. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 198 CARL L. HUBBS. their course, along a line parallel with the scale margin (cf. par- ticularly Taylor, 1914) / The reason for the formation of this type of annulus is the fact that the circuli toward the end of each year's growth gradually become more strongly curved, whereas those marking the new growth are straighten This is the type of annulus formed on the scales of the Embiotocidse (see Fig. 4), (1913). FIG. 4. Lateral field of a scale from a three-year-old female of Amphigonop- tents aurora, showing the annuli. altho
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 198 CARL L. HUBBS. their course, along a line parallel with the scale margin (cf. par- ticularly Taylor, 1914) / The reason for the formation of this type of annulus is the fact that the circuli toward the end of each year's growth gradually become more strongly curved, whereas those marking the new growth are straighten This is the type of annulus formed on the scales of the Embiotocidse (see Fig. 4), (1913). FIG. 4. Lateral field of a scale from a three-year-old female of Amphigonop- tents aurora, showing the annuli. although an approximation of the circuli is also frequently evi- dent, especially on the basal and lateral fields. That the annuli on the scales of Amphigonopterus aurora are formed during the winter is evident from a consideration of the following facts. A series of young from New Monterey col- lected on October 26, and another lot from near Pillar Cali- fornia, obtained on November 25, show no trace of an annulus at the margin of their scales, and had not yet attained the com- puted length at which this mark had been formed in larger speci- mens. Excluding recently born young, the smallest examples of either sex among those taken near Piedras Blancas during the first week of June, and also the young specimens secured near Pillar Pt. on April I, have a single annulus on their scales, some dis- 1 The statement by Taylor that no approximation of the circuli occurs in the annuli is partially erroneous (particularly as it applies to salmonoid fishes), as is also his conclusion that the annuli of the fishes which he studied were formed during the summer (even Taylor's own data indicates the contrary).. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biolo
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
