. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 624 Annals of the South African Museum. far from the caudal base as from tip of snout, 1-23 (J.)-l-43 times as far from the hind margin of the mid-caudal rays as from the tip of the snout. First spine 1-7-1-9, base of first dorsal 2-0-2-2 in head. Distance from origin of first to origin of second dorsal 1-0-1-2 (J.) in head. First dorsal inserted above the 9th-12th, second above the 20th-23rd lateral scale. Pointed sheath scale extends behind the origin of the first dorsal 2-6-2-9 (J.) in head, 2-4-2
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 624 Annals of the South African Museum. far from the caudal base as from tip of snout, 1-23 (J.)-l-43 times as far from the hind margin of the mid-caudal rays as from the tip of the snout. First spine 1-7-1-9, base of first dorsal 2-0-2-2 in head. Distance from origin of first to origin of second dorsal 1-0-1-2 (J.) in head. First dorsal inserted above the 9th-12th, second above the 20th-23rd lateral scale. Pointed sheath scale extends behind the origin of the first dorsal 2-6-2-9 (J.) in head, 2-4-2-6 in distance from origin of first to origin of second dorsal and 5-0-6-6 in distance from origin of first dorsal to tip of snout. Second soft ray longer than ventrals, and than distance from hind margin of head to centre of eye, 1-25-1-4 (J.); base of second dorsal 2-6-3 (J.) in head. Last ray. Fig. 12.—Mugil buchanani Blkr. (see note, fig. 3). longer than penultimate; in adults the fin is anteriorly elevated, falcate, edge deeply concave. Second dorsal densely scaled. A III, 9. Inserted opposite origin of second dorsal. Second ray 1-2-1-4 (J.) in head, last ray longer than penultimate; in adults the fin is anteriorly elevated, falcate, edge deeply concave, densely scaled. There is considerable alteration in the shape of the soft dorsal and anal fins with growth. In very young specimens (< 100 mm.) the anterior rays are fairly long, but the fin is not markedly falcate, since the middle rays are relatively longer than in the adult, and the edges of the fins are feebly concave. As the size of the fish increases, the anterior rays become relatively longer and the middle rays shorter, the fin assuming the anteriorly falcate shape when the length of the fish is more than ^120 mm. The scaling of the fins also increases from the very young to this size. In the former the basal scaling only is plain, there being apparently a mere sprinkling of light scales over the distal portio
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
