. Bulletin of the British Museum (Natural History) Zoology. 124 IAN HARRISON & GORDON HOWES 3rd and 4th toothplates bearing strong, downwardly pointing (proximal) teeth (Fig. 5A). Thick epidermal tissue surrounds toothplates and proximal portions of epibranchials, forming "pharyngeal pads' which are widely separated across the midline. Condition similar in both species examined, A. telfairii, A. monticola. JOTURUS Poey, 1860 (Fig. 12B): PBO absent; upper pharyngeal morphology similar to that of Agonostomus but with two loose folds of tissue covering the area between the 2nd and 3rd ph
. Bulletin of the British Museum (Natural History) Zoology. 124 IAN HARRISON & GORDON HOWES 3rd and 4th toothplates bearing strong, downwardly pointing (proximal) teeth (Fig. 5A). Thick epidermal tissue surrounds toothplates and proximal portions of epibranchials, forming "pharyngeal pads' which are widely separated across the midline. Condition similar in both species examined, A. telfairii, A. monticola. JOTURUS Poey, 1860 (Fig. 12B): PBO absent; upper pharyngeal morphology similar to that of Agonostomus but with two loose folds of tissue covering the area between the 2nd and 3rd pharyngobranchials. When the fold covering the anterior border of toothplate 3 is lifted, a rudimentary sulcus is exposed. CESTRAEUS Valenciennes, 1836 (Fig. 12C): PBO rudi- mentary; pharyngeal morphology similar to that of Joturus but lacking folded tissue; although a rudimentary sulcus is present, that of C. oxyrynchus and C. plicatilis (type species) is deeper and more well-defined than that of C. goeldii. ALDRICHETTA Whitley, 1945 (Fig. 12D): PBO morphology intermediate between Cestraeus and more advanced mugilids; sulcus V-shaped, narrow and shallow. Teeth on pharyngo- branchial 2 and medial teeth on 3, of proximal-type, outer teeth and all those on 4th toothplate are of distal-type. Tissue anterior to sulcus highly convoluted and papillose, covering a medial fat body between 2nd and 3rd epibranchials. Pharyngo- branchial pads broadly separated by deep furrow. MYXUS Giinther, 1861 (Fig. 13A): PBO developed; denticu- late area large with broadly convex sulcus border; cushions deeply divided; sulcus wide, diagonal; valve in form of a double papillose pad. Of the included species, M. elongatus (type species) and M. petardi closely resemble one another but M. capensis has a PBO morphology which more closely resembles that of Mugil cephalus (p. 125). SICAMUGIL Fowler, 1939 (Fig. 13B): PBO with shallow denticulate area, sulcus border almost straight; sulcus dia- gonal, wide and sh
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