Page 2 - Micali_Geiger_2015

704 Pasquale Micali & Daniel L. Geiger
• Shoulder: on the teleoconch II, the portion of
the shell between the apical suture and selenizone.
• Slit: the anteriormost portion of the selenizone,
which is open at the apertural margin.
• Teleoconch I: postembryonic shell to the start
of the selenizone.
• Teleoconch II: postembryonic shell from the
start of the selenizone to the apertural margin.
ABBREVIATIONS AND ACRONYMS. DLG:
Daniel L. Geiger collection, Los Angeles, Califor-
nia, U.S.A. DSC: Danilo Scuderi collection, Catania,
Italy. M: Monotypy. OD: original designation.
PMF: Pasquale Micali collection, Fano,
SBMNH: Santa Barbara Museum of Natural
History, Santa Barbara, California, U.S.A.
subsequent designation. USNM: United States
National Museum, Smithsonian Institution, Wash-
ington (DC), U.S.A.
SYSTEMATICS
VETIGASTROPODA Salvini-Plawen, 1980
Vetigastropoda are typically divided into a num-
ber of superfamilies. Geiger (2012) discussed in de-
tail the fundamental disagreement amongst various
phylogenetic studies with respect to family-level re-
lationships, further hampered by highly incomplete
and incongruent taxonomic sampling of major
lineages. With respect to the scissurellids, it seems
clear that Scissurellidae and Anatomidae are not sis-
ter taxa, and Larocheidae and Depressizonidae have
not been included in any formal phylogenetic as-
sessment. Accordingly, the superfamily Scissurel-
loidea is untenable, unless it is restricted
Scissurellidae s.s. only. Using Scissurelloidea (or
any other vetigastropod superfamily) in the narrow
sense does not contain any classification informa-
tion, therefore, is superfluous. Because superfam-
ilies are not mandatory ranks as per ICZN 1999, the
best and most honest representation of our under-
standing is to omit all superfamilies under Veti-
gastropoda at this time.
Family SCISSURELLIDAE Gray, 1847
Scissurella d’Orbigny, 1824.
Type species: Scissurella laevigata d’Orbigny, 1824
(SD: Gray, 1847) (= Scissurella costata d’Orbigny,
1824)
Scissurella azorensis Nolt, 2008
Examined material. France, Corsica SW,
between Pisciucani and Paragan beaches, beach,
41.442°N, 9.115°E (DSC 2). Italy, Reggio di Calab-
ria, Scilla, 50 m, 38.26UN, 15.715°E (DLG 2370,
4; DSC 4). Italy, Reggio di Calabria, Scilla, 50 m,
38.255°N, 15.714°E (DLG 2670, 1). Italy, Sicily,
Trapani, Egadi Islands, Marettimo Island, Secca del
Cammello, 30 m, 37.989°N, 12.065°E (DLG 1812,
3). Italy, Sicily, Trapani, 30 m, 38.024°N, 12.504°E
(DLG 2386, 1). Italy, Sicily, Trapani, San Vito Lo
Capo, Cape San Vito, 2.5 m, 38.185°N, 12.733°E
Italy.
(DLG 2542, 2). Italy, Sicily, Acitrezza, Lachea
island, 5-30 m, 37.56LN, 15.163°E (DSC 11). Italy,
SD: Sicily, Brucoli, 3 m, 37.282°N, 15.188°E (DLG
2547, 5). Italy, Sardinia, Sant'Antioco, 39.066°N,
8.459°E (DLG 2607, 1). Italy, Pelagian Islands,
Linosa (SBMNH 456685, 7; DSC 6). Italy, Linosa,
Punta Calcarella, 35 m, 35.853°N, 12.880 °E (PMF
8). Italy, Pelagian Islands, Lampedusa, Cala Croce,
6 m, 35.499°N, 12.590 °E (DSC 3).
Remarks. The species was described from the
Azores, but was reported by Geiger (2012) also
from a single lot from the Mediterranean sea. Since
then, several additional lots have been found from
Mediterranean sediment samples. Most (8 of 12) of
those samples are from Sicily or the eastern tip of
mainland Italy, while one is from Corsica and
Sardinia to the north and Linosa and Lampedusa
Islands to the south. The species have not been
recovered from any other samples (e.g., Croatia,
Spain, France).
Scissurella azorensis (Figs. 9-12) differs from
S. costata by the more rounded whorls, lacking of
to flat shoulder, the lack of spiral threads on shoulder
and base, teleoconch II of about 0.75 whorls,
compared to 1-1.125 whorls.
Sinezona Finlay, 1926.
Type species: Schismope brevis Hedley, 1904 (OD)
Sinezona semicostata Bumay et Rolan, 1990
Remarks. Sinezona semicostata was described
by Bumay & Rolan (1990) from material collected
at a depth of few meters at Boavista island (Cape
Verde archipelago, eastern Atlantic), but it is also
known from the Canary Islands and Madeira
(Hernandez et al., 2011; Geiger, 2012). The place-