FISHES. 
27 
30. SALAR IRIDEA, Grd. 
Gen. Rep. 321. —Plate LXXIII, Fig, 5 ; and Plate LXXIV. 
Spec. Char. —Body sub-fusiform in profile, otherwise compressed; head well developed, constituting a little less than the 
fourth of the total length. Jaws sub-equal; posterior extremity of maxillary extending to a vertical line drawn somewhat 
beyond the orbit. Anterior margin of dorsal fin equidistant between the extremity of the snout and the insertion of the caudal. 
Reddish brown above, with numerous and small black spots; yellowish white beneath. 
596. Humboldt bay, California. Lt. W. P. Trowbridge. 
31. MELETTA COERULEA, Grd. 
Gen. Rep. 330. Plate LXXY, Figs. 5—7. 
Spec. Char. —Body slender, elongated, sub-fusiform in profile. Head constituting more than the fifth of the total length 
Posterior extremity of maxillar bone extending to a vertical line drawn through the middle of the orbit. Eye large and sub- 
circular; its diameter entering four times and a half in the length of the side of the head. Anterior margin of dorsal fin nearer 
the extremity of the snout than the insertion of the caudal. Base of anal fin entering about ten times in the total length. Inser¬ 
tion of ventrals opposite the posterior third of the base of the dorsal fin. Bluish black above; yellowish or whitish beneath, 
with metallic reflects. Fins unicolor. 
958. Humboldt bay, California. Lt. W. P. Trowbridge. 
32. HYODOX TERGISUS, L e s u .-Moon-eye. 
Gen. Rep. 330. Plate LXXY, Figs. 1 — 4. 
Spec. Char •—Head contained five times and a half in the total length; snout rounded, sub-conical. Posterior extremity of 
maxillar bone extending to a vertical line drawn posteriorly to the pupil. Eye very large, sub-circular; its diameter entering 
about four times in the length of the side of the head. Anterior margin of dorsal fin somewhat nearer the tip of the caudal 
than the occiput. Base of anal fin entering about four times in the total length. Insertion of ventrals nearer the extremity of 
the snout than the terminus of the anal. 
962. St. Louis, Missouri. Dr. Geo. Engelmann. 
