. Bulletin of the British Museum (Natural History) Zoology. . This feature is not found in other 'sector mouth' taxa and is thus identified as an apomorphic character. Scaphiodonichthys possesses a series of autapomorphic characters: it lacks a snout groove; the 1st and 2nd infra- orbitals cover the maxilla and the premaxilla; the adductor mandibulae muscle inserts on the posterior tip of the maxilla and the pre-dorsal neural spines are extended. There are two characters shared by Onychostoma and Scaphiodonichthys, one of which is the reduced 5th infraorbital; the other is the anal fin with 5
. Bulletin of the British Museum (Natural History) Zoology. . This feature is not found in other 'sector mouth' taxa and is thus identified as an apomorphic character. Scaphiodonichthys possesses a series of autapomorphic characters: it lacks a snout groove; the 1st and 2nd infra- orbitals cover the maxilla and the premaxilla; the adductor mandibulae muscle inserts on the posterior tip of the maxilla and the pre-dorsal neural spines are extended. There are two characters shared by Onychostoma and Scaphiodonichthys, one of which is the reduced 5th infraorbital; the other is the anal fin with 5 branched rays. The latter is a plesiomorphic character in cyprinines, but the former is an apomorphic. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Farn, Alexander E. London : Butterworths
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