. Catalogue of the madreporarian corals in the British Museum (Natural History). Scleractinia. PORITES. 19 but because at those points there are, or may be, trabecular thickenings of the tissue. The Diagrams B to H, fig. 3, which give some of the patterns assumed by the palic ring, show cases of single septa developing pali, while, again, other cases are seen (F, G, H) showing septa developing no pali. The difference in these cases seems to be due to the fact that these septa. Fig. 3.— Diagrams to illustrate some of the palie formulae referred to in the descriptions of the forms. A is an ideal
. Catalogue of the madreporarian corals in the British Museum (Natural History). Scleractinia. PORITES. 19 but because at those points there are, or may be, trabecular thickenings of the tissue. The Diagrams B to H, fig. 3, which give some of the patterns assumed by the palic ring, show cases of single septa developing pali, while, again, other cases are seen (F, G, H) showing septa developing no pali. The difference in these cases seems to be due to the fact that these septa. Fig. 3.— Diagrams to illustrate some of the palie formulae referred to in the descriptions of the forms. A is an ideal calicle, showing twelve septa, with primary and secondary cycles. This (see text, pp. 18, 20) is, however, probably never seen in Pmites, the appearances suggesting it being secondary, and due to the fact that the intra-calicular trabeculae do not grow as fast as the wall trabeculee, and the calicle is consequently deep. In E septal granules are indicated to show how it is possible for them to take part in the formation of the palic ring, which they sometimes seem to do. In G we see the trident formation mentioned here and there in the descriptions, the ventral directive being joined by a radial strand to the central tubercle and to the two lateral septal granules by synapticulse. do not yet project far enough, the trabeculse of their inner edges having lagged behind and not risen to the surface, while in B, C, D the inner trabeculse of the same septa rise up as pali to D 2. 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 British Museum (Natural History). Dept. of Zoology; Brook, G. L. (George Leslie), 1910-; Bernard, Henry Meyners; Matthai, G. London, Printed by order of the Trustees of the British Museum
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