. Text-book of embryology. Embryology. 508 INVEKTEBEATA CHAP. anterior end of the larva. No vacuolated crests of any kind are developed, but with this exception the subsequent development, up to the age of six days, is, point for point, identical with that ot OpUothrix. The separation of the coeloni from the archenteron, its division into two sacs, the formation of the madreporic pore, the formation of the stomodaeum, the differentiation of the gut, the formation of the adoral band of cilia, and of the longitudmal locomotor band of cilia, of the first four larval arms, and of their supporting
. Text-book of embryology. Embryology. 508 INVEKTEBEATA CHAP. anterior end of the larva. No vacuolated crests of any kind are developed, but with this exception the subsequent development, up to the age of six days, is, point for point, identical with that ot OpUothrix. The separation of the coeloni from the archenteron, its division into two sacs, the formation of the madreporic pore, the formation of the stomodaeum, the differentiation of the gut, the formation of the adoral band of cilia, and of the longitudmal locomotor band of cilia, of the first four larval arms, and of their supporting calcareous rods, take place in precisely the same way as in the Ophiopluteus larva and need not be specially detailed here. No wonder that the Eohinoid larva, when discovered by Johannes ®. coe pmes. 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 MacBride, E. W. (Ernest William), 1866-1940; Kerr, John Graham, 1869-; Heape, Walter, 1855-1929. London : Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, bookpubli, booksubjectembryology
