140 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 
tain. It approaches, however, very closely the Passer lines transversis notatus of 
Sloane.* 
Puacusia ? 
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 ap- 
proximating, 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 ter- 
minates 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. 
Cotour.—Not noticed. 
Habitat, San Blas, Coast of Patagonia. 
This species is very nearly allied to the Plagusia Braziliensis of Spix’s work, 
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. 
Famity.—CYCLOPTERID. 
1. Goptesox MARMORATUS. Jen. 
Puate XXVII. Fig. 1. 
G. dorso et lateribus pallidd fuscis, nigro reticulatis et fasciatis: dentibus anterioribus 
majoribus, in maxilla superiore subconicis, in inferiore incisivis : operculo postice 
mucrone obtuso armato: membrand branchiali spind gracili, subduplici, (preter 
radios solitos,) instructd, magnd ex parte celatd, apice exserto: pinnd dorsal 
tredecim-radiata. 
BG. Doi3s= All ©, 14:-velvi5:- P2720 vel:21- 
Lona. unc. 2. lin. 7. 
Form.—Head 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, ex- 
cluding caudal. Gape wide, reaching nearly to beneath the anterior angle of the eye. Teeth 
strong, and somewhat crowded in front; in the upper jaw bluntly conical, or slightly 
curved, but of irregular size, with minuter 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 minuter ones at the sides. Eyes rather more than a diameter apart. Gill-open- 
* Nat. Hist. of Jamaica, Pl. 246, fig. 2. 
+ Pisces Brazil. p. 89, tab. L. 
