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Page 102 THE FESTIVUS Vol. XXXIX: Supplement
Plate 16
Figure 1 Petaloconchus cf. keenae Hadfield & Kay, 1972.
Île Clipperton, (10°18’52”N, 109°12’27”W) N-NE side, live, underside of dead coral head in sand, 8-21 m (25-70
ft), H 2 O 84°F, leg. K.L. Kaiser (ICF-15-98), diving from R/V Urracá, 21 Apr. 1998. KLK Coll. 200612. Size: 32.8
mm, coiled. Photograph by P. Sadeghian.
Figure 2 Petaloconchus cf. keenae Hadfield & Kay, 1972.
Île Clipperton, (10°17’04”N, 109°12’46”W) S-SE corner, empty shell, under turnable dead coral head, 12-30 m (40-
100 ft), leg. K.L. Kaiser (ICF-6-98), diving from R/V Urracá, 21 Apr.-5 May 1998. KLK Coll. 200602. Size: 10.0
mm, aperture, 2.0 mm. Photographs by P. Sadeghian.
Figure 3 Eualetes cf. tulipa (Chenu, 1843).
Île Clipperton, (10°19’23”N, 109°14’22”W), empty shell, dredged, 91 m (300 ft), leg. K.L. Kaiser (ICF-40-94),
M/V Royal Star, 23 Apr. 1994. KLK Coll. 201393. Size: 42.0 mm. Photograph by P. Sadeghian.
Figure 4 Petaloconchus sp. 1.
Île Clipperton, (10°19’07”N, 109°13’55”W), ?live, SCUBA/ shakings, sand pockets with rubble and Porites spp.
heads, 14-19 m (46-62 ft), H 2 O 83°F, leg. K.L. Kaiser (ICF-9-94), diving from M/V Royal Star, 17 Apr. 1994. KLK
Coll. 200600. Size: 6.0 mm. Photograph by P. Sadeghian.
Figures 5a, 5b Dendropoma meroclista Hadfield & Kay, 1972.
Île Clipperton, (10°17’16”N, 109°12’45”W) SE corner, colony of empty shells embedded in coralline algae on coral
rock, intertidal, PM low tide, leg. K.L. Kaiser, R/V Urracá, 28 Apr. 1998. KLK Coll. 200618. Size: Figure 5a, 48.0
mm (coral rock): Figure 5b, 3.8 mm (two specimens). Photographs by P. Sadeghian.
Figure 6 Dendropoma sp. 1.
Île Clipperton, (10°19’23”N, 109°14’22”W), live, shakings of dead coral, 91 m (300 ft), leg. K.L. Kaiser (ICF-
40-94), dredged, M/V Royal Star, 23 Apr. 1994. KLK Coll. 200579. Size: 5.50 mm. Photograph by P. Sadeghian.
Operculum showing in fractured shell.
Figure 7 Cerithium cf. atromaginatum Dautzenberg & Bouge, 1933.
Île Clipperton, (10°17.447’N, 109°13.265’W) SW side, crabbed, turnable coral rock on sand, snorkeling, 0-1m (0-3
ft), H 2 O 82°F, leg. K.L. Kaiser (ICF-017-05), Jean-Louis Etienne Expedition, 24 Jan. 2005. KLK Coll. 210135.
Size: 11.0 mm. Photograph by P. Sadeghian.
Figures 8a, 8b Cerithium echinatum Lamarck, 1822.
Île Clipperton, (10°19’03”N, 109°13’59”W) NW corner, empty shell, under turnable dead coral, 9-12 m (30-40 ft),
H 2 O 83°F, leg. K.L. Kaiser (ICF-11-98), diving from R/V Urracá, 27 Apr. 1998. KLK Coll. 200622. Size: 23.6 mm.
Photographs by P. Sadeghian.
Figures 9a, 9b Cerithium maculosum Kiener, 1841.
Île Clipperton, (10°18.001’N, 109°13.900’W) SW side, live, sand and coral rock, snorkeling, 1 m (3 ft), H 2 O 82°F,
leg. K.L. Kaiser (ICF-005-05), Jean-Louis Etienne Expedition, 19 Jan. 2005. KLK Coll. 210037. Size: 37.8 mm.
Photographs by P. Sadeghian.