. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 438 Prof. A. Schneider on the Structure possess vanes, but in a totally different order. In Veretillum cynomoriam (fig. 3) eight septa are present, and these are differently constructed according to whether they stand upon the left or the right half of the body. In the one half the vanes are turned in the opposite direction to those in the other. How the calcareous lamellte of the corals constructed in accordance with the number 6 originate has not yet been investigated. Certa
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 438 Prof. A. Schneider on the Structure possess vanes, but in a totally different order. In Veretillum cynomoriam (fig. 3) eight septa are present, and these are differently constructed according to whether they stand upon the left or the right half of the body. In the one half the vanes are turned in the opposite direction to those in the other. How the calcareous lamellte of the corals constructed in accordance with the number 6 originate has not yet been investigated. Certainly they do not originate by the calcifi- cation of the septa themselves; but it is very probable that they are produced in the inner space of each pair of septa. When the number of lamella? does not exceed a certain limit { in Galaxea\ we may easily find individuals with only six lamella? of the first order, then older ones with six of tlie Fig. 2. Fig. ^<i^<. 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 London, Taylor and Francis, Ltd
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