Marine biological report for the year ended ..and the half year ending .. . y and undifferentiated teeth of theMackerels {Scomhridce). [ 6-i4.] 128 VII.—DESCRIPTION OF THREE NEW SOUTH AFRICAN FISHES. Dentex albus, n. sp. (Witte-visch). Canines moderately strong, 4 in upper jaw, 6 in of body, 2* times in total length ; length of head,3^ times. Snout more than twice diameter of eye, whichis f; interorbital width and 4I- times in length of head;preorbital width a little greater than height, which is i* timesdiameter of eye, scaleless ; 8 series of scales betweenpreorbital and marg
Marine biological report for the year ended ..and the half year ending .. . y and undifferentiated teeth of theMackerels {Scomhridce). [ 6-i4.] 128 VII.—DESCRIPTION OF THREE NEW SOUTH AFRICAN FISHES. Dentex albus, n. sp. (Witte-visch). Canines moderately strong, 4 in upper jaw, 6 in of body, 2* times in total length ; length of head,3^ times. Snout more than twice diameter of eye, whichis f; interorbital width and 4I- times in length of head;preorbital width a little greater than height, which is i* timesdiameter of eye, scaleless ; 8 series of scales betweenpreorbital and margin of preoperculum ; some small irregularscales on preoperculum, the outer margin of which is scaleless ;angle rounded, vertical limb, about twice as long as the hori-zontal ; interorbital space boldly convex, protruding ; maxil-lary reaches to vertical of anterior third of eye and almostentirely concealed by preorbital ; opercle with a blunt incon-spicuous spine. Upper profile of head strongh^ convex, form-ing a quadrant of a circle from origin of dorsal fin to Dciifcx alhiis, II. sp. Dorsal xii 10, spines weak and flexible ; first 2 spines veryshort, 3rd and 4th about equal and f length of head, thesucceeding spines gradually shortening, the last being shghtlylower than the soft rays. Pectoral nearly as long as head,reaching to anal rays. Ventrals ^ length of head, notreaching vent. Anal iii 8, 2nd spine a httle stronger butshorter than 3rd. Caudal forked, -^^^ length of head. 129 Scales on body large, each with slightly radiating striae downthe centre ; scales on head and throat below pectorals muchsmaller ; the scales on the head extend to the level of the uppermargin of the eye. Lat. 1. 60, lat. tr. 8/15. Colour (of preserved specimen), silvery ; when fresh caughtit is reddish with pale blue longitudinal streaks, which, however,disappear very quickly ; tip of spinous dorsal and of caudalblackish. The specific name given refers to the local name(Witte-visch); the
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Keywords: ., bookcentury1900, bookdecade1910, bookidmarinebiolog, bookyear1913
