FORM.—Oval, approaching to rhomboidal. Breadth a little exceeding half
the length. Eyes on the right side, near together, equally in
advance, or the lower one perhaps rather more forward than the
upper; between them a double osseous ridge. On the under side of the
head, and nearly answering in position to the upper eye, is a
deepish cavity, from whence proceeds a tentaculiform appendage four
or five lines in length. Teeth very small, sharp, in scarcely more
than two rows, and apparently confined to the under side. Lateral
line sweeping over the pectoral. Dorsal commencing above the upper
lip, and reaching nearly to the caudal, but leaving a minute space.
Both sides of the body are smooth, but the upper one appears to have
lost its scales. Pectoral on the eye side about three-fourths the
length of the head.
Length 5 inches.
COLOUR.—“Above pale purplish brown, with rounded darker markings.”—D.
Habitat, Bahia Blanca, Coast of Patagonia.