Chauvetia candidissima, , Scalaria

Appolloni, Massimo, Smriglio, Carlo, Amati, Bruno, Lugliè, Lorenzo, Nofroni, Italo, Tringali, Lionello P., Mariottini, Paolo & Oliverio, Marco, 2018, Catalogue of the primary types of marine molluscan taxa described by Tommaso Allery Di Maria, Marquis of Monterosato, deposited in the Museo Civico di Zoologia, Roma, Zootaxa 4477 (1), pp. 1-138 : 36

candidissima, Scalaria [ Epitonium candidissimum (Monterosato, 1877) ] ( Figures 10I, J )

1877a: 37, pl. II, fig. 5 [XV: 307, 321, fig. 5]—available name

Type material. MCZR –M–30007 —2 sh Algiers, figured in Giannuzzi–Savelli et al. (1999: 66, 67 figs 147, 148) and listed by Settepassi et al. (1976: 18, n. 0436)

Type locality. Described from Algiers ( Algeria).

Remarks. Recorded by MolluscaBase (2018) as Epitonium candidissimum (Monterosato, 1877) .

commutata, Scalaria [ Gyroscala commutata (Monterosato, 1877) ] taxon inquirendum ( Figures 10K, L )

1877d: 420 [XIII: 356]—available name

Type material. MCZR–M–23554— 2 sh “ S. commutata, Monts Ann. Museo Civ. Genova 1876 —77 p. 14 = S. pseudoscalaris , auct. (non Brocc.) Palermo e Catania!”

MCZR –M–23529 —10 sh “ Sc. commutata albida Alger coll ( Joly )”

MCZR –M–23556 —7 sh “ Sc. commutata var. albina . M. Oran ( Alg )”

Type locality. Civitavecchia ( Italy) and Mediterranean.

Remarks. Name proposed to distinguish Scalaria pseudoscalaris Brocchi, 1814 sensu Auctores , considered as a distinct species by Monterosato based on the lack of spines at the axials. The alleged synonymy with Scalaria lamellosa Lamarck, 1814 (from Western Atlantic) was initially considered as possible by Monterosato’s (1877d: 420) but subsequently (Monterosato, 1878c: 26) rejected. Some Authors have considered the introduction by Monterosato as a replacement name for Scalaria lamellosa Lamarck, 1822 [not Turbo lamellosum Brocchi, 1814 — now Cirsostrema lamellosum ( Brocchi, 1814) ]. Landau et al. (2006: 18) debated the issue of the name to use for the species, deciding for Epitonium commutatum (Monterosato) [now Gyroscala commutata ]. Considering other cases of species from the two sides of the Atlantic almost indistinguishable morphologically (see e.g. Bulla striata Bruguière, 1792 v. B. occidentalis A. Adams, 1850 : Malaquias & Reid, 2008) we take a conservative position in regarding the introduction by Monterosato (1877d: 420) as a new species. In case the two entities (Eastern v. Western Atlantic) are considered as conspecific, then the name for both should be Gyroscala commutata (Monterosato, 1877) ; in case they are proved (for instance by genetics) as distinct, then G. commutata should be restricted to the Eastern Atlantic species. Recorded by MolluscaBase (2018) as a synonym of Gyroscala lamellosa (Lamarck, 1822) , we suggest reverting to Gyroscala commutata (Monterosato, 1877) as taxon inquirendum [new status].

Figures

FIGURE 10. A, B. Turritella britannica Monterosato, 1890, England, H. 59.8 mm, with original labels (MCZR–M–21397); C, D. Turritella decipiens Monterosato, coasts of Barberia (Tunisia), H. 17.4 mm, with original label (MCZR–M–21434); E, F. Turritella mediterranea Monterosato, 1890, Palermo (Sicily), H. 51.1 mm, with original label (MCZR–M–21361); G, H. Turritella turbona Monterosato, 1877, Civitavecchia (Italy), H. 39.2 mm, (ex Donati coll.) with original label (MCZR–M– 21406); I, J. Scalaria candidissima Monterosato, 1877, Algiers (Algeria), H. 9.98 mm, and H. 5.2 mm, no label (MCZR–M– 30007); K, L. Scalaria commutata Monterosato, 1877, Palermo (Sicily), H. 14.3 mm, with original labels (MCZR–M–23554); M, N. Hyaloscala finitima Monterosato, 1890, Gulf of Napoli (Italy), H. 3.8 mm, (ex Acton coll.) with original labels (MCZR– M–23502); O, P. Scalaria hispidula Monterosato, 1874, Palermo (Sicily), H. 3.05 mm, with original labels (MCZR–M– 23621); Q, R. Scalaria jolyi Monterosato, 1878, Algiers (Algeria) H. 13.1 mm, (ex Joly coll.) with original labels (recto-verso) (MCZR–M–23494); S, T. Linctoscala lacerata Monterosato, 1890, fossil of Ficarazzi (Sicily), H. 19.5 mm with original labels (MCZR–M–23441); U, V. Linctoscala lincta Monterosato, 1890, paralectotype, Palermo (Sicily), H. 4.9 mm (ex De Boury coll.), with original label (MCZR–M–23500).