. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 SISTER FRANCIS SOLANO GEISLER the head to the tip of the telson. The averages are seen in Figure 2. This graph shows that moults II, VI, and VII are larger in the females studied than in the males. However, general observations indicate that after attaining maturity the male grows at a faster rate than the female and as adult is characteristically larger 22 20 CO UJ £ u CD (/) 5 o z 14 10 8. 345 IN STARS 8 FIGURE 1. Time in days between moults measured for seven broods. than the adult female. This does not appear on the g
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 SISTER FRANCIS SOLANO GEISLER the head to the tip of the telson. The averages are seen in Figure 2. This graph shows that moults II, VI, and VII are larger in the females studied than in the males. However, general observations indicate that after attaining maturity the male grows at a faster rate than the female and as adult is characteristically larger 22 20 CO UJ £ u CD (/) 5 o z 14 10 8. 345 IN STARS 8 FIGURE 1. Time in days between moults measured for seven broods. than the adult female. This does not appear on the graph since detailed studies in this case did not go beyond the eighth instar. C. Grozvth of the antennae Newly-hatched Hyalellas have six joints in the first antenna. The three proxi- mal joints constitute the peduncle, and the distal three the flagellum. During the process of growth the number of peduncular joints remains constant while the flagellum develops four to six new joints. The actively growing region ("growth center") is the first proximal joint of the flagellum. Growth can readily be studied through the series of moults from any one animal. A number of series were studied. 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 Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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