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Venezuela, Falcon, Los Taques, muddy-sand bottom , by diving, at 3.6 m depth, collected August 1988, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Mexico, Sonora, Bahia La Cholla, low tide on sand flats, collected 1982, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Australia, Queensland, S of Yeppoon, Keppel Bay, by fishing, collected 1980, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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United States, California, Santa Catalina Island, by trawling, at 6 m depth, collected December 1974, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Iceland, Höfuðborgarsvæðið, Kollafjördur, Gufunes, taken alive near low tide level, collected June 1974, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Iceland, Reykjavik, Geldinganes, at 4 m depth, collected May 1972, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker
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Japan, Hokkaidô, Wakanai, sandy-mud bottom , by trawling, at 10-50 m depth, collected 1959, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Panama, Panamá, Archipiélago de las Perlas, Isla Pedro Gonzáles, sandy bottom , by trawling, at 9 m depth, collected February 1987, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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New Zealand, Marlborough, Pelorus Sound, Maud Island, by dredging, at 30-70 m depth, ex coll. M.A. Wotton. Image by Joop Trausel and Frans Slieker
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New Zealand, Marlborough, Marlborough Sounds, by fishing, collected 1967, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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New Zealand, Waikato, Coromandel Peninsula, Kereta, by fishing, collected 1972, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker.
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South Africa, Eastern Cape, Port Elizabeth, Hougham Park, washed ashore, collected July 1990, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Australia, Queensland, Dingo Beach, low tide, burried in sandbar, collected 1990, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Japan, Kôchi, Kashiwajima, sand-gravel bottom, by trawling, at 10-100 m depth, collected 1959, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Philippines, Central Visayas, Bohol, collected May 2011, ex coll. F.J.A. Slieker Jr.. Image by Joop Trausel and Frans Slieker
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Greece, Attiki, Attiki, Aegina, Marathon Bay, at 3 m depth, collected 1997-07-00, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker.
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Tunisia, Medenine, Ile de Jerba, Plage de Sidi Mahres, beached, collected May 1995, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker
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Egypt, Janub Sina’, Gulf of Aqaba, Dahab, beached, collected September 1992, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker
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Australia, Northern Territory, Darwin, Tree Point, collected 10th November 1984, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Japan, Mie, Suruga Bay, sandy-mud bottom, by trawling, at 10-30 m depth, collected 1990, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Philippines, Zamboanga Peninsula, by fishing, collected 1988, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Australia, South Australia, Vallaroo, ex coll. F.J.A. Slieker Jr.. Image by Joop Trausel and Frans Slieker
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Australia, South Australia, Port Adelaide, Barkers' Inlet, by trawling, at 4.5 m depth, collected October 1989, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker