BIBLIOGRAPTIY. - The following llst comprises some of the more Important works and memoirs which may be consulted with regard to the living and fossil DIbranchlate Cephalopods: - Aristotle, ifistoria de Aninuilibus ; Meyer, Aristofetes Thierkunde, Berlin, 1855; Needham, An Account of some new Microscopical Discoveries, 174.5; Moore (seeundun, "On the Anatomy of the Sagittated Calamom" in The Structure and Physiology of Fishes, 178i; Caviar, Lecons d'Anat. Comparde, and Mdmoire sur les .Cephalopodes et 3t41. leer Anatomic St. dello Chlaje, Memoria su' Cefalopedi, 1829; Macke], System der eergleichenden Anatomic Owen," Cephalopoda," in Todd and Bowman's Cyclopedia of Anatomy and Physiology, 183i-36; Von Siebold, " Anatomy of Cephalopoda," in Siebold and Stannius's Lehrbuch der vergleichenden Anatomie, 1848; Nilne.Edwards, Lecons our to Physfologfe et I' Anatomie comparie, 1857; Kefergtein, "Cephalopods," In Broan's K/assen and Ordnungen des Thierreichs, 1862; Fdrussac and Ale. d'OrbIgny, Histoire naturelle des Ciphalopodes acetabuliferes vivants of fossiles,1835-18; Poll, "Anatomy of Argonauta," in his Testacea utriusgue 1826; Jeanette Power, " The Animal of Argonauts argot' Archie. f. Naturgesch., 1317; Van Beneden, " Wm. our I 'Argonauta," in Norm Mem. de l'Acad. roy. de Bruxelles, 1838; J. E. Gray, " The Animal of Spiracle," Ann. and Mag. Nat. lust., 184.5; Ktinhker, Entwickelungsgeschichre der Cephalopoden, 1844, and "Observations ma the lfectocotyli of Tremoctopus violaceus and Argonauta argot' in Trans. Linn. Soc. 1846; H. " Ueber das 3Iinnehen von Argonada argo Lind die Ilectoeotylen," in Zeitsch. f. Hriss. loot., 1852; Verrill, "Colossal Cephalopods of the North Atlantic," in American Naturalist, 1875; Wagner, " Die fo,,shen U..berresto von nackten Dintenflsehen arcs den Lithographischen Schlefer," in Ablandt. d. Math. phys. Cl. der K. Sayer. Akad. IViss., 1860; Owen, " 13elemtiltes from the Oxford Clay," Phil. Trans., 1844 ; Huxley, " Structure of BeletnnItes," in Mem. Geol. Survey, 1864; Phillips, Monograph of the Belemnitithe (Palmontographlcal Society). 1865-69. (R. A. N.)