. Chimæroid fishes and their development. Fishes; Chimaeridae. io6 CHIM^ROID FISHES AND THEIR DEVELOPMENT. The latest embryo in the writer's material, one of the specimens secured by Professor Wilbur, measured 51 mm. in length. Its age was said to be six months. (Plate IX, figs. 50 and 50" to ^) It is decidedly like the adult Chimsera, as can be seen from the figures; it has well-established snout (in which sensory grooves and pits appear), paired and unpaired fins, and clasping organs, show- ing that the present specimen was a male. On the other hand, two prominent embr^'onic characters
. Chimæroid fishes and their development. Fishes; Chimaeridae. io6 CHIM^ROID FISHES AND THEIR DEVELOPMENT. The latest embryo in the writer's material, one of the specimens secured by Professor Wilbur, measured 51 mm. in length. Its age was said to be six months. (Plate IX, figs. 50 and 50" to ^) It is decidedly like the adult Chimsera, as can be seen from the figures; it has well-established snout (in which sensory grooves and pits appear), paired and unpaired fins, and clasping organs, show- ing that the present specimen was a male. On the other hand, two prominent embr^'onic characters still appear, viz, the yolk-sac (which in the present specimen is preserved only in part) and the external gills, a tuft of which is seen protruding from below the opercular folds. The external gills are shown in plate IX, fig. 50*, ", ^ and ^. Their degree of differ- entiation is indicated in. 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 Dean, Bashford, 1867-1928. Washington, D. C. , Carnegie Institution of Washington
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectfishes, bookyear1906
