Cardium (Parvicardium) exiguum var. paludosum Bellini, 1903a: 23

Fasulo, Giuseppe, Duraccio, Sergio, Federico, Antonio & Crocetta, Fabio, 2019, The (almost) unknown Italian naturalist Raffaello Bellini (1874 - 1930): biography malacological publications, and status of his recent molluscan taxa, Zootaxa 4668 (3), pp. 343-369 : 356

Cardium (Parvicardium) exiguum var. paludosum Bellini, 1903a: 23 , 26, figs. 7a–b

( Fig. 4I : right)

Type locality: Fusaro Lake (Bacoli, Tyrrhenian Sea, Italy) .

Original description: “notevole per la sua larghezza dovuta all’eccessivo sviluppo del diametro antero-posteriore” [notable for its width due to a massive development of the antero-posterior diameter].

Remarks: having been instituted as race connected to a specific habitat, we rank it subspecific, and thus available ( ICZN 2012: Art. 10, glossary). This seems to be in disagreement with Hyllelberg (2004), who did not explicitly declare it infrasubspecific, but stated that “no evidence of subspecific status” occurs. Hyllelberg (2004) also listed Cardium exiguum var. paludosum Bellini, 1903 as a variety of Parvicardium exiguum ( Gmelin, 1791) . Taking into account the figure attached to its description ( Fig. 4F ), as well as its peculiar shape, it constitutes a misidentification of a juvenile of Cerastoderma glaucum (Bruguière, 1789) . On the other hand, it is also a primary homonym of Cardium edule var. paludosa Bucquoy, Dautzenberg & Dollfus, 1892 from Corse, also instituted on C. glaucum , and thus permanently invalid ( ICZN 2012: Art. 57). Cerastoderma glaucum was found again during samplings held in the area in 1978–1979 ( Russo & Ferro 1980; Ferro & Russo 1982) and 1975–2018 (authors’ unpublished data), and it constitutes one of the commonest taxa in the area.

Figures

FIGURE 4. A–C. Bittium iadertinum var. coralligena. A. Original figures. B. Possible type material from Capri Island (Naples)—4.9×1.5 mm. C. Original label handwritten by Bellini. MCZR—not numbered. D, E. Murex trunculus var. propeconglobata. D. Fossil(?) shell from Sciacca (Agrigento)—72.4×52.8 mm. E. Original label handwritten by Monterosato. MCZR- M-7623. F, G. Fusus (Pseudofusus) pulchellus var. curta. F. Original figures. G. Shells from Capri Island (Naples) and original label handwritten by Monterosato (up to 16 mm in total height). MCCIC—drawer 8, n. 146. H. Clathromangilia granum var. prausi. Original figures. I. Left. Cardium (Parvicardium) exiguum var. minimum. Original figure. I. Right. Cardium (Parvicardium) exiguum var. paludosum. Original figures.