. Bulletin of the British Museum (Natural History). Zoology . CLUPEOID FISHES OF THE GUI ANAS 81. Fig. 26. Chirocentrodon bleekerianns (Poey). From Hildebrand 1964. Description. Based on ten fishes, 78-3-89-5 mm , from off the Orinoco mouth (batches b and d above). 6, D ii (12) 13-14, P i 12 (), 13 (7), V i 5, A hi 35 (), 36 (1), 37 (1), 38 (4), 39 (1), 40 (0), 41 (1), 5-6 + 15 (), 16 (2), scutes 16-17 (19) + 9-11. In percentages of standard length : body depth 23-6-25-3, body width 7-3-8-0, head length 22-7-24-6 ; snout length 7-0-8-0, eye diameter 6-6-7-
. Bulletin of the British Museum (Natural History). Zoology . CLUPEOID FISHES OF THE GUI ANAS 81. Fig. 26. Chirocentrodon bleekerianns (Poey). From Hildebrand 1964. Description. Based on ten fishes, 78-3-89-5 mm , from off the Orinoco mouth (batches b and d above). 6, D ii (12) 13-14, P i 12 (), 13 (7), V i 5, A hi 35 (), 36 (1), 37 (1), 38 (4), 39 (1), 40 (0), 41 (1), 5-6 + 15 (), 16 (2), scutes 16-17 (19) + 9-11. In percentages of standard length : body depth 23-6-25-3, body width 7-3-8-0, head length 22-7-24-6 ; snout length 7-0-8-0, eye diameter 6-6-7-3, upper jaw length 16-9-18-9, lower jaw length 15-7-17-2 ; pectoral fin length 16-7 (all except one damaged), pelvic fin length 4-1-4-3 (all except two damaged), length of anal fin base 34-9-37-5 ; pre-dorsal distance (57-5) 60-2-61-8, pre-pelvic distance 37-8-41-0, pre-anal distance 54-7-58-0. Body compressed, its width 3-0-3-3 times in its depth, the latter about equal to head length ; belly strongly keeled, the scutes beginning just behind isthmus and with short lateral arms until after pectoral base. Eye diameter equal to but usually less than snout length. Maxillae (Figure 27) overlapping distal tips of pre-maxillae and reaching to anterior (exposed) margin of pre-operculum, distal tips round, lower edges bearing 20-30 caniniform teeth of up to one-quarter pupil diameter in length, each tooth interspersed with one to four smaller teeth (half to one-third length of major teeth) ; pre-maxillae with a single series of about 25 small conical teeth, but three to four median teeth greatly enlarged (one-third pupil width) and directed in towards the midline, the pre-maxillae being separated by a deep and toothed cleft (Figure 28) ; hypo-maxillae absent; two supra-maxillae, the 2nd (posterior) with expanded portion tapering to a point posteriorly and with spatulate anterior exten- sion, the 1st (anterior) spatulate, its depth 2-5 times in its length. Lower jaw rising steeply to m
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