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Biodiversity Journal, 2015, 6 (3): 703-708

Additions and corrections to the Scissurellidae and Anatom-

idae (Gastropoda Vetigastropoda) of the Mediterranean Sea,

with first record of Sinezona semicostata Burnay et Rolan, 990
1

Pasquale Micali & Daniel L. Geiger 2
1

'via Papiria 17, 61032 Fano, Pesaro-Urbino, Italy; e-mail: lino.micali@virgilio.it
2
Santa Barbara Museum of Natural History, 2559 Puesta del Sol Road, Santa Barbara, CA 93105-2936 U.S.A.; e-mail:
dgeiger@sbnature2.org

ABSTRACT New information on the scissurellids fauna, Scissurellidae and Anatomidae (Gastropoda

Vetigastropoda), in the Mediterranean Sea is presented. Scissurella azorensis Nolt, 2008, is
confirmed from several localities in the Tyrrhenian Sea. Sinezona semicostata Burnay et
Rolan, 1990, a species until now known from Cape Verde and Canary Islands, is reported
for the first time in the Mediterranean, based on the record of 12 specimens at Linosa island

(Sicily Channel), 35 m. Anatoma crispata (Fleming, 1828) does not occur in the Mediter-
ranean; earlier misidentified records are corrected. Anatoma eximia Seguenza, 1880, appears
to be a cold water guest species at the type locality Gallina, Reggio Calabria.

KEY WORDS Anatoma; Scissurella Sinezona Mediterranean.
; ;
Received 27.07.2015; accepted 21.08.2015; printed 30.09.2015

INTRODUCTION anticipated, some errors need to be corrected, and

some additional data have come to light in the
Scissurellidae and Anatomidae are two families meantime (see also Pimenta & Geiger, in press).

of microscopic marine gastropods of world-wide Here are addressed some novel data for the Mediter-
distribution. They are amongst the smallest gastro- ranean Sea.

pods (0.5-11 mm, modal size ~l-3 mm), and are
distributed in all fully marine oceans from the

intertidal to the abyssal plain. They are members of MATERIAL AND METHODS
the basal Vetigastropoda as evidenced by paired

gills, a rhipidoglossate radula, and usually with a Standard procedures for scanning electron mi-
slit or hole in the shell above the mantle cavity. croscopy (SEM) were employed (see Geiger et al.,

Unlike other Vetigastropoda such as abalone (Hali- 2007; Geiger, 2012).
otidae), top snails (Trochidae Turbinidae), and Some specialized terms are defined following

slit shells (Pleurotomariidae), scissurellids lack a Geiger (2012).
nacreous inner shell layer (see Geiger et al., 2008 • Selenizone: the closed portion of the slit. Has

for review). lateral keel and growth markings (= lunules). The
The groups have been recently revised and mono- onset of the selenizone with growth defines the

graphed by Geiger (2012) on a global scale. As was boundary between teleoconch I and II.