Page 17 - Chitons_Mollusca_DELL_ANGELO_1998

Chitons in Strait of Sicily

grab), 22 plates; st. 93 (Scuso bank, -113m, Materia!: st. 71 (Graham bank, -119 m,
grab), 19 plates; st. 282 (Skerki bank, -113/ grab ), 7 plates; st.88 (Favignana isl., -36 m,
141 m, dredge), 56 plates; st. 283 (Skerki grab), 20 plates; st. 93 (Scuso bank, -113 m,
bank, -107 m, grab), 113 plates; st. 284 grab ), 13 plates; st. 282 (Skerki bank, -113/
(Skerki bank, -97 m, grab ), 5 plates; st. 285 141m, dredge), l plate; st. 288 (Skerki bank,
(Skerki bank, -91 m, grab), 18 plates; st. 288 -300 m, grab ), l pia te; st.291 (Skerki bank,
(Skerki bank, -300 m, grab ), 3 plates; st. 289 -70 m, grab ), 15 plates; st. 292 (Skerki bank,
(Skerki bank, -113m, grab), 2 plates; st. 291 -78 m gr ab), l plate; st. 298 (Skerki bank, -64
(Skerki bank, -70 m, grab), 105 plates; st. m, grab), 5 plates.
292 (Skerki bank, -78 m, grab ): 52 plates; st.
295 (Skerki bank, -101 m, grab ), 46 plates; Remarks: A. fascicularis is an exceedingly
st. 296 (Skerki bank, -38 m, gr ab), 4 spm.; st. variable species and, accordingly, its synony-
297 (Skerki bank, -45 m, gr ab), l spm.; st. my is quite complicate (Kaas, 1985). We ha-
298 (Skerki bank, -64 m, grab ), 4 plates. ve found only loose plates of this common
taxon.
Remarks: this relatively uncommon chi-
ton is the most represented polyplacophoran Ecology: A. fascìcularis is a shallow-water
in CS96 biogenic sediments, with hundreds species normally found beneath stones cove-
of loose plates; two specimens have been red by seaweeds.
found alive on the Skerki bank.
Distribution: the taxon is widely distribu-
Ecology: C. corallinus is normally found ted in the Atlantic ocean, from the English
between 15-100 m and more, generally asso- Channel to the Azores and Canary islands,
ciated to coralligenous habitats.
and throughout the Mediterranean sea.
Distribution: this species is widely distri-
buted in the Mediterranean se a of which i t is Acanthochitona crinita (PENNANT, 1777)
apparently endemie. The Red Sea record of
C. corallinus by Leloup (1960) is to be refer- Selected references:
red to the Indo-Pacific taxon Chiton maldi- 1777 Chiton crinitus Pennant, p. 71, Pl. 36,
vensis (E. A. Smith, 1903). Fig. l, Al
1983 Acanthochitona fascicularis (L.) - Bion-
di et al., p. 94, Fig. 6
Suborder ACANTHOCHITONINA Ber- 1985 Acanthochitona fascicularis (L.) - Gagli-
genhayn 1930 ni, Pl. 16, Fig. l; Pl. 9, Figs. 3-6
Familv ACANTHOCHITONIDAE Pilsbrv 1985a Acanthochitona crinita (Pennant) -
1893 Kaas, p. 588, Figs. 7-50
Subfamily ACANTHOCHITONINAE Pils- 1990 Acanthochitona crinita (Pennant) - Mif-
bry 1893 sud et al., p. 60, Fig. 1
Genus Acanthochitona Gray 1821 1993 Acanthochitona crinita (Pennant )-Gio-
vine and Dell'Angelo, p. 168
Acanthochitona fascicularis (LINNÉ, 1767),
Pl. 3, Figs. 8, 9 Materia!: st. 71 (Graham bank, -119 m,
grab ), l plate; st. 88 (Favignana i si., -36 m,
Selected references: grab ), 4 plates.
1767 Chiton fascicularis Li n né, n. 1106
1982 Acanthochitona communis (Rissa) - Remarks: this species is far less common
Biondi and Di Paco, p. 73, Pl. 2 than A. fascicularis from which it can be ea-
1985 Acanthochitona aenea (Risso)- Gaglini, sily separated by differences in the length of
p l. 17, Figs. 2-3; Pl. l O, Figs. 3-4 ( cum ~n.) the girdle spicules, ellipsoidal outline of in-
1985a Acanthochitona fascicularis (Linné) - termediate plates and shape of the tegmen-
Kaas, p. 585, Figs. 1-6 tum's granules.
1990 Acanthochitona fascicularis (Linné) -
Mifsud et al., p. 60, Fig. 3 Ecology: the species is distributed from
1993 Acanthochitona fascicularis (Linné) - the intertidal zone down to pre-corallige-
Giovine and Dell'Angelo, p. 165 nous and coralligenous habitats.

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