FORM.—Oval, but narrow, and much elongated for a _Sole_, the breadth
in the middle being three and a half times in the length. Eyes on
the left side, very small, and closely approximating, equally in
advance, or if any difference, the lower one a little first. Mouth
small, with velutine teeth on the supine side, but apparently none
on the upper: snout a little produced in a point beyond it. The
dorsal and anal unite with the caudal, which terminates in rather a
fine point. No trace of any pectorals above or below. Scales
strongly ciliated, especially above, and both sides of the body
rough.
Length 7 inches.
COLOUR.—Not noticed.
Habitat, San Blas, Coast of Patagonia.
This species is very nearly allied to the _Plagusia Braziliensis_ of
Spix’s work,[44] but it appears to differ in having the eyes one over
the other, or the lower one perhaps a little in advance, instead of the
upper one a little before the lower.