FAO Species Identification Guide for Fishery Purposes Western

758 Cephalopods
Sepia bartletti (Iredale, 1954)
En - Bartletts cuttlefish.
Known only from the cuttlebone. Status uncertain.
Cuttlebone length 73 mm. Dorsal surface of cuttlebone
without sculpturing; spine absent; a shallow, wide
sulcus present on the last loculus only, absent from
striated zone; inner cone limbs extending to last loculus.
Fisheries importance unknown. Known only from the
Misima and the Conflict Group of islands, Louisiade
Archipelago (southeast of Papua New Guinea).
Sepia cottoni Adam, 1979
dorsal view
En - Cottons cuttlefish.
Maximum mantle length 65 mm. Male arms all elongate, twice as long as in
females, tips of arms I, II, andIV thread-like; arms III with protective
membrane in middle part widened and thickened with transverse
ridges; ridges alternate, uniting inner margin of one membrane and outer
margin of opposite membrane, each ridge with 2 small suckers. Male arms
proximally with a few normal-sized biserial suckers, followed by 7 or 8
tetraserial rows of large suckers; distally, suckers biserial, reduced,
disappearing on thread-like tips of arms I, II, and IV. Female arms with
biserial suckers at the base, tetraserial suckers medially, biserial suckers at
distal tips. Tentacular club with 5 suckers in transverse rows; suckers
differing markedly in size, about 6 in the middle of club twice as wide as
others. Dorsal and ventral protective membranes not fused at base of club.
Cuttlebone lanceolate; spine present, keel(s) absent; sulcus, shallow,
narrow; striae slightly convex-straight; inner cone limbs thickened posteriorly
forming a rounded ridge; outer cone limbs expanded forming 2 short
wings. At depths from 83 to 164 m. Importance to fisheries unknown.
Western Australia and the Gulf of Carpentaria; possibly Viet Nam
(unconfirmed records). One cuttlebone collected from North Stradbroke
Island Queensland, Australia implying a northern Australian distribution.
?
?
?
cuttlebone
ventral view
ventral view
cuttlebone