Synopses & Reviews
Synopsis
Excerpt from Transactions and Proceedings and Report of the Royal Society of South Australia, 1902, Vol. 26
Four species, distributed among the same number of genera, are discussed in this part. I am unable to place the first species described in any existing genus, and the following new one is instituted for its reception. It is perhaps nearest to Dasmia, Edw. and Haime, but is without the threefold division of the septa assigned to that genus; moreover, the cyclical arrangement is peculiar.
Genus Holcotrochus, nov.
Corallum free, compressed. Septa ten, in one cycle, and abnormal in development.
Costse corresponding to septa, broad, equal, and separated by deep grooves. Columella parietal. No epitheca.
Holcotrochus Scriptus, spec. nov. Pl. i., figs. la, b.
Corallum cuneiform, with roundly-pointed base. Calice elliptical, the ratio of its major and minor axes being as 100 to 57.
The costae form the most marked feature of this curious coral. Only ten are present, and they are equal in size, very prominent, broad at the top, and regularly tapering at the base, where they unite. Of these ten there is one at either end, and four on each of the broad surfaces of the corallum. All are ornamented laterally by a regular series of closely-set incisions or scribed markings at right angles to their length. A slender and somewhat sinuous rod-like process, mostly granular, but occasionally plain, in each of the deeply-grooved interspaces, extends from the calicular margin to the base, and serves to connect adjoining costae. The costae themselves and these slender rods form in fact the only wall of the corallum.
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Synopsis
Excerpt from Transactions and Proceedings and Report of the Royal Society of South Australia, 1902, Vol. 26
There are two kinds of pali, viz., six short depressed ones before the primaries, and twelve others, which are both longer and higher, before the tertiaries. Each pair of the latter curve inwards and almost meet in front of the enclosed secondary septum. Lower down they are fused with this close to the columella. Superiorly, a deep groove or notch separates the pali and septa, but inferiorly they are connected.
About the Publisher
Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.