C. VlLVENS 
Seguenzioidea and Trochoidea from French Polynesia 
SYSTEMATICS 
I follow here the classification of Williams et al. 
(2008, 2010) where, among other things : 
♦ Calliotropidae and Chilodontidae are ranked as 
families of superfamily Seguenzioidea, not 
subfamilies of Chilodontidae sensu Bouchet & Rocroi 
(2005); 
♦ Calliostomatidae are ranked as a family of 
superfamily Trochoidea (besides true Trochidae and 
other families as Solariellidae), as did the fïrst 
Marshall (1995a) who erected the group to the family 
level. 
Superfamily SEGUENZIOIDEA Verrill, 1884 
Family CALLIOTROPIDAE Hickman & McLean, 
1990 
Genus Calliotropis Seguenza, 1903 
Type species: Trochus ottoi Philippi, 1844 (by o.d.) - 
Pliocene-Pleistocene, Italy. 
Calliotropis oros marquisensis Vilvens, 2007 
Figs 1-6 
Calliotropis oros marquisensis Vilvens, 2007: 52, 
223, figs 124-129. Type locality: Marquesas Islands, 
Hiva Oa Island, 500-525 m. 
Material examined. French Polynesia, Société 
Islands. TARASOC: stn DW3418, 16°33'S, 
151°48’W, 580-618 m, I juv dd. - Stn CP3436, 
16°43'S, 151°26'W, 430 m, 13 lv, 2 dd sub. - Stn 
CP3437, 16°41'S, 151°26'W, 440-560 m, 1 dd. - Stn 
CP3438, 16°41'S, 151°26'W, 638-700 m, 16 dd, 2 dd 
sub, 6 dd juv. - Stn CP3440, 16°40’S, 151°25'W, 
650-800 m, 1 dd. - Stn DW3442, 16°41'S, 151°26'W, 
515-550 m, 12 dd. - Stn DW3447, 16°42'S, 
151°31'W, 620-700 m, 4 dd, 5 dd sub, 3 dd juv. - Stn 
DW3450, 16°40'S, 151°32'W, 705-755 m, 8 dd. - Stn 
DW3457, 16°45'S, 151°24'W, 520-572 m, 5 lv, 2 lv 
sub. - Stn DW3459, 17°28'S, 149°48’W, 485-560 m, 1 
dd. - Stn DW3460, 17°28'S, 149°50'W, 660-680 m’ 1 
dd sub. - Stn DW3461, 17°27'S, 149°49'W, 844- 
877 m, 1 dd. - Stn DW3462, 17°27'S, 149°50'W, 
1000-1145 m, 1 dd juv. - Stn DW3463, 17°34'S, 
149°54'W, 460-505 m, 2 dd. - Stn DW3468, 17°34's' 
149°54'W, 800-870 m, 1 dd. - Stn DW3474, 17°28's’ 
149°50'W, 720 m, 1 dd juv. - Stn DW3478, 17°31'S, 
149°45'W, 678-810 m, 1 lv. - Stn DW3486, 17°48’s' 
149°22’W, 660-920 m, 5 lv. - Stn DW3488, 17°48'S, 
149°22’W, 390-790 m, 6 lv, 4 dd sub. - Stn DW3490 
17°48'S, 149°23'W, 720-1000 m, 2 lv. - Stn DW3494- 
3495, 17°27/28'S, 149°26/27’W, 556-859 m, 1 dd, 1 
dd sub. - Stn DW3497, 17°43'S, 149°14'W, 
365-850 m, 2 dd. - Stn DW3499, 17°41'S, 149°17'w’ 
550-700 m, 3 dd. - Stn DW3506, 17°36’S, 149°38'w’ 
380 m, 1 dd. - Stn without name, 300-900 m, 28 lv, 8 
dd sub, 3 dd juv. 
Distribution. French Polynesia, Marquesas Islands, 
alive in 500-660, shells in 408-1150 m (Vilvens, 
2007); Société Islands, alive in 430-720, shells in 
380-1000 m. 
Calliotropis am/rtos n. sp. 
Colour Figs A1-A2, Figs 7-13, Table 1 
Type material. Holotype (22.4 x 22.7 mm) MNHN 
(24960). Paratypes: 5 MNHN (24961, 24962, 24963, 
24964, 24965), 1 coll. C.Vilvens. 
Type locality. Tuamotu Archipelago, Kaukura, 
TARASOC, stn DW3378, 15°38'S, 146°51’W, 
887-890 m. 
Material examined. French Polynesia, Tuamotu 
Archipelago. TARASOC: stn DW3349, 15°05'S, 
148°03'W, 976-997 m, 1 dd sub. - Stn DW3362, 
17°27'S, 149°50'W, 1000-1145 m, 1 dd sub. - Stn 
DW3374, 15°39'S, 146°54’W, 703-790 m, 1 lv 
(paratype), 1 dd juv. - Stn DW3377, 15°38'S, 
146°53'W, 780-825 m, 2 dd (with paratype), 2 lv sub, 
2 dd juv. - Stn DW3378, 15°38’S, 146°51'W, 
887-890 m, 2 lv (holotype and paratype). - Stn 
DW3379, 15°38'S, 146°51'W, 800 m, 3 lv (with 
paratypes), 1 lv sub. - Stn DW3399, 15°5l'S, 
148°18'W, 1180-1308 m, 1 dd sub. 
French Polynesia, Société Islands. TARASOC: stn 
DW3426, 16°41'S, 151°03'W, 801-874 m, 1 lv 
(paratype). - Stn DW3434, 16°42’S, 151°03'W, 
700-785 m, 1 dd juv. - Stn DW3439, 16°43'S, 
151°25'W, 800 m, 1 ddjuv. - Stn DW3442, 16°41'S, 
151°26'W, 515-550 m, 1 dd juv. - Stn DW3461, 
17°27'S, 149°49'W, 844-877 m, 1 dd. - Stn DW3462, 
17°27'S, 149°50'W, 1000-1145 m, 1 dd. - Stn 
DW3474, 17°28'S, 149°50'W, 720 m, 1 dd. 
Distribution. French Polynesia, Tuamotu 
Archipelago, alive in 790-887 m, shells in 
790-1180 m; Société Islands, alive in 801-874 m, 
shells in 550-1000 m. 
Diagnosis. A rather big white Calliotropis species 
with a moderately elevated, more or less conical spire 
and a rounded periphery, 4 granular spiral cords on 
last whorls; size of beads of cords decreasing in size 
tiom adapical part to abapical part; convex base with 5 
spiral cords; broad umbilicus covered by a deep-set 
septum. 
Description. Shell of rather big size for the genus 
(height up to 24.5 mm, width up to 23.8 mm), more or 
less as high as wide, rather thin, conical; spire 
moderately elevated, height 0.9x to 1 ,lx width, 2.5x to 
3.0x aperture height; broad umbilicus. 
Protoconch of about 500-550 pm, of 1 whorl, dôme 
shaped, without terminal varix. 
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