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Helix mazzulli var. quincayensis — Westerlund 1889: 451.
Helix Costae (H. Mazzulli) — Platania 1890: 45 (Monte Pellegrino; Monte Cuccio); Salvo 1932: 45 (Monte Pellegrino; Monte

Cuccio).
Helix (Erctella) mazzulli — [Incorrect subsequent spelling for mazzullii] Monterosato 1894: 168–169 (Monte Pellegrino; Capo

Gallo).
Helix (Erctella) costae monstr. contraria and monstr. scalariformis Monterosato 1894: 169.
Helix (Erctella) costae var. ex col. unicolor, fasciata, albina Monterosato 1894: 169.
Helix (Erctella) costae var. ex forma: acuta, arietina, intorta Monterosato 1894: 169.
Helix Luparellensis De Gregorio 1895: 192 (fossil: Luparello cave, near Baida; Palermo) — De Gregorio 1899: 4 (fossil:

Luparello cave); Burgio & Costanza 1999: 368 (fossil: Luparello cave).
Helix mazzulli var. lymneopsis De Gregorio 1895: 193 (near Palermo, maybe Monte Pellegrino).
Helix mazzulli var. normalis De Gregorio 1895: 193 (Monte Pellegrino; Guadagna, near Palermo).
Helix mazzulli var. supracristata De Gregorio 1895: 193 (near Palermo).
Helix mazzulli var. zonata — De Gregorio 1895: 193 (Castelvetrano; San Vito; Marsala; Capo Gallo; Pachino).
Helix (Helicogena) mazzullii — Kobelt 1903: 100, pl. 320, figs 5–13.
Helix (Erctella) Mazulli — [Incorrect subsequent spelling for mazzullii] De Gregorio 1927: 5 (fossil: Monte Pellegrino).
Helix Mazzullii var. limneopsis — [Incorrect subsequent spelling for lymneopsis] De Gregorio 1927: 16 (Palermo: Addaura

cave).
Helix Mazzullii F. Luparellensis — De Gregorio 1927: 19 (fossil: Palermo: Luparello cave).
Helix mazullii — [Incorrect subsequent spelling for mazzullii] Kuehnelt 1932: 132 (Monte Pellegrino); Rensch 1932a: 792

(Monte Pellegrino); Rensch 1937: 568 (Monte Pellegrino).
Helix (Cryptomphalus) mazzullii — Zilch 1952: 136; Sacchi 1955a: 83–87, pl. 3, fig. E (Monte Pellegrino; Cefalù; Monte

Gallo; Monte Palmeto; Capo San Vito; Monte Cofano; Custonaci); Alzona 1971: 220 (northwestern Sicily, from Palermo
to Trapani); Cesari 1978: 58 (Monte Pellegrino; Cefalù, La Rocca; Custonaci); Falconieri 1995: 131.
Cryptomphalus mazzullii — Sacchi 1955b: 635-642 (Capo Gallo; Capo San Vito; Custonaci; Cefalù; Isola delle Femmine).
Helix (Cornu) mazzullii — Esu et al. 1986: 235 (fossil: Poggio Schinaldo); Giusti & Castagnolo 1982: 89.
Cantareus mazzullii — Manganelli et al. 1995: 33; Manganelli et al. 2000: 41–42 (from Trapani to Cefalù); Vitturi et al. 2005:
351–357 (Monte Pellegrino); Lo Brano & Sparacio 2006: 584 (Monte Cuccio; Monte Pellegrino; Capo Gallo).
Helix mazzulli mazzulli — [Incorrect subsequent spelling for mazzullii] Cossignani & Cossignani 1995: 142–143 (northwestern
Sicily, Monte Pellegrino).
Cornu mazzullii — Bank 2009 (Sicily); Colomba et al. 2008: 90.
Erctella mazzullii — Liberto et al. 2010: 113.
Helix mazzuli — [Incorrect subsequent spelling for mazzullii] Benoit (date?, see Benoit 1857–1862): pl. 11 fig. 9 (Monte Pel-
legrino).
Helix mazzuli var. zonata — Benoit (date?, see Benoit 1857–1862): pl. 11 fig. 10.

Shell (Figs. 9–14). Globose-conical, light; height 25–36 mm (mean 31.5 mm); maximum diameter 24–33 mm
(mean 27.5 mm); aperture height 17–26 mm (mean 20.7 mm); aperture maximum diameter 18–24 mm (mean 21.8
mm); uniformly yellowish or brownish, sometimes with 3–5 brown spiral bands; external surface with thin, uni-
form, axial wrinkles; aperture very large, round; peristome simple, sharp, little thickened and sometimes a little
reflected. (Rossmässler 1837; Pfeiffer 1848; Benoit 1857; Westerlund 1889; Cesari 1978; Falconieri 1995)

Radula. Similar to that of C. aspersum (Pollonera 1887; Hesse 1919; Giusti et al. 1995) but differs in the less
evident mesocone of the central tooth. (Hesse 1919; Cockerell 1921; Cesari 1978).

Genitalia (Fig. 21). Diverticulum of bursa copulatrix longer (nearly two-fold) than duct of bursa copulatrix;
two digitiform glands each of which is divided into 20–35 slender and branched digit-like appendices; vagina inter-
nally with 5–6 longitudinal pleats; penial flagellum as long as penis and epiphallus together; proximal cavity of dis-
tal penis with some transversal pleats, a very small penial papilla and a small papilla on the internal wall (Hesse
1919; Cesari 1978; Giusti & Castagnolo 1982).

Remarks. Menke (1830) introduced the name H. retirugis as a nomen nudum. Rossmässler’s citation of the
name as a synonym of Helix mazzullii and its adoption as a valid name by Cantraine (1840) and subsequent authors
make the name available and Rossmässler its nomenclatural author (ICZN 1999 Art. 11.6). The type material con-
sists of the specimens “denoted by that name when it was adopted as the name of a taxon” (ICZN 1999 Art. 72.4.3).
This was in 1840 by Cantraine (misspelled as ritirugis) who cited the species as being found “dans les environs de
Palerme” (in the surroundings of Palermo). Until the nominal species has been typified (either with material of
Cantraine or by a neotype) it remains unclear whether the name retirugis denotes the globose genuine mazzullii or
the conical form of Monte Pellegrino.

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