. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Ceratostethus—Osteology and Structural Novelties • Roberts 407. igure 11. Cerofosfefhus fa/corn/s. Axial skeleton. \ series of about four small distal radials. \n unpaired splint attached to proximal iorsal surface of uppermost pectoral ray. Pectoral rays 10 or 11. Median fins (Fig. 11). First dorsal fin tvith two very short, slender, refractile ipines; second spine even shorter and slen- derer than first, attached to a pterygium :onsisting of a single element. Second iorsal with five segmented rays. First ray imbranc
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Ceratostethus—Osteology and Structural Novelties • Roberts 407. igure 11. Cerofosfefhus fa/corn/s. Axial skeleton. \ series of about four small distal radials. \n unpaired splint attached to proximal iorsal surface of uppermost pectoral ray. Pectoral rays 10 or 11. Median fins (Fig. 11). First dorsal fin tvith two very short, slender, refractile ipines; second spine even shorter and slen- derer than first, attached to a pterygium :onsisting of a single element. Second iorsal with five segmented rays. First ray imbranched; last ray divided to its base, interior division branched, posterior divi- sion simple. Second dorsal fin pterygials 3ach consisting of a single element, with slender proximal and expanded distal por- tions. Anal fin with 14 or 15 elements, first element simple, short, and unsegmented, second long and segmented; third through penultimate elements branched, segmented rays; last element divided to base, both divisions simple. Form of anal fin pteryg- ials as in second dorsal fin, except for enlarged anterionnost pterygial, which is prolonged anteriorly in ventral midline for a distance equal to eye diameter in front of anal fin origin. Caudal skeleton (Fig. 11) with two hypurals, both fused to hypural centrum. No epineural or urostyle. Two slender epurals. Penultimate vertebra with well-developed haemal spine but neural spine reduced to expanded basal portion only. Neural and haemal spines of vertebrae preceding penultimate vertebra equally slender and elongate. No accessory haemal spine or separate slender element interposed between haemal spines of antepenultimate and penultimate vertebrae (such an element present in Dermogenijs, Onjzias, and Xenopoecihis: see Rosen, 1964, fig. 21). Caudal fin with 7 upper and 7 or 8 lower procurrent rays, and 7 upper and 7 lower principal rays, the outermost principal ray in each lobe unbranched. Posterior margins of hypurals straight
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