Chiton albus Linnaeus, 1767

Sellanes, Enrico Schwabe Javier, 2010, Revision of Chilean bathyal chitons (Mollusca: Polyplacophora) associated with cold-seeps, including description of a new species of Leptochiton (Leptochitonidae), Organisms Diversity & Evolution (New York, N. Y.) 10 (1), pp. 31-55 : 41

Type species Chiton albus Linnaeus, 1767 , by subsequent designation of Winckworth (1926).

Distribution Worldwide in subtropical and tropical regions, in deep water only; Pliocene–Recent.

Stenosemus exaratus (G. O. Sars, 1878)

( Figs. 7F , 10 , 11 )

Lophyrus exaratus G. O. Sars 1878 — Sars (1878: 113– 114; pl. 8, figs. 1a–k; pl. II, fig. 1).

Lepidopleurus dallii Haddon, 1886 — Haddon (1886: 19, pl. 1. fig. 6, pl. 3, fig. 6a–i); Kaas and Van Belle (1990): synonymization.

Lepidopleurus (Leptochiton) nicomedes Dall, 1919 — Dall (1919: 501–502); Kaas (1979): synonymization.

Figures

Fig. 7 Lepidopleurid, callochi- tonid and ischnochitonid deep- water Polyplacophora from Chile. (A, B) Leptochiton med- inae, lectotype: dorsal (A) and ventral (B) views of (top to bottom) head, intermediate and tail valves. (C, D) Callochiton puniceus, complete specimens: (C) ZSM Mol 20070685, right lateral view; (D) holotype, dorsal view. (E) Chiton illumi- natus, holotype; dorsal view of complete specimen. (F) Steno- semus exaratus, ZSM Mol 20070755; left lateral view of complete specimen. (G) Lepido- zona balaenophila, holotype; dorsal view of complete speci- men. Scale bars: A, B=1 mm; C–G =5 mm. (A, B, D) courtesy of D. Urteaga, (E) by R. Portela Miguez

Fig. 10 Scanning electron micrographs of Stenosemus exaratus, ZSM Mol 20041045. (A) Dorsal view of head valve. (B) Dorsal view of second valve. (C) Dorsal view of tail valve. (D) Left lateral view of tail valve. (E) Isolated scale from perinotum. (F) Hypono- tum. Scale bars: A–D=1 mm; E, F=50 µm

Fig. 11 Scanning electron micrographs of Stenosemus exaratus, ZSM Mol 20041045. (A) Dorso-marginal view of perinotum. (B) Anterior portion of radula. Scale bars: 100 µm