Acanthochitona exquisita (Pilsbry, 1893)

(Figures 3F, 10G–L)

Acanthochites exquisitus Pilsbry, 1893: 44–47 . Chresonymy and synonymy in Watters (1990).

Type material. Lectotype, designated by Watters (1990), ANSP 349332.

Type locality. Bahía Las Ánimas, Baja California (BC), México.

Material examined. Twenty– six specimens, BL 8.3–20.9 mm.

Habitat. On large to medium–sized semi–submerged rocks, mainly on rough surfaces with coralline algae, either filamentous, crusty, green, brown or red.

Remarks. Acanthochitona exquisita has a sculpture of pustules with one aesthete on the center of its base (Figs 10J, K). Intermediate valves with sub–triangular tegmentum and jugal area smooth (Fig. 10H). Major lateral radular tooth tricuspid, minor lateral teeth small and short, very reduced; the central tooth appears as a rectangular long plate (Fig. 10L). This species can reach body lengths between 25 and 34 mm and is considered a large species within the genus.