ZOOLOGY. 
26 
25. TIGOMA LINEATA, Grd. 
Gen. Rep. 292. 
Spec. Char. —Body elongated, sub-fusiform. Head forming a little less than the fourth of the total length. Snout sub- 
conical; gape of the mouth somewhat oblique; lower jaw slightly overlapped by the snout. Posterior extremity of maxillar 
bone extending to a vertical line drawn at the anterior rim of the orbit. Eye moderate, sub-circular; its diameter entering 
nearly five times in the length of the side of the head. Anterior margin of dorsal fin somewhat nearer the extremity of the 
snout than the tip of the upper lobe of the caudal. Origin of ventrals nearer the extremity of the snout than the fork of the 
caudal. Scales small. Bluish brown streaks above; uniform yellowish beneath. 
229. Mr. Kreuzfeld. 
26. TIGOMA GRACILIS, Grd. 
Gen. Rep. 293. 
Spec. Char. —Body elongated, sub-fusiform in profile. Head contained about four times and a half in the total length. 
Snout sub-conical, rather abbreviated; gape of mouth somewhat oblique; posterior extremity of the maxillary extending to a 
vertical line drawn immediately in front of the orbit. Eye moderate, sub-circular; its diameter entering five times in the length 
of the side of the head. Anterior margin of dorsal fin nearer the extremity of the snout than the tip of the upper lobe of the 
caudal. Origin of ventrals nearer the fork of the caudal than the extremity of the snout. Scales small. Bluish grey above; 
yellowish beneath. 
230. Mr. Kreuzfeld. 
27. SIBOMA ATRARIA, Grd. 
Gen. Rep. 297. 
Spec. Char.— Body somewhat elongated, sub-fusiform in profile. Peduncle of the tail rather stout; head constituting a little 
less than the fourth of the total length: its profile gently sloping forwards, the snout being sub-conical. Mouth small; 
posterior extremity of the maxillary extending to a vertical line drawn immediately behind the nostrils. Eye small and sub- 
circular; its diameter entering five times and a half in the length of the side of the head. Anterior margin of dorsal fin nearer 
the insertion of the caudal than the extremity of the snout. Blackish or brownish black above; greyish w’hite beneath. 
236. Utah district, near the Desert. Mr. Kreuzfeld. 
28. PTYCHOCHEILUS YORAX, Grd. 
Gen. Rep. 301. 
Spec. Char. —Body of moderate length, rather deep upon its middle, and very much tapering posteriorly. Peduncle of the 
tail very slender. Head small, contained nearly five times in the total length. Posterior extremity of maxillar bone extending 
to a vertical line drawn across the anterior rim of the orbit. Eye moderate ; its diameter entering about six times and a half 
in the length of the side of the head. Anterior margin of dorsal fin somewhat nearer the insertion of the caudal than the 
extremity of the snout. Bluish grey above; whitish beneath. 
202. Mr. Kreuzfeld. 
29. SALAR VIRGINALIS, Grd. 
Gen. Rep. 320.—Plate LXXIII, Figs. 1—4. 
Spec. Char. —Body sub-fusiform in profile, otherwise compressed ; head comprised about four times in the total length, the 
caudal fin excluded; jaws sub-equal; posterior extremity of maxillary extending to a vertical line intersecting the posterior rim 
of the orbit. Anterior margin of dorsal nearer the extremity of the snout than the insertion of the caudal fin. Greyish brown 
above, with a purplish reflection and sub-circular black spots; beneath olivaceous, unicolor. 
593. Utah Creek. Mr. Kreuzfeld. 
