426 DR. GUNTHER ON THE FISHES OF CENTRAL AMERICA. 
58. UMBRINA NASUS. 
D10|4. A.1/8. L. lat: 54. L. transv. 6/14. 
The height of the body is contained four times in the total length (without caudal), 
the length of the head thrice and one-fourth. Snout much produced beyond the 
mouth, which is quite at the lower side of the snout. ‘The diameter of the eye is two- 
thirds of the length of the snout, and two-fifths of that of the postorbital portion otf 
the head. Symphysial barbel very short, scarcely as long as the posterior nostril. 
Preoperculum distinctly serrated. The second and third dorsal spines are as long as 
the head, without snout. Posterior margin of the caudal fin fshaped, the upper lobe 
being pointed, the lower rounded; anal spine very feeble. ‘The maxillary extends to 
below the centre of the orbit. Silvery, fins blackish. 
One specimen, 10 inches long, was found by Capt. Dow at Panama. 
59. UMBRINA ANALIS. 
D.10|3. A. 2/6. L. lat. 46-48. L. transv. 6/15. 
The height of the body is one-third of the total length (without caudal), the length 
of the head two-sevenths. Snout compressed, rather deep, of moderate extent, longer 
than the eye, which is two-ninths of the length of the head, and equal to the width of 
the interorbital space. Snout overlapping the mouth, but not much protruding beyond 
it. Barbel very short, scarcely as long as the posterior nostril. Preoperculum 
distinctly serrated. The second and third dorsal spines are not quite as long as the 
head without snout. Caudal fin subtruncate. Anal spine very strong, more than half 
as long as the head. ‘The maxillary extends beyond the front margin of the eye. An 
oblique dark streak runs along each series of scales. The spinous dorsal fin blackish. 
One specimen, 11 inches long, was found by Capt. Dow at Panama. 
