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Fig. 9. Horizontal (palatine view, a) and cross (frontal view, b) sections of the head of Channa argus to show the suprabranchial chambers. Note that cartilaginous processes from the parasphenoid (p), hyomandibular (h) and the epibranchial of the 1st gill arch (e) projecting into the chambers (a). The inner margin of the hyomandibular processes (h) abuts to the inner wall of the chambers and thereby divides the cavity when the operculum is adducted (b). The capillary network extends to the palatine region anterior to the chambers and the surface of the tongue. Original photographs.

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