four lateralmost scutes covering the carapace on both sides, between the vertebral and marginal scutes. These scutes are also called "laterals" (Carr, 1952) or "costals" (Boulenger, 1889; Loveridge and Williams, 1957; Pritchard, 1979); see Scutes topic in Introduction.

Alternative forms for pleural scutes : pleural, pleural scute, pleurals.