. Chimæroid fishes and their development. Fishes; Chimaeridae. THE EGG-CAPSULE. 41 Before describing the various stages of Chimsra {C. collici) a brief survey of the general plan of development might be given [cf. Biol. Bulletin, 1903, vol. iv, No. 5, pp. 270-286): The development is shark-like (figs. 24-29). In early stages a small germinal area is present. In this polyspermy occurs, then a cleavage, in which, however, surface furrows are retarded. The early gastrula suggests somewhat closely the condition in shark, or rather in ray, but the blastopore appears near instead of at the margin of
. Chimæroid fishes and their development. Fishes; Chimaeridae. THE EGG-CAPSULE. 41 Before describing the various stages of Chimsra {C. collici) a brief survey of the general plan of development might be given [cf. Biol. Bulletin, 1903, vol. iv, No. 5, pp. 270-286): The development is shark-like (figs. 24-29). In early stages a small germinal area is present. In this polyspermy occurs, then a cleavage, in which, however, surface furrows are retarded. The early gastrula suggests somewhat closely the condition in shark, or rather in ray, but the blastopore appears near instead of at the margin of the blastoderm. The embryo develops a long, delicate tail, external gills, and a head terminating in a conspicuous frontal "; It absorbs the yolk-. 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
