Page 15 - NAUTILUS_122-1_Garilli

V. Garilli, 2008 Page 33

Figures 53–61. Alvania lactea (Michaud, 1830), protoconch and teleoconch sculpture and microsculpture. 53–54. Profile and
dorsal views of protoconch from the same shell as Figure 44, Italy, Tuscany, Siena, Poggibonsi, Villa Pietrafitta, podere Melograni,
lower Pliocene, coll. MF ex coll. PAL (F55E). 52. Protoconch illustrating variation of the abapical spiral ridges, Italy, Tuscany, Siena,
Poggibonsi, Villa Pietrafitta, podere Sant’Uliviere, lower Pliocene, coll. MF ex coll. PAL (F55C). 56–57. Sculpture of protoconch I
(56) and early teleoconch whorls (57) of the same shell as figures 44 and 53–54. 58–61. Early (58) and very early (59) teleoconch
sculpture, and microsculpture of first (60) and last whorls (61), from the same shell as Figure 42, Monastir-Khenis, coll. Garilli. Scale
bars: 200 ␮m in figures 57–58 and; 100 ␮m in figures 53–55, 58, 61; 50 ␮m in Figure 60; 20 ␮m in Figure 56. Black and white arrows
indicate the protoconch I/protoconch II and protoconch/teleoconch boundaries, respectively.

thick narrow callus, leaving a very small umbilical chink. calities, all belonging to the French Mediterranean coast:
Very fresh shells show a ferruginous periostracum. Shell “Agde, Cette (Hérault) [now Sète], Callioure, Port-
color white. Vendre (Pyrénées orientales)”. (With this citation I con-
Type Locality: Michaud (1831) cited the following lo- sider the second edition, consulted in the MNHN-DSE

Figures 44–52. Shells of Alvania lactea (Michaud, 1830) and Alvania prusi (Fischer, 1877). 44–49. Alvania lactea. 44. Italy,
Tuscany, Siena, Poggibonsi, Villa Pietrafitta, Podere Melograni, lower Pliocene, coll. MF ex coll. PAL (F55E), cancellated morph.
45. Tunisia, Monastir-Khenis, coll. Garilli, ribbed morh (var. dajerleini Monterosato). 46. Italy, Piemonte, Asti province, Pliocene,
MGUP coll. Doderlein (113B) shell close to the original description by Michaud (1830). 47. Italy, Piemonte, Alessandria, Tortona,
Miocene (Tortonian), MGUP coll. Doderlein (476B). 48. Profile view of the same shell as Figure 41. 49. Juvenile shell, Mediter-
ranean France, Provence, Marseille, La Baule, coll. PAL, (2128BAU-V008C). 50–52. Syntype of Rissoa prusi Fischer, 1877,
Quaternary of Rhodes, MNHN (DHT) coll. D’Orbigny (R07495), apertural (50), profile (51) and dorsal (52) views. Scale bars 1 mm.