. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1/2 CASWELL GRAVE. thus differing widely from the small transparent eggs of Synapta digitata. The efficient locomotor and feeding apparatuses with which the larva' of the latter species is provided, enabling it to care for itself, are not needed by the larva of Cucumaria doliolum for whose care provision has already been made. The larva of Cucumaria can, as it were, give its whole attention to the pro- duction of a creature with the structure of the adult while the larva of Synapta must make this secondary to food getting. C
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1/2 CASWELL GRAVE. thus differing widely from the small transparent eggs of Synapta digitata. The efficient locomotor and feeding apparatuses with which the larva' of the latter species is provided, enabling it to care for itself, are not needed by the larva of Cucumaria doliolum for whose care provision has already been made. The larva of Cucumaria can, as it were, give its whole attention to the pro- duction of a creature with the structure of the adult while the larva of Synapta must make this secondary to food getting. Crinoids. In Antedon rosacea, the only species of crinoid the develop- ment of which has been studied, the eggs are supplied with con- siderable yolk and for a time the developing larvse are X" FlG. 4. Larva of Antedon rosacea. After Seeliger. Internal organs shown in posterior end. I, 2, 3, 4 and 5, ciliated rings. The free-swimming period is of short duration and the develop- ment is more or less direct. The larva is elongated and cylin- drical and is encircled by five transverse ciliated rings. An. 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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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
