Giegatim 10. vel 15. maies foemellam perfequuntur. Viclitat Muiicibus tnbulis. 20. LEPUS. Anidh. <-^j^In montibus Yemen non obvius» 21. URS.S. Dubh. c_J«3

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Arms eight or (inclusive of the tentacles when present) ten in number; furnished with longitudinal rows of acetabular or suckers along their inner surfaces. Funnel a closed tube. Normally but a single pair each of ctenidia and renal organs present. Visceral mass naked; shell much reduced and embedded in the tissues of the mantle, frequently absent. Eyes highly developed and with closed cavities; a crystalline lens present. Characteristic and intricately constructed dermal pigment cells called "chromatophores" are developed in the integument.This order includes all living cephalopods except Nautilus.Suborder OCTOPODA Leach 18 17. Octopia + Argonautea Rafinesque 1815, p. 139 (fide Binney and Tryon, p. 14).