. Bonner zoologische Monographien. Zoology. 29 organ. In Rhynchocypris and Lagowskiella, the dorsal margin of the primary lamellae bears a deep notch (); in the outgroups and other genera of the ingroups, the margin does not bear the deep notch (). - TS 3: A deep notch absent [0] or present [1] on the dorsal margin of the primary lamellae in the olfactory organ. 4. Supraorbital sensory canal (). The supraorbital sensory canal runs from the parietal posteriorly to the nasal bone anteriorly. It is interrupted into two portions, though the range of the gap might vary, between
. Bonner zoologische Monographien. Zoology. 29 organ. In Rhynchocypris and Lagowskiella, the dorsal margin of the primary lamellae bears a deep notch (); in the outgroups and other genera of the ingroups, the margin does not bear the deep notch (). - TS 3: A deep notch absent [0] or present [1] on the dorsal margin of the primary lamellae in the olfactory organ. 4. Supraorbital sensory canal (). The supraorbital sensory canal runs from the parietal posteriorly to the nasal bone anteriorly. It is interrupted into two portions, though the range of the gap might vary, between the anterior end of the frontal bone and the po- sterior end of the nasal bone in Phoxinus (). The canal is not interrupted at this re- gion in other members of the ingroups and in the outgroups (). However, the interrupted canal is also found in Cyprinus and Gila of Cyprinidae (Cavender & Coburn 1992). - TS 4: Supraorbital sensory canal not interrupted [0], or interrupted [1] between the anterior end of the frontal bone and the posterior end of the nasal bone. 5. Supratemporal sensory canal (). In the outgroups, in Rhynchocypris and Se- motilus, the left and right portions of the supratemporal sensory canal connect on the pa- rietal (). Therefore, the supratemporal canal is continuous between the left and right portions of the canal. In other members of the ingroup, however, the canal is inter- rupted on the parietal. - TS 5: Left and right supratemporal sensory canals connect [0], or not connect [1] each other on the parietal. 6. Preopercular sensory canal ( A-C). In the outgroups, in Hemitremia, Rhynchocy- pris, Lagowskiella, Margariscus, Eupallasella, and in Semotilus, the preopercular sensory canal extends upward and terminates at or near to the tip of the ascending arm of the preopercle bone (). In Phoxinus and Couesius, the preopercular canal terminates at about the middle of the ascending arm of the bone (). Coburn &a
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