Columbarium
hedleyi Iredale,
1936
Description:
Whorls with peripheral keel bearing strong, regularly spaced, flat
triangular spines. Spire whorls smooth above and below periphery except
for growth marks; body whorl with 2-4 strong spiral ribs below
periphery. Base of body whorl weakly ribbed near aperture; anterior
canal spirally ribbed at top, grading to smooth at the tip. Aperture
tear-drop shaped, the inner lip produced beyond columella. Anterior
canal long, twisted, nearly closed, Colour cream or fawn. Operculum
corneous, tear-drop shaped.
Size:
Length up to 108 mm.
Distribution:
Endemic to Australia; known from Gold Coast, Qld, to Gabo Island,
Vic, plus a few specimens from between Mission Beach and Innisfail, Qld.
This distribution will no doubt be filled in by further deep water
trawling. (Darragh, 1987)
Habitat:
Known from 160-800 m, but most common deeper than 400 m. Moderately
common.
Comparison:
Fig. 3 shows an apical view of the three species
of Columbarium found in NSW. C. pagodoides (Fig.
3a) has a
keel with an irregular edge; C. hedleyi (Fig. 3b) has evenly spaced
triangular spines; C. spinicinctum (Fig. 3c)has smaller, regular
triangular spines.
Synonym:
Columbarium trabeatum Iredale, 1936 is based on a worn shell with
poorly developed spines.
Figs.
1,2: Off Sydney in 420-440 m (DLB1224)
Fig.
3: a. Off Terrigal, NSW, in 250-270 fathoms (DLB2928) b. Off Sydney in 420-440 m (DLB1224) c.
Capricorn Channel, NE of Lady Musgrave Is., in 210 m (C.153754)
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