. Bulletin of the British Museum (Natural History). Zoology . CLUPEOID FISHES OF THE GUI ANAS 69. Fig. 20. Pellona flavipinnis, opercular series, to show bony groove (a) and ridge (b) on operculum in specimen 248 mm surface of head with two principal ridges diverging posteriorly, each flanked by a small ridge which joins the principal ridge at the hind end of the skull; sometimes a minor ridge below the latter junction. Crest of supra-occipital rising to form a dis- tinct knob. Posterior tips of frontals failing to reach supra-occipital, leaving a pair of semicircular or tria
. Bulletin of the British Museum (Natural History). Zoology . CLUPEOID FISHES OF THE GUI ANAS 69. Fig. 20. Pellona flavipinnis, opercular series, to show bony groove (a) and ridge (b) on operculum in specimen 248 mm surface of head with two principal ridges diverging posteriorly, each flanked by a small ridge which joins the principal ridge at the hind end of the skull; sometimes a minor ridge below the latter junction. Crest of supra-occipital rising to form a dis- tinct knob. Posterior tips of frontals failing to reach supra-occipital, leaving a pair of semicircular or triangular fontanelles narrowly divided in the midline by the anterior extension of the supra-occipital (fontanelles retained but smaller in the largest specimens). Posterior border of gill opening fairly evenly rounded but with well-developed cleithral lobe, silver. Isthmus white (? silver in life), with posterior third bearing. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
Size: 1430px × 1747px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishmuseumnaturalhistory, bookcentury1900, bookcoll
