tain. It approaches, however, very closely the Passer lineis ti-ansversis notatus of
Sloane.*
P l a g u s ia ?
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 litlle 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.—N ot noticed.
Habitat, San Bias, Coast of Patagonia.
This species is very nearly allied to the Plagusia Braziliensis oí s work.f
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.
F amily.— C Y C L O P T E R ID Æ .
1. G o b i e s o x m a r m o r a tu s . Jen.
P l a t e X X V I I . F ig . 1.
G. dorso et lateribus pallidè fuscis, nigro reticulatis et fasciatis : dentibus anterioribus
majoribus, in maxillá superiore sxibconicis, in inferioi'C incisivis : operculo posticè
mucx'one obtuso armato : membrana branchiali spiná gracili, subduplici, (proeter
radios solitos,) instruetà, magnâ ex parte celatci, apice exserto : pinnâ doi'sali
tredecim-radiatâ.
B. 0 ; D. 13; A. U ; C. 14 vel 15; P . 20 vel 21.
L o n g . u n c . 2. lin . 7.
F orm.—H ead very large, broad and much depressed, with the snout rounded nearly in an exact
semicircle. Body compressed behind, and suddenly tapering behind the pectorals. The
length and breadth of the head are equal, each being one-third of the entire length, excluding
caudal. Gape wide, reaching nearly to beneath the anterior angle of the eye. T eeth
strong, and somewhat crowded in front ; in the upper jaw bluntly conical, or slightly
curved, but o f irregular size, with m inuter ones behind; very small at the sides of the jaw,
and apparently here but in a single row : below, the six middle teeth are incisor-like, and
project forwards; on each side of these are two or three similar to those in front above, then
follow some m inuter ones at the sides. Eyes rather more than a diameter apart. Gill-open-
* Nat. Hist, of Jamaica, PI. 246, fig. 2.
+ Pisces Brazil, p. 89, tab. L.