C. VlLVENS 
Seguenzioidea and Trochoidea from French Polynesia 
Agathodonta sp. 
Figs 28-30 
Cantharidus marmoreus (Pease, 1868) 
Figs 31-32 
Material examined. French Polynesia, Société 
Islands. TARASOC: stn DW3499, 17°41 ’S, 
149° 1 T W, 550-700 m, 1 dd. 
Comments. This single specimen is so broken and 
and the whorls are so eroded that it is very difficult to 
give reliable a possible description and comparison 
with known species. 
Superfamily TROCHOIDEA Rafinesque, 1815 
Family TROCHIDAE Rafinesque, 1815 
Subfamily TROCHINAE Rafinesque, 1815 
Genus :Trochus Linnaeus, 1758 
Type species: Trochus maculatus Linnaeus, 1758 (by 
o. d.) - Recent, Indo-Pacific. 
Trochus niloticus Linnaeus, 1767 
Trochus marmoreus Pease, 1868: 287, pl.24 fig. 9. 
Type locality: Tuamotu Archipelago, Paumotus. 
Cantharidus marmoreus - Cemohorsky, 1980: 113, 
figs 1-3. 
Calliostoma marmoreum — Kaicher, 1979: card#2102. 
Material examined. French Polynesia, Australes 
Archipelago. BENTHAUS: stn DW 1884, 27°54'S, 
143°33'W, 570-620 m, 1 dd sub. - Stn DW 1885, 
27°52'S, 143°33'W, 700-800 m, 1 dd. - Stn DW1926, 
24°38'S, 146 o 0EW, 50-90 m, 3 dd. - Stn DW1932, 
24°41’S, 146°02'W, 500-800 m, 2 dd. - Stn DW 1933, 
24°4ES, 146°0rW, 500-850 m, 3 dd. - Stn DW 1936, 
24°40'S, 145°57'W, 80-100 m, 1 dd. 
Distribution. French Polynesia, Tuamotu 
Archipelago, intertidal (dead) (Letoumeux et al., p.c.); 
Australes Archipelago, 90-700 m (dead). 
Trochus niloticus Linnaeus, 1767: 1227, no. 579. 
Type locality : Indian Océan. 
Trochus niloticus - Cemohorsky, 1972: pp 38-39 
pl-8, fig 1 
Trochus niloticus - Salvat & Rives, 1975: 256, 
Trochus niloticus - Kaicher, 1979: card#2175. 
Trochus niloticus - Poppe, Tagaro & Dekker, 2006: 
80-81, figs 70-71, pi. 33, figs 4-8. 
Material examined. French Polynesia, Australes 
Archipelago. BENTHAUS: stn DW1913, 27°02'S, 
146°00'W, 120 m, 1 dd juv. - Stn DW1917, 27°03'S, 
146°04'W, 50-60 m, 4 dd juv. - Stn DW2015* 
22°38'S, 152°50'W, 250-280 m, 2 dd juv. 
Distribution. Indo-Pacific, low subtidal; French 
Polynesia, Australes Archipelago, 60-250 m (dead 
juv). 
Subfamily CANTHARIDINAE Gray, 1857 
Preliminary comment. The discrimination between 
the various généra belonging to Cantharidinae {sensu 
Hickman & Mc Lean, 1990) is not very clear, 
especially using only conchological features (e.g. 
shape of the whorls, round aperture or with a vertical 
columella, angle between inner and outer lip, tooth on 
the columella or not, base with a gentle or a steep 
slope, umbilicus présent or absent). The new species 
described here are placed into one of the existing 
généra, although some features don't fit exactly with 
the features of the chosen genus, because it seems 
useless to add to confusion by creating new généra. 
Genus Cantharidus Montfort, 1810 
Type species: Trochus iris Gmelin, 1791 (by o.d.) = 
[ lmax opalus Martyn, 1784 (by s.d., 1847) - Recent 
New Zealand. 
Cantharidus sp. 
Figs 43-44 
Material examined. Australes Archipelago. 
BENTHAUS: stn DW 1939, 23°50'S, 147°42'W, 
100 m, 1 dd. 
Comments. This single specimen (7.3 x 5.6 mm) is 
highly eroded and lias a broken protoconch : it is very 
difficult to describe accurately the spiral cords 
ontogeny. 
Genus Jujubinus Monterosato, 1884 
Type species: Trochus matoni Payraudeau, 1826 = 
Trochus exasperatus Pennant, 1777 (by s.d. Pilsbry, 
1889)] - Recent, north -eastern Atlantic. 
J ujubinus geographicus 
Poppe, Tagaro & Dekker, 2006 
Figs 39-42 
Jujubinus geographicus Poppe, Tagaro & Dekker, 
2006: 88-89, pl. 38, figs 2. Type locality : Philippines, 
Balicasag Is., 80-150 m. 
Archipelago. BENTHAUS: stn DW 1880, 27°55'S, 
143°30'W, 90-94 m, 3 dd, 1 dd sub. - Stn DW 1927, 
]46 ° 02 ' W ' 95-105 m, I dd. - Stn DW1932, 
ôUio’ ,46 ° 02 ’ W ’ 500-800 m, I dd. - Stn DW 1958, 
| 49°30'W, 80-150 m, I dd sub. - Stn 
DW2013, 22°39'S, 152°50'W, 80-93 m, 1 dd 
?nn t 7 ib r ti0n ' Phili PP' nes > 80-150 m (Poppe et al., 
^006); French Polynesia, Australes Archipelago, 93- 
m (dead); French Polynesia, Tuamotu 
Archipelago, 0-100 m (dead) (Letoumeux et al., p.c.); 
French Polynesia, Société Islands, 0-85 m (dead) 
(Letoumeux et al., p.c.). 
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