Smithsonian miscellaneous collections . Fig. 75.—Acrocheilus ahitaceus. After Jordan and Evermann. conspicuous and sharp-edged. The structure or form of the lipsand mouth have suggested the generic name (axffo^ sharp, xedo^lip) as well as the vernacular names of the species (chisel-mouth,hard-mouth and square-mouth). It differs, however, by the reduced 320 SMITHSONIAN MISCELLANEOUS COLLECTIONS [vol. 48 number of pharyngeal teeth (4—5) which are hooked and havebroad grinding surfaces. It is a common fish in places in the Lower Columbia River andtributaries, as far up as Spokane and Shoshone Fal
Smithsonian miscellaneous collections . Fig. 75.—Acrocheilus ahitaceus. After Jordan and Evermann. conspicuous and sharp-edged. The structure or form of the lipsand mouth have suggested the generic name (axffo^ sharp, xedo^lip) as well as the vernacular names of the species (chisel-mouth,hard-mouth and square-mouth). It differs, however, by the reduced 320 SMITHSONIAN MISCELLANEOUS COLLECTIONS [vol. 48 number of pharyngeal teeth (4—5) which are hooked and havebroad grinding surfaces. It is a common fish in places in the Lower Columbia River andtributaries, as far up as Spokane and Shoshone Falls. It is oneof the many foot-long fishes. It is only eaten in lieu of better Fig. 76.—OrthodoH uiicrolepidotus. After Goode. A second generic type (Orthodon microlepidotus) has no hornycovering to the jaws, but the lower is sharp-edged and has a knobat its symphysis; in the number of pharyngeal teeth, however, itagrees better with the old world Chondrostomines (6—6 or 6—5) ;the teeth are lancet-like and nearly straight, and to this peculiaritythe generic name refers {ofj6o^, straight, and odoo:^, tooth). Thecolor is dark olivaceous but paler below—dark enough, however, forit to be called, as so many others have been, blackfish in California;of course this is a distinctive name only in its home, but no otherhas been recorded. It ranges generally between a foot and a foot and a half in lengthand its size secures it a place in the markets. A good many aresent to the market in San Francisco, where they are eaten by theChinese. The third of the so-called Chondrostomine fishes (Lavi)iia exili-caiida) has no horny plates to the jaws and the lower jaw shutswit
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