Page 31 - NAUTILUS_122-1_Garilli

V. Garilli, 2008
vania lactea could represent a slight exception, having a
quite characteristic, easily distinguishable protoconch I
with a coarser sculpture than that shown by the other
studied species. A. tenera shows a similar protoconch II
sculptural pattern, with few to abundant very small gran-
ules spirally arranged, which may form very discontinu-
ous and irregular ridges. Likewise this kind of sculpture
is shared by other rissoids (e.g. A. tarsodes (Watson,
1886) (see Bouchet and Warén, 1993, fig. 1450) and
Crisilla semistriata). The sculpture of the paucispiral
protoconch of A. cingulata, which is almost a replica of
protoconch I of the first group discussed above, repre-
sents a quite common pattern shown by several non-
planktotrophic rissoids: e.g. A. argillensis Lozouet, 1998, Glaubrecht (ZMB, Berlin), who very kindly lent precious
A. macandrewi (Manzoni, 1868), Lironoba multilirata
(T. Woods, 1878), Onoba gianninii (Nordsieck, 1974)
and, with a moderate similarity, by A. subsoluta (Aradas,
1847), Onoba semicostata (Montagu, 1803), and A. viro-
dunensis Lozouet, 1998 (see Ponder, 1985, fis 89A, 109E
and 126C; Bouchet and Warén, 1993, figs. 1458, 1525;
Lozouet, 1998, figs. 10F and 10K).
There is similarity between the West African rissoid
assemblages, including the Macaronesian province, and
the European ones, with particular regard to those from
the Mediterranean Neogene. This similarity is perhaps
more marked than it has been indicated by Gofas (1999).
The case of G. tiberiana is a further (see Monegatti and
Raffi, 2001, and Garilli and Galletti, 2007) interesting
case of a molluscan species that lived in the Mediterra-
nean Neogene and today occurrs along the West African
coasts. In this view, it is noteworthy to remark that, as a nuzzi-Savelli (Palermo) and R. G. Moolenbeek helped
whole, most of the species here included in Galeodinop-
sis lived in the European Oligo-Pliocene while its living
representings occurs along the West Africa and Macaro-
nesian Provinces. In addition, A. tenera, living in the
Mediterranean, Atlantic Morocco, and in the Canary Is-
lands (Tenerife), should be regarded as a new record,
further supporting the discussed similarity. The rissoid
Rissoina d’Orbigny, 1840, species from the Mediterra-
nean Plio-Pleistocene (see the good illustrations of
Greco, 1974, figs. 11, 13, 15, 17 and Chirli, 2006, pl. 23, ville, Florida) and P. Lozouet (MNHN, Paris) who re-
figs. 7–12), usually cited as R. decussata (Montagu,
1803), is very likely the same taxon as living along the W
African coasts, São Tomé and Cape Verde Islands [see
Gofas, 1999: 97, figs. 69–73, and treated as R. punc-
tostriata (Talavera, 1975)].
The rather common presence of varices on the last
whorl (a rare character in rissoids) of A. carinata, A.
francescoi new species, A. lactea, A. rosariae new spe-
cies, and G. tiberiana should not be regarded as a salient
taxonomic character at the supraspecific level, being
present in quite unrelated species (e.g. A. carinata and
G. tiberiana).
ACKNOWLEDGMENTS
This article would not have been possible without the
generous support of friends, private collectors, and re-
Page 49
searchers. I particularly thank Maurizio Forli (Prato),
Stefano Palazzi (Modena), Nino Adorna Sbrana (Gros-
seto), Stefano Rufini (Anguillara) for lending a large
amount of precious and indispensable material. Many
other people kindly made their collections available.
R.G. Moolenbeek (ZMA, Amsterdam) donated three
shells of Manzonia crispa from ZMA Moll. collection.
Rossana Messina (Palermo) provided a special support,
measuring most of the investigated shells and assisted me
during the bibliographical research in the DGUP library.
Luca Galletti (Monreale), a companion for all the field-
works in Kyllini and Cartiera Mulino, also help me in
providing SEM images. My special thanks to M.
material (with particular regard to the two Alvania cin-
gulata shells from Monterosato collection), to D. Merle,
J. M. Pacaud (MNHN-DHT, Paris), V. Héros, and P.
Lozouet (MNHN-DSE, Paris), who provided helpful
and kind assistance during my visits in MNHN. A. Rosso
and I. Di Geronimo (DSTC, Catania) kindly allowed the
visit to the malacological collections of the DSTC. Kathie
Way (British Museum of Natural History, London), H. J.
Niederhöfer (Staatliches Museum fur Naturkunde,
Stuttgart) and P. Serventi (MPOB, Modena) provided
information on type material. Thanks to M. Fiore, P.
Iacopelli, V. P. Li Vigni (MSNCS, Terrasini), who al-
lowed the visit to the conchological collections of the
MSNCS. C. D’Arpa (MGUP, Palermo) lent some fossil
material housed in the MGUP. Even when the library
was moving, G. Barranca (DGUP, Palermo) very kindly
allowed me the access to some papers. Riccardo Gian-
me in some bibliographic researches. R. G. Moolenbeek
and S. Palazzi also provided very useful and constructive
comments on an early manuscript.
I am grateful to D. Merle, R. G. Moolenbeek, H.
Scholz (ZMB) and E. Theodorou-Vardala (GNHM, Ki-
fissia), who quickly provided the catalog numbers for
type material of A. francescoi new species and A. rosariae
new species. I am also grateful to H. G. Lee (Jackson-
viewed the manuscript and provided valuable comments.
H. G. Lee also kindly helped improve my shaky English.
This work also benefited from critical readings by S. Go-
fas (Departamento de Biologia Animal, Universidad de
Málaga) and José H. Leal (The Bailey-Matthews Shell
Museum, Sanibel, Florida).
LITERATURE CITED
Aartsen, J. J. Van. 1982a. Synoptic Tables of Medit. & Europ.
Conchology. Gen. Alvania (Subg. Alvinia & Galeodina).
La Conchiglia 14 (162–163): 8–9.
Aartsen, J. J. Van.1982b. Synoptic Tables of Medit. & Europ.
Conchology. Genus Alvania (Sbg. Arsenia & Alvaniella).
La Conchiglia 14 (164–165): 4–6.
Aartsen, J. J. Van, H. P. M. G. Menkhorst, and E. Gittenberger.
1984. The marine Mollusca of the Bay of Algeciras, Spain,
with general notes on Mitrella, Marginellidae and Tur-
ridae. Basteria Supplement 2: 1–135.