. A biological survey of the Erie-Niagara system. Supplemental to Eighteenth annual report, 1928. Natural history -- New York (State); Fishes -- Erie, Lake; Fishes -- Niagara River (N. Y. and Ont. ); Erie, Lake; Niagara River (N. Y. and Ont. ). Biological Survey—Erie-Niagara Watershed 83 opaque from preservation but c. 20 rather large oil globules apparent, deep amber in color on the yellowish yolk. In a later stage with the embryo reaching more than once and a half around yolk and apparently ready to hatch, top of head heavily pigmented and dorsal and ventral brown stripes, characteristic of
. A biological survey of the Erie-Niagara system. Supplemental to Eighteenth annual report, 1928. Natural history -- New York (State); Fishes -- Erie, Lake; Fishes -- Niagara River (N. Y. and Ont. ); Erie, Lake; Niagara River (N. Y. and Ont. ). Biological Survey—Erie-Niagara Watershed 83 opaque from preservation but c. 20 rather large oil globules apparent, deep amber in color on the yellowish yolk. In a later stage with the embryo reaching more than once and a half around yolk and apparently ready to hatch, top of head heavily pigmented and dorsal and ventral brown stripes, characteristic of the newly hatched larva, prominent. Yolk sac still deep yellow, its anterior part filled with a large oil globule, and dark thickly distributed chromatophores making their appearance on the underside posteri- orly. ___ Eyes dark, and center of head behind eyes covered by a diamond-shaped patch of small chromatophores. Chromatophores continuing, small and stellate, to form the double dorsal series to end of body, with a similar ventral series behind the vent. Myomeres faintly discernible. • — nun. stage. Newly hatched. Much like following stage figured but yolk sac larger and body proportionately more slender. Pigment Fig. 7.—Leucichthys artedi, millimeters 10J5 mm. stage. Fig. 7. Age about 2 days. Total length mm; length to vent mm; greatest depth behind yolk sac mm; diameter of eye mm; myomeres, 38 to vent, 19 behind. Embryonic marginal fin complete, starting over seventeenth myomere, rising, then notching over twenty-ninth myomere, ris- ing again and notching at peduncle; ventrally starting beneath yolk sac, breaking completely at vent, and notching at peduncle; caudal lophocercal; pectorals large, rounded. Head very blunt, its highest point over posterior part of eye; mouth subinferior, jaws equal. Opaque white in color, differing from Coregonus clii- peaforniis in the restriction of yellow color to the yolk, whereas in the
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