$ 280. THE CEPHALOPODA. 269 
dis, as well as the females on which they are found, will admit the cor- 
rectness of the preceding statement, and, also, must have perceived the very 
remarkable abortiveness of the males of Argonauta and Tremoctopus.© 
Famity: Navrrbina. 
Genera: Nautilus, Spirula. 
Faminty: Ocropopa. 
Genera: Argonauta, Tremoctopus, Octopus, Eledone. 
Famity: Lowicina. 
Genera: Sepia, Loligo, Onychoteuthis, Sepioteuthis, Ommastrephes. Loli- 
gopsis (Perothis), Cranchia, Rossia, Sepiola. 
BIBLIOGRAPHY. 
Swammerdamm. Tergliederung der spanischen Seeckatze (Sepiae mariss, 
in the Bibel der Natur. Leipzig, 1752, p. 346, Taf. L.—LII. 
Needham. An Account of some new Microscopical Discoveries. Lon- 
don, 1745, or the same in French. Leide, 1747. It contains the anatomy 
of Loligo vulgaris. 
Cuvier. Mémoire sur les Cephalopodes et leur Anatomie, in the Mém, 
sur les Mollusques, loc. cit. Pl. L-IV. 
Brandt. Medizin. Zool. II. p. 298, Taf XX XI.-IT. 
Owen. Memoir on the pearly Nautilus. London, 1832 (in the Isis, 
1835, p. 1, or in the Ann. d. Sc. Nat. 1833, XXVIII. p. 87). Also 
description of some new and rare Cephalopoda, in the Trans. of the Zool. 
Soc. II. 1841, p. 103; and the Art. Cephalopoda, in the Cyclopaedia of 
Anatomy, I. p. 517; also the twenty-third of the Hunterian Lectures, on 
Cephalopods with chambered shells, 1843. 
Grant. On the structure and characters of Loligopsis, in the Trans. of 
the Zool. Soc. I. 1835, p. 21, Pl. II.; also on the Anatomy of the Scpiola 
vulgaris, Ibid. p. 77, Pl. XI. (in Isis, 1836, p. 389, Taf. X. fig. 4-10). 
Rathké. Perothis, ein neues Genus der Cephalopoden, in the Mém. 
présentés 4 ]’Acad. impér. de St. Petersberg, Il. 1835, p. 149, Taf. I. IT. 
Van Beneden. Meém. sur |’Argonaute, in the Nouy. Mém. de |’Acad. 
Roy. des Se. et belles-lettres de Bruxelles, XI. 1838, or in the Exer. zoot. 
Fase. I. 1839, Pl. I.-V. 
Férussac and D’Orbigny. Hist. nat. gén. et particuliére des Mol- 
lusques. Cephalopodes acétabuliféres. Paris, 1834. ; 
Valenciennes. Nouv. Recherch. sur le Nautile flambé, in the Arch. du 
Muséum (hist. nat. IT. 1841, Pl. VITI.-XI. 
Kolliker. Entwickelungsgeschichte der Cephalopoden. Ziirich, 1844. 
8 I am indebted to Kulliker for the examination have been preserved in alcohol a long time, yet I 
of these individuals of Hectocotylus tremvcto- was able to assure myself of the correctness of 
podis, of whict. I found two in one and the same many:of Kélliker’s statements, and thereby to be 
cavity of the mantle of a female. Although they convinced of the real nature of these animals.* 
* [ § 230, note 3.] See my note below under § 261, note 6, — Ep. 
23* 
