Arca avellana Lamarck, 1819:38

Lam, Katherine, Morton, Brian & Leung, K. F., 2008, Shell-bearing Mollusca (Bivalvia and Gastropoda) from submarine caves in Hong Kong, Journal of Natural History 42 (9 - 12), pp. 927-952 : 932

Arca avellana Lamarck, 1819:38

( Figure 2B )

Description

Shell length up to, 30 mm, quadrate, thick, solid and inflated. A sharp keel extends from the beaks to the postero-ventral corner. Outer surface ornamented by fine radial riblets and concentric threads creating a cancellated appearance. Byssal gape situated a little anterior to centre. Posterior area of the inner surface occasionally brown.

Type locality

‘‘les mers de la Nouvelle Hollande, à l’ ˆle ı S-Pierre S.-François’’ ( St. Francis Island , off Ceduna, South Australia) .

Distribution

Red Sea ( Oliver 1992), Indo-Pacific from southern Hokkaido, Japan ( Matsukuma and Okutani 2000) to Hong Kong ( Dudgeon and Morton 1982; Bernard et al. 1993; Scott 2003). Attached to hard substrata, from the intertidal zone to 20 m and sometimes in dead coral heads ( Dudgeon and Morton 1982).

Figures

Figure 2. A, Acar plicata, height×length57.2×12.9 mm; B, Arca avellana, heigh- t×length512.2×26.1 mm; C, Lithophaga malaccana, height×length517.7×7.87 mm; D, Modiolus comptus, height×length57.05×4.82 mm; E, Septifer bilocularis, heigh- t×length537.8×19.8 mm; F, Dendostrea crenulifera, height×length53.4×2.4 mm; G and H, Hyotissa sinensis (NHM 20030494), height×length5129×117 mm; I, Spondylus cf. anacanthus, height×length58.31×15.07 mm; J, Anomia chinensis, heigh- t×length52.4×2.4 mm; K, Pinctada martensii, height×length514.48×15.35 mm; L, Isognomon legumen, height×length528×14.77 mm; M, Vulsella vulsella, heigh- t×length564.19×32.96 mm; N, Ephippodonta oedipus, height×length50.51×3.25 mm; O, Mysella compacta, height×length51.84×4.5 mm; P, Claudiconcha japonica, heigh- t×length54.75×5.08 mm; Q, Hiatella orientalis, height×length511.9×13.1 mm.